Merge branch 'Benutzeroberflaeche' of bauseweinfr74630/mMDT5_GreenWatch into master

app/src/main/AndroidManifest.xml

@@ -3,7 +3,14 @@
     package="com.example.greenwatch">
 
     <uses-permission android:name="android.permission.INTERNET" />
-    <uses-permission android:name="android.permission.CAMERA"/>
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.READ_MEDIA_AUDIO" />
+    <uses-permission android:name="android.permission.READ_MEDIA_VIDEO" />
+    <uses-permission android:name="android.permission.RECORD_AUDIO" />
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.CAMERA" />
+    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
+    <uses-permission android:name="android.permission.CHANGE_WIFI_MULTICAST_STATE" />
 
     <uses-feature android:name="android.hardware.camera"/>
 

app/src/main/java/com/example/greenwatch/AccelerometerActivity.java

@@ -11,6 +11,7 @@ import android.hardware.SensorEvent;
 import android.hardware.SensorEventListener;
 import android.hardware.SensorManager;
 import android.os.Bundle;
+import android.view.SurfaceView;
 import android.view.View;
 import android.widget.Button;
 import android.widget.TextView;
@@ -27,20 +28,25 @@ public class AccelerometerActivity extends AppCompatActivity implements SensorEv
 
     private SensorManager accelerometerManager;
     private Sensor accelerometerSensor;
+    private SurfaceView surfaceView;
     private TextView accelerometerStatusMessage;
     private TextView accelerometerDataTV;
-    private TextView accelerometerWarningTV;
+    private TextView tvAccelerometerdeviceListRecyclerView;
+    private TextView tvAccelerometeralarmHistoryListRecyclerView;
     private Button backToMainActivityButton;
     private AccelerometerViewModel mAccelerometerViewModel;
+    private Permission permission = new Permission();
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_accelerometer);
 
+        surfaceView = (SurfaceView) findViewById(R.id.surfaceViewAccelerometer);
         accelerometerStatusMessage = (TextView) findViewById(R.id.tvAccelerometerStatusmessage);
         accelerometerDataTV = (TextView) findViewById(R.id.tvAccelerometerData);
-        accelerometerWarningTV = (TextView) findViewById(R.id.tvAccelerometerWarning);
+        tvAccelerometerdeviceListRecyclerView = (TextView) findViewById(R.id.tvAccelerometerdeviceListRecyclerView);
+        tvAccelerometeralarmHistoryListRecyclerView = (TextView) findViewById(R.id.tvAccelerometeralarmHistoryListRecyclerView);
         backToMainActivityButton = (Button) findViewById(R.id.accelerometerBackToMainActivity);
 
         RecyclerView recyclerView = findViewById(R.id.deviceListRecyclerView);
@@ -65,7 +71,7 @@ public class AccelerometerActivity extends AppCompatActivity implements SensorEv
         });
 
         mAccelerometerViewModel = new ViewModelProvider(this).get(AccelerometerViewModel.class);
-        mAccelerometerViewModel.init();
+        mAccelerometerViewModel.init(surfaceView.getHolder());
         mAccelerometerViewModel.getConnectedDeviceList().observe(this, new Observer<List<Device>>() {
             @Override
             public void onChanged(List<Device> devices) {
@@ -84,22 +90,39 @@ public class AccelerometerActivity extends AppCompatActivity implements SensorEv
             @Override
             public void onChanged(Boolean aBoolean) {
                 if (aBoolean) {
-                    Toast.makeText(AccelerometerActivity.this, "Start Alarm Recording", Toast.LENGTH_LONG).show();
+                    if(permission.alarmRechtePruefen(AccelerometerActivity.this, AccelerometerActivity.this)){
+                        Toast.makeText(AccelerometerActivity.this, "Start Alarm Recording", Toast.LENGTH_LONG).show();
+                        mAccelerometerViewModel.startAlarmRecording();
+                        //todo AlarmHandling einfügen
+                    }
+                    else {
+                        permission.alarmRechteAnfordern(AccelerometerActivity.this);
+                        if(permission.alarmRechtePruefen(AccelerometerActivity.this, AccelerometerActivity.this)){
+                            Toast.makeText(AccelerometerActivity.this, "Start Alarm Recording", Toast.LENGTH_LONG).show();
+                            mAccelerometerViewModel.startAlarmRecording();
+                            //todo Alarmhandling einfügen
+                        }
+                        else {
+                            Toast.makeText(AccelerometerActivity.this, "Stop Alarm Recording", Toast.LENGTH_LONG).show();
+                            mAccelerometerViewModel.stopAlarmRecording(AccelerometerActivity.this);
+                        }
+                    }
                 }
                 else {
+                    mAccelerometerViewModel.stopAlarmRecording(AccelerometerActivity.this);
                     Toast.makeText(AccelerometerActivity.this, "Stop Alarm Recording", Toast.LENGTH_LONG).show();
                 }
             }
         });
 
-        mAccelerometerViewModel.getMovementDetectedValue().observe(this, new Observer<Boolean>() {
+        mAccelerometerViewModel.getAccelerometerAlarmDetected().observe(this, new Observer<Boolean>() {
             @Override
             public void onChanged(Boolean aBoolean) {
                 if (aBoolean) {
-                    mAccelerometerViewModel.updateDevice(mAccelerometerViewModel.getLocalDeviceUUID(), mAccelerometerViewModel.getSystemTimeStamp(), true, "Accelerometer", 10);
+                    mAccelerometerViewModel.updateDevice(mAccelerometerViewModel.getLocalDeviceUUID(), mAccelerometerViewModel.getSystemTimeStamp(), true, "Accelerometer", mAccelerometerViewModel.getAccelerometerSensorMeanValue());
                 }
                 else {
-                    mAccelerometerViewModel.updateDevice(mAccelerometerViewModel.getLocalDeviceUUID(), mAccelerometerViewModel.getSystemTimeStamp(), false, "Accelerometer", 0);
+                    mAccelerometerViewModel.updateDevice(mAccelerometerViewModel.getLocalDeviceUUID(), mAccelerometerViewModel.getSystemTimeStamp(), false, "Accelerometer", 0.0f);
                 }
 
             }

app/src/main/java/com/example/greenwatch/AudiodetectionActivity.java

@@ -1,27 +1,135 @@
 package com.example.greenwatch;
 
 import androidx.appcompat.app.AppCompatActivity;
+import androidx.lifecycle.Observer;
+import androidx.lifecycle.ViewModelProvider;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
 
 import android.os.Bundle;
+import android.view.SurfaceView;
 import android.view.View;
 import android.widget.Button;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import com.example.greenwatch.adapters.AlarmHistoryListAdapter;
+import com.example.greenwatch.adapters.DeviceListAdapter;
+import com.example.greenwatch.models.Device;
+import com.example.greenwatch.viewmodels.MicrofonViewModel;
+
+import java.util.List;
 
 public class AudiodetectionActivity extends AppCompatActivity {
-
+    private TextView microfonStatusMessage;
+    private TextView tvAAudiodetectionAlarmHistoryListRecyclerView;
+    private TextView tvAudiodetectionDeviceListRecyclerView;
     private Button backToMainActivityButton;
+    private SurfaceView surfaceView;
+    private Permission permission = new Permission();
+    private MicrofonViewModel mMicrofonViewModel;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_audiodetection);
 
+        surfaceView = (SurfaceView) findViewById(R.id.surfaceViewAudio);
+        microfonStatusMessage = (TextView) findViewById(R.id.tvAudiodetectionStatusmessage);
+        tvAAudiodetectionAlarmHistoryListRecyclerView = (TextView) findViewById(R.id.tvAudiodetectionAlarmHistoryListRecyclerView);
+        tvAudiodetectionDeviceListRecyclerView = (TextView) findViewById(R.id.tvAudiodetectionDeviceListRecyclerView);
         backToMainActivityButton = (Button) findViewById(R.id.audiodetectorBackToMainActivity);
 
+        RecyclerView recyclerView = findViewById(R.id.deviceListRecyclerView);
+        recyclerView.setLayoutManager(new LinearLayoutManager(this));
+        recyclerView.setHasFixedSize(true);
+
+        final DeviceListAdapter deviceListAdapter = new DeviceListAdapter();
+        recyclerView.setAdapter(deviceListAdapter);
+
+        RecyclerView alarmHistoryListRecyclerView = findViewById(R.id.alarmHistoryListRecyclerView);
+        alarmHistoryListRecyclerView.setLayoutManager(new LinearLayoutManager(this));
+        alarmHistoryListRecyclerView.setHasFixedSize(true);
+
+        final AlarmHistoryListAdapter alarmHistoryListAdapter  = new AlarmHistoryListAdapter();
+        alarmHistoryListRecyclerView.setAdapter(alarmHistoryListAdapter);
+
         backToMainActivityButton.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
                 finish();
             }
         });
+
+        mMicrofonViewModel = new ViewModelProvider(this).get(MicrofonViewModel.class);
+        mMicrofonViewModel.init(surfaceView.getHolder());
+        mMicrofonViewModel.getConnectedDeviceList().observe(this, new Observer<List<Device>>() {
+            @Override
+            public void onChanged(List<Device> devices) {
+                deviceListAdapter.setDevices(devices);
+            }
+        });
+
+        mMicrofonViewModel.getAlarmHistoryList().observe(this, new Observer<List<Device>>() {
+            @Override
+            public void onChanged(List<Device> devices) {
+                alarmHistoryListAdapter.setAlarmHistoryList(devices);
+            }
+        });
+
+        mMicrofonViewModel.getStartAlarmRecording().observe(this, new Observer<Boolean>() {
+            @Override
+            public void onChanged(Boolean aBoolean) {
+                if (aBoolean) {
+                    if(permission.alarmRechtePruefen(AudiodetectionActivity.this, AudiodetectionActivity.this)){
+                        Toast.makeText(AudiodetectionActivity.this, "Start Alarm Recording", Toast.LENGTH_LONG).show();
+                        mMicrofonViewModel.startAlarmRecording();
+                        //todo AlarmHandling einfügen
+                    } else {
+                        permission.alarmRechteAnfordern(AudiodetectionActivity.this);
+                        if(permission.alarmRechtePruefen(AudiodetectionActivity.this, AudiodetectionActivity.this)){
+                            Toast.makeText(AudiodetectionActivity.this, "Start Alarm Recording", Toast.LENGTH_LONG).show();
+                            mMicrofonViewModel.startAlarmRecording();
+                            //todo Alarmhandling einfügen
+                        } else {
+                            Toast.makeText(AudiodetectionActivity.this, "Stop Alarm Recording", Toast.LENGTH_LONG).show();
+                            mMicrofonViewModel.stopAlarmRecording(AudiodetectionActivity.this);
+                        }
+                    }
+                }
+                else {
+                    Toast.makeText(AudiodetectionActivity.this, "Stop Alarm Recording", Toast.LENGTH_LONG).show();
+                    mMicrofonViewModel.stopAlarmRecording(AudiodetectionActivity.this);
+                }
+            }
+        });
+
+        mMicrofonViewModel.getMicrofonAlarmDetected().observe(this, new Observer<Boolean>() {
+            @Override
+            public void onChanged(Boolean aBoolean) {
+                if (aBoolean) {
+                    mMicrofonViewModel.updateDevice(mMicrofonViewModel.getLocalDeviceUUID(), mMicrofonViewModel.getSystemTimeStamp(), true, "Audio", mMicrofonViewModel.getAmplitudeInDB());
+                }
+                else {
+                    mMicrofonViewModel.updateDevice(mMicrofonViewModel.getLocalDeviceUUID(), mMicrofonViewModel.getSystemTimeStamp(), false, "Audio", 0.0f);
+                }
+
+            }
+        });
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+        mMicrofonViewModel.startMicrofonSensor();
+    }
+
+    @Override
+    protected void onPause() {
+        super.onPause();
+        if (isFinishing()){
+            mMicrofonViewModel.recalibrationMicrofonSensor();
+        }
+        mMicrofonViewModel.stopMicrofonSensor();
     }
 }

app/src/main/java/com/example/greenwatch/AudiodetectionAndAccelerometerActivity.java

@@ -1,27 +1,192 @@
 package com.example.greenwatch;
 
 import androidx.appcompat.app.AppCompatActivity;
+import androidx.lifecycle.Observer;
+import androidx.lifecycle.ViewModelProvider;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
 
+import android.hardware.Sensor;
+import android.hardware.SensorEvent;
+import android.hardware.SensorEventListener;
+import android.hardware.SensorManager;
 import android.os.Bundle;
+import android.view.SurfaceView;
 import android.view.View;
 import android.widget.Button;
+import android.widget.TextView;
+import android.widget.Toast;
 
-public class AudiodetectionAndAccelerometerActivity extends AppCompatActivity {
+import com.example.greenwatch.adapters.AlarmHistoryListAdapter;
+import com.example.greenwatch.adapters.DeviceListAdapter;
+import com.example.greenwatch.models.Device;
+import com.example.greenwatch.viewmodels.AudiodetectionAndAccelerometerViewModel;
 
+import java.util.List;
+
+public class AudiodetectionAndAccelerometerActivity extends AppCompatActivity implements SensorEventListener {
+    private SensorManager accelerometerManager;
+    private Sensor accelerometerSensor;
+    private SurfaceView surfaceView;
+    private TextView audiodetectionAndAccelerometerStatusMessage;
+    private TextView tvAudiodetectionAndAccelerometerDeviceListRecyclerView;
+    private TextView tvAudiodetectionAndAccelerometerAlarmHistoryListRecyclerView;
+    private AudiodetectionAndAccelerometerViewModel mAudiodetectionAndAccelerometerViewModel;
     private Button backToMainActivity;
 
+    private Permission permission = new Permission();
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_audiodetection_and_accelerometer);
 
+        surfaceView = (SurfaceView) findViewById(R.id.surfaceViewAudiodetectionAndAccelerometer);
+        audiodetectionAndAccelerometerStatusMessage = (TextView) findViewById(R.id.tvAudiodetectionAndAccelerometerStatusmessage);
+        tvAudiodetectionAndAccelerometerDeviceListRecyclerView = (TextView) findViewById(R.id.tvAudiodetectionAndAccelerometerDeviceListRecyclerView);
+        tvAudiodetectionAndAccelerometerAlarmHistoryListRecyclerView = (TextView) findViewById(R.id.tvAudiodetectionAndAccelerometerAlarmHistoryListRecyclerView);
         backToMainActivity = (Button) findViewById(R.id.audiodetectionAndAccelerometerBackToMainActivity);
 
+        RecyclerView recyclerView = findViewById(R.id.deviceListRecyclerView);
+        recyclerView.setLayoutManager(new LinearLayoutManager(this));
+        recyclerView.setHasFixedSize(true);
+
+        final DeviceListAdapter deviceListAdapter = new DeviceListAdapter();
+        recyclerView.setAdapter(deviceListAdapter);
+
+        RecyclerView alarmHistoryListRecyclerView = findViewById(R.id.alarmHistoryListRecyclerView);
+        alarmHistoryListRecyclerView.setLayoutManager(new LinearLayoutManager(this));
+        alarmHistoryListRecyclerView.setHasFixedSize(true);
+
+        final AlarmHistoryListAdapter alarmHistoryListAdapter  = new AlarmHistoryListAdapter();
+        alarmHistoryListRecyclerView.setAdapter(alarmHistoryListAdapter);
+
         backToMainActivity.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
                 finish();
             }
         });
+
+        mAudiodetectionAndAccelerometerViewModel = new ViewModelProvider(this).get(AudiodetectionAndAccelerometerViewModel.class);
+        mAudiodetectionAndAccelerometerViewModel.init(surfaceView.getHolder());
+        mAudiodetectionAndAccelerometerViewModel.getConnectedDeviceList().observe(this, new Observer<List<Device>>() {
+            @Override
+            public void onChanged(List<Device> devices) {
+                deviceListAdapter.setDevices(devices);
+            }
+        });
+
+        mAudiodetectionAndAccelerometerViewModel.getAlarmHistoryList().observe(this, new Observer<List<Device>>() {
+            @Override
+            public void onChanged(List<Device> devices) {
+                alarmHistoryListAdapter.setAlarmHistoryList(devices);
+            }
+        });
+
+        mAudiodetectionAndAccelerometerViewModel.getStartAlarmRecording().observe(this, new Observer<Boolean>() {
+            @Override
+            public void onChanged(Boolean aBoolean) {
+                if (aBoolean) {
+                    if(permission.alarmRechtePruefen(AudiodetectionAndAccelerometerActivity.this, AudiodetectionAndAccelerometerActivity.this)){
+                        Toast.makeText(AudiodetectionAndAccelerometerActivity.this, "Start Alarm Recording", Toast.LENGTH_LONG).show();
+                        mAudiodetectionAndAccelerometerViewModel.startAlarmRecording();
+                        //todo AlarmHandling einfügen
+                    } else {
+                        permission.alarmRechteAnfordern(AudiodetectionAndAccelerometerActivity.this);
+                        if(permission.alarmRechtePruefen(AudiodetectionAndAccelerometerActivity.this, AudiodetectionAndAccelerometerActivity.this)){
+                            Toast.makeText(AudiodetectionAndAccelerometerActivity.this, "Start Alarm Recording", Toast.LENGTH_LONG).show();
+                            mAudiodetectionAndAccelerometerViewModel.startAlarmRecording();
+                            //todo Alarmhandling einfügen
+                        } else {
+                            Toast.makeText(AudiodetectionAndAccelerometerActivity.this, "Stop Alarm Recording", Toast.LENGTH_LONG).show();
+                            mAudiodetectionAndAccelerometerViewModel.stopAlarmRecording(AudiodetectionAndAccelerometerActivity.this);
+                        }
+                    }
+                }
+                else {
+                    Toast.makeText(AudiodetectionAndAccelerometerActivity.this, "Stop Alarm Recording", Toast.LENGTH_LONG).show();
+                    mAudiodetectionAndAccelerometerViewModel.stopAlarmRecording(AudiodetectionAndAccelerometerActivity.this);
+                }
+            }
+        });
+
+        mAudiodetectionAndAccelerometerViewModel.getAudiodetectionAndAccelerometerAlarmDetected().observe(this, new Observer<Boolean>() {
+            @Override
+            public void onChanged(Boolean aBoolean) {
+                if (aBoolean) {
+                    Toast.makeText(AudiodetectionAndAccelerometerActivity.this, "onChangedTrue", Toast.LENGTH_LONG).show();
+                    if (mAudiodetectionAndAccelerometerViewModel.getAccelerometerAlarmDetected() && !mAudiodetectionAndAccelerometerViewModel.getMicrofonAlarmDetected()) {
+                        mAudiodetectionAndAccelerometerViewModel.updateDevice(mAudiodetectionAndAccelerometerViewModel.getLocalDeviceUUID(), mAudiodetectionAndAccelerometerViewModel.getSystemTimeStamp(), true, "Accelerometer", mAudiodetectionAndAccelerometerViewModel.getAccelerometerSensorMeanValue());
+                    }
+                    else if (mAudiodetectionAndAccelerometerViewModel.getMicrofonAlarmDetected() && !mAudiodetectionAndAccelerometerViewModel.getAccelerometerAlarmDetected()) {
+                        mAudiodetectionAndAccelerometerViewModel.updateDevice(mAudiodetectionAndAccelerometerViewModel.getLocalDeviceUUID(), mAudiodetectionAndAccelerometerViewModel.getSystemTimeStamp(), true, "Audio", mAudiodetectionAndAccelerometerViewModel.getAmplitudeInDB());
+                    }
+                    else if (mAudiodetectionAndAccelerometerViewModel.getMicrofonAlarmDetected() && mAudiodetectionAndAccelerometerViewModel.getAccelerometerAlarmDetected()) {
+                        mAudiodetectionAndAccelerometerViewModel.updateDevice(mAudiodetectionAndAccelerometerViewModel.getLocalDeviceUUID(), mAudiodetectionAndAccelerometerViewModel.getSystemTimeStamp(), true, "AudioAndAccelerometer", mAudiodetectionAndAccelerometerViewModel.getAmplitudeInDB());
+                    }
+                }
+                else {
+                    Toast.makeText(AudiodetectionAndAccelerometerActivity.this, "onChangedFalse", Toast.LENGTH_LONG).show();
+                    mAudiodetectionAndAccelerometerViewModel.updateDevice(mAudiodetectionAndAccelerometerViewModel.getLocalDeviceUUID(), mAudiodetectionAndAccelerometerViewModel.getSystemTimeStamp(), false, "AudioAndAccelerometer", 0.0f);
+                }
+
+            }
+        });
+
+        accelerometerManager = (SensorManager) getSystemService(SENSOR_SERVICE);
+        if (accelerometerManager.getSensorList(Sensor.TYPE_GYROSCOPE).size() == 0) {
+            accelerometerSensor = null;
+            Toast.makeText(AudiodetectionAndAccelerometerActivity.this, "No accelerometer sensor available", Toast.LENGTH_LONG).show();
+        }
+        else {
+            accelerometerSensor = accelerometerManager.getSensorList(Sensor.TYPE_GYROSCOPE).get(0);
+        }
+    }
+
+    @Override
+    public void onSensorChanged(SensorEvent event) {
+        StringBuilder sb = new StringBuilder();
+        sb.append("x=")
+                .append(event.values[0])
+                .append("\ny=")
+                .append(event.values[1])
+                .append("\nz=")
+                .append(event.values[2]);
+        audiodetectionAndAccelerometerStatusMessage.setText(sb.toString());
+        mAudiodetectionAndAccelerometerViewModel.addValueToGesamtBE(event.values[0] + event.values[1] + event.values[2]);
+        mAudiodetectionAndAccelerometerViewModel.meanValueCalculation();
+        mAudiodetectionAndAccelerometerViewModel.calibrateAccelerometerSensor();
+        mAudiodetectionAndAccelerometerViewModel.checkAlarmCondition();
+    }
+
+    @Override
+    public void onAccuracyChanged(Sensor sensor, int accuracy) {
+
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+        mAudiodetectionAndAccelerometerViewModel.startMicrofonSensor();
+        if (accelerometerSensor != null) {
+            if (accelerometerManager.registerListener(this, accelerometerSensor, SensorManager.SENSOR_DELAY_GAME)) {
+                Toast.makeText(AudiodetectionAndAccelerometerActivity.this, "We registered to the sensor", Toast.LENGTH_LONG).show();
+            } else {
+                Toast.makeText(AudiodetectionAndAccelerometerActivity.this, "Registration did not work", Toast.LENGTH_LONG).show();
+            }
+        }
+    }
+
+    @Override
+    protected void onPause() {
+        super.onPause();
+        if (isFinishing()){
+            mAudiodetectionAndAccelerometerViewModel.recalibrationMicrofonSensor();
+        }
+        mAudiodetectionAndAccelerometerViewModel.stopMicrofonSensor();
+        if (accelerometerSensor != null) {
+            accelerometerManager.unregisterListener(this, accelerometerSensor);
+        }
     }
 }

app/src/main/java/com/example/greenwatch/MainActivity.java

@@ -6,10 +6,14 @@ import androidx.lifecycle.ViewModelProvider;
 import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
 
+import android.app.Activity;
+import android.content.Context;
 import android.content.Intent;
 import android.os.Bundle;
+import android.view.SurfaceView;
 import android.view.View;
 import android.widget.Button;
+import android.widget.TextView;
 import android.widget.Toast;
 
 import com.example.greenwatch.adapters.AlarmHistoryListAdapter;
@@ -26,20 +30,31 @@ public class MainActivity extends AppCompatActivity {
     private Button accelerometerButton;
     private Button audiodetectionAndAccelerometerButton;
     private Button videodetectionAndAccelerometerButton;
-    private Button connectionButton;
+    private TextView tvMainActivityDeviceListRecyclerView;
+    private TextView tvMainActivityAlarmHistoryListRecyclerView;
+    private SurfaceView surfaceView;
     private MainActivityViewModel mMainActivityViewModel;
+    private Permission permission = new Permission();
+
+    private Activity activity = new Activity();
+    private Context context;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
 
+        activity = MainActivity.this;
+        context = MainActivity.this;
+
+        surfaceView = (SurfaceView) findViewById(R.id.surfaceViewMainActivity);
+        tvMainActivityDeviceListRecyclerView = (TextView) findViewById(R.id.tvMainActivityDeviceListRecyclerView);
+        tvMainActivityAlarmHistoryListRecyclerView = (TextView) findViewById(R.id.tvMainActivityAlarmHistoryListRecyclerView);
         audiodetectionButton = (Button) findViewById(R.id.audiodetectionButton);
         videodetectionButton = (Button) findViewById(R.id.videodetectionButton);
         accelerometerButton = (Button) findViewById(R.id.accelerometerButton);
         audiodetectionAndAccelerometerButton = (Button) findViewById(R.id.audiodetectionAndAccelerometerButton);
         videodetectionAndAccelerometerButton = (Button) findViewById(R.id.videodetectionAndAccelerometerButton);
-        connectionButton = (Button) findViewById(R.id.connectionButton);
 
         RecyclerView deviceListRecyclerView = findViewById(R.id.deviceListRecyclerView);
         deviceListRecyclerView.setLayoutManager(new LinearLayoutManager(this));
@@ -55,9 +70,11 @@ public class MainActivity extends AppCompatActivity {
         final AlarmHistoryListAdapter alarmHistoryListAdapter  = new AlarmHistoryListAdapter();
         alarmHistoryListRecyclerView.setAdapter(alarmHistoryListAdapter);
 
+        permission.startRechtePruefen(this, this);
+
         mMainActivityViewModel = new ViewModelProvider(this).get(MainActivityViewModel.class);
-        mMainActivityViewModel.init();
+        mMainActivityViewModel.init(surfaceView.getHolder());
-        mMainActivityViewModel.accessRequestCamera(this);
+
         mMainActivityViewModel.getConnectedDeviceList().observe(this, new Observer<List<Device>>() {
             @Override
             public void onChanged(List<Device> devices) {
@@ -76,7 +93,21 @@ public class MainActivity extends AppCompatActivity {
             @Override
             public void onChanged(Boolean aBoolean) {
                 if (aBoolean) {
-                    Toast.makeText(MainActivity.this, "Start Alarm Recording", Toast.LENGTH_LONG).show();
+                    if(permission.alarmRechtePruefen(context, activity)){
+                        Toast.makeText(MainActivity.this, "Start Alarm Recording", Toast.LENGTH_LONG).show();
+                        mMainActivityViewModel.startAlarmRecording();
+                        //todo AlarmHandling einfügen
+                    } else {
+                        permission.alarmRechteAnfordern(activity);
+                        if(permission.alarmRechtePruefen(context, activity)){
+                            Toast.makeText(MainActivity.this, "Start Alarm Recording", Toast.LENGTH_LONG).show();
+                            mMainActivityViewModel.startAlarmRecording();
+                            //todo Alarmhandling einfügen
+                        } else {
+                            Toast.makeText(MainActivity.this, "Stop Alarm Recording", Toast.LENGTH_LONG).show();
+                            mMainActivityViewModel.stopAlarmRecording(MainActivity.this);
+                        }
+                    }
                 }
                 else {
                     Toast.makeText(MainActivity.this, "Stop Alarm Recording", Toast.LENGTH_LONG).show();
@@ -87,18 +118,23 @@ public class MainActivity extends AppCompatActivity {
         audiodetectionButton.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
-                //openAudiodetectionActivity();
+
-                mMainActivityViewModel.updateDevice(mMainActivityViewModel.getLocalDeviceUUID(), "10:51",  false, "Audio", 10);
+                if (permission.microRechtePruefen(context, activity)) {
+                    openAudiodetectionActivity();
+                }
+                else {
+                    permission.microRechteAnfordern(activity);
+                }
             }
         });
         videodetectionButton.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
-                if (mMainActivityViewModel.isCameraAccessAllowed(MainActivity.this)) {
+                if (permission.kameraRechtePruefen(context, activity)) {
                     openVideodetectionActivity();
                 }
                 else {
-                    mMainActivityViewModel.accessRequestCamera(MainActivity.this);
+                    permission.kameraRechteAnfordern(activity);
                 }
             }
         });
@@ -112,49 +148,61 @@ public class MainActivity extends AppCompatActivity {
         audiodetectionAndAccelerometerButton.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
-                //openAudiodetectionAndAccelerometerActivity();
+                if (permission.microRechtePruefen(context, activity)) {
-                mMainActivityViewModel.setSensorType(mMainActivityViewModel.getLocalDeviceUUID(), "AudiodetectionAndAccelerometer");
+                    openAudiodetectionAndAccelerometerActivity();
-                mMainActivityViewModel.setTimeStamp(mMainActivityViewModel.getLocalDeviceUUID(), "00:00");
+                }
-                mMainActivityViewModel.setDeviceID(mMainActivityViewModel.getLocalDeviceUUID(), "6789");
+                else {
+                    permission.microRechteAnfordern(activity);
+                }
             }
         });
         videodetectionAndAccelerometerButton.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
-                openVideodetectionAndAccelerometerActivity();
+                if (permission.kameraRechtePruefen(context, activity)) {
-            }
+                    openVideodetectionAndAccelerometerActivity();
-        });
+                }
-        connectionButton.setOnClickListener(new View.OnClickListener() {
+                else {
-            @Override
+                    permission.kameraRechteAnfordern(activity);
-            public void onClick(View v) {
+                }
-                openConnectionActivity();
             }
         });
     }
-    public void openAudiodetectionActivity(){
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+        mMainActivityViewModel.updateDevice(mMainActivityViewModel.getLocalDeviceUUID(), mMainActivityViewModel.getSystemTimeStamp(),  false, "No Sensor selected", 0.0f);
+    }
+
+    public void openAudiodetectionActivity() {
+        mMainActivityViewModel.updateDevice(mMainActivityViewModel.getLocalDeviceUUID(), mMainActivityViewModel.getSystemTimeStamp(),  false, "Audio", 0.0f);
         Intent intent = new Intent(this, AudiodetectionActivity.class);
         startActivity(intent);
     }
-    public void openVideodetectionActivity(){
+    public void openVideodetectionActivity() {
+        mMainActivityViewModel.updateDevice(mMainActivityViewModel.getLocalDeviceUUID(), mMainActivityViewModel.getSystemTimeStamp(),  false, "Video", 0.0f);
         Intent intent =  new Intent(this, VideodetectionActivity.class);
         startActivity(intent);
     }
-    public void openAccelerometerActivity(){
+    public void openAccelerometerActivity() {
+        mMainActivityViewModel.updateDevice(mMainActivityViewModel.getLocalDeviceUUID(), mMainActivityViewModel.getSystemTimeStamp(),  false, "Accelerometer", 0.0f);
         Intent intent = new Intent(this, AccelerometerActivity.class);
         startActivity(intent);
     }
-    public void openAudiodetectionAndAccelerometerActivity(){
+    public void openAudiodetectionAndAccelerometerActivity() {
+        mMainActivityViewModel.updateDevice(mMainActivityViewModel.getLocalDeviceUUID(), mMainActivityViewModel.getSystemTimeStamp(),  false, "AudioAndAccelerometer", 0.0f);
         Intent intent = new Intent(this, AudiodetectionAndAccelerometerActivity.class);
         startActivity(intent);
     }
-    public void openVideodetectionAndAccelerometerActivity(){
+    public void openVideodetectionAndAccelerometerActivity() {
+        mMainActivityViewModel.updateDevice(mMainActivityViewModel.getLocalDeviceUUID(), mMainActivityViewModel.getSystemTimeStamp(),  false, "VideoAndAccelerometer", 0.0f);
         Intent intent = new Intent(this, VideodetectionAndAccelerometerActivity.class);
         startActivity(intent);
     }
-    public void openConnectionActivity(){
-        //Intent intent = new Intent(this, ConnectionActivity.class);
-        //startActivity(intent);
-        mMainActivityViewModel.updateDevice(mMainActivityViewModel.getLocalDeviceUUID(), "10:51",  true, "Audio", 10);
-    }
 
+    @Override
+    protected void onPause() {
+        super.onPause();
+    }
 }

app/src/main/java/com/example/greenwatch/Permission.java

@@ -0,0 +1,128 @@
+package com.example.greenwatch;
+
+import static android.Manifest.permission.CAMERA;
+import static android.Manifest.permission.RECORD_AUDIO;
+import static android.Manifest.permission.WRITE_EXTERNAL_STORAGE;
+import static android.Manifest.permission.READ_EXTERNAL_STORAGE;
+
+import static androidx.core.app.ActivityCompat.requestPermissions;
+import static androidx.core.content.ContextCompat.checkSelfPermission;
+
+import android.Manifest;
+import android.app.Activity;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.pm.PackageManager;
+import android.os.Bundle;
+import android.util.Log;
+import android.view.View;
+
+import androidx.appcompat.app.AlertDialog;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.app.ActivityCompat;
+import androidx.core.content.ContextCompat;
+
+
+
+public class Permission {
+    private static final int PERMISSION_REQUEST_MICRO = 1;
+    private static final int PERMISSION_REQUEST_CAMERA = 2;
+    private static final int PERMISSION_REQUEST_ALARM = 1234;
+    private static final int PERMISSION_REQUEST_START = 1235;
+
+    public void startRechtePruefen(Context context, Activity activity){
+        boolean rechtKamera = checkSelfPermission(context, CAMERA) == PackageManager.PERMISSION_GRANTED;
+        boolean rechtAudio = checkSelfPermission(context, RECORD_AUDIO) == PackageManager.PERMISSION_GRANTED;
+        boolean rechtSchreiben = checkSelfPermission(context, WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED;
+        boolean rechtLesen = checkSelfPermission(context, READ_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED;
+
+        Log.d("Kamera Rechte", String.valueOf(rechtKamera));
+        Log.d("Audio Rechte", String.valueOf(rechtAudio));
+        Log.d("Schreib Rechte", String.valueOf(rechtSchreiben));
+        Log.d("Lese Rechte", String.valueOf(rechtLesen));
+
+        if(rechtKamera && rechtAudio && rechtSchreiben && rechtLesen){
+            Log.d("Rechte", "erteilt");
+        } else {
+            startRechteAnfordern(activity);
+        }
+    }
+
+    public boolean kameraRechtePruefen(Context context, Activity activity){
+        boolean rechtKamera = checkSelfPermission(context, CAMERA) == PackageManager.PERMISSION_GRANTED;
+        Log.d("Kamera Rechte", String.valueOf(rechtKamera));
+
+        if(rechtKamera){
+            Log.d("Kamerarechte", "erteilt");
+            return true;
+        } else {
+            kameraRechteAnfordern(activity);
+            if(checkSelfPermission(context, CAMERA) == PackageManager.PERMISSION_GRANTED){
+                return true;
+            } else {
+                return false;
+            }
+        }
+    }
+
+    public boolean microRechtePruefen(Context context, Activity activity){
+        boolean rechtAudio = checkSelfPermission(context, RECORD_AUDIO) == PackageManager.PERMISSION_GRANTED;
+        Log.d("Audio Rechte", String.valueOf(rechtAudio));
+
+        if(rechtAudio){
+            Log.d("Rechte", "erteilt");
+            return true;
+        } else {
+            microRechteAnfordern(activity);
+            if(checkSelfPermission(context, RECORD_AUDIO) == PackageManager.PERMISSION_GRANTED){
+                return true;
+            } else {
+                return false;
+            }
+        }
+    }
+
+    public boolean alarmRechtePruefen(Context context, Activity activity){
+        boolean rechtKamera = checkSelfPermission(context, CAMERA) == PackageManager.PERMISSION_GRANTED;
+        boolean rechtAudio = checkSelfPermission(context, RECORD_AUDIO) == PackageManager.PERMISSION_GRANTED;
+        boolean rechtSchreiben = checkSelfPermission(context, WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED;
+        boolean rechtLesen = checkSelfPermission(context, READ_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED;
+
+        Log.d("Kamera Rechte", String.valueOf(rechtKamera));
+        Log.d("Audio Rechte", String.valueOf(rechtAudio));
+        Log.d("Schreib Rechte", String.valueOf(rechtSchreiben));
+        Log.d("Lese Rechte", String.valueOf(rechtLesen));
+
+        if(rechtKamera && rechtAudio && rechtSchreiben && rechtLesen){
+            Log.d("Rechte", "erteilt");
+            return true;
+        } else {
+            alarmRechteAnfordern(activity);
+            if(checkSelfPermission(context, CAMERA) == PackageManager.PERMISSION_GRANTED
+                    && checkSelfPermission(context, RECORD_AUDIO) == PackageManager.PERMISSION_GRANTED
+                    && checkSelfPermission(context, WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED
+                    && checkSelfPermission(context, READ_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED){
+                return true;
+            } else {
+                return false;
+            }
+        }
+    }
+
+    public void startRechteAnfordern(Activity activity){
+        ActivityCompat.requestPermissions(activity, new String[]{CAMERA, RECORD_AUDIO, WRITE_EXTERNAL_STORAGE, READ_EXTERNAL_STORAGE}, PERMISSION_REQUEST_START);
+    }
+
+    public void kameraRechteAnfordern(Activity activity){
+        ActivityCompat.requestPermissions(activity, new String[]{CAMERA}, PERMISSION_REQUEST_CAMERA);
+    }
+
+    public void microRechteAnfordern(Activity activity){
+        ActivityCompat.requestPermissions(activity, new String[]{RECORD_AUDIO}, PERMISSION_REQUEST_MICRO);
+    }
+
+    public void alarmRechteAnfordern(Activity activity){
+        ActivityCompat.requestPermissions(activity, new String[]{CAMERA, RECORD_AUDIO, WRITE_EXTERNAL_STORAGE, READ_EXTERNAL_STORAGE}, PERMISSION_REQUEST_ALARM);
+    }
+
+}

app/src/main/java/com/example/greenwatch/VideodetectionActivity.java

@@ -9,14 +9,15 @@ import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
 
 import android.os.Bundle;
+import android.view.SurfaceView;
 import android.view.View;
 import android.widget.Button;
+import android.widget.TextView;
 import android.widget.Toast;
 
 import com.example.greenwatch.adapters.AlarmHistoryListAdapter;
 import com.example.greenwatch.adapters.DeviceListAdapter;
 import com.example.greenwatch.models.Device;
-import com.example.greenwatch.viewmodels.AccelerometerViewModel;
 import com.example.greenwatch.viewmodels.VideodetectionViewModel;
 import com.google.common.util.concurrent.ListenableFuture;
 
@@ -26,13 +27,20 @@ import java.util.concurrent.ExecutionException;
 public class VideodetectionActivity extends AppCompatActivity {
 
     private Button backToMainActivity;
+    private SurfaceView surfaceView;
+    private TextView tvVideodetectionDeviceListRecyclerView;
+    private TextView tvVideodetectionAlarmHistoryListRecyclerView;
     private VideodetectionViewModel mVideoDetectionViewModel;
+    private Permission permission = new Permission();
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_videodetection);
 
+        surfaceView = (SurfaceView) findViewById(R.id.surfaceViewVideodetection);
+        tvVideodetectionDeviceListRecyclerView = (TextView) findViewById(R.id.tvVideodetectionDeviceListRecyclerView);
+        tvVideodetectionAlarmHistoryListRecyclerView = (TextView) findViewById(R.id.tvVideodetectionAlarmHistoryListRecyclerView);
         backToMainActivity = (Button) findViewById(R.id.videodetectorBackToMainActivity);
 
         RecyclerView recyclerView = findViewById(R.id.deviceListRecyclerView);
@@ -57,7 +65,7 @@ public class VideodetectionActivity extends AppCompatActivity {
         });
 
         mVideoDetectionViewModel = new ViewModelProvider(this).get(VideodetectionViewModel.class);
-        mVideoDetectionViewModel.init();
+        mVideoDetectionViewModel.init(surfaceView.getHolder());
         mVideoDetectionViewModel.getConnectedDeviceList().observe(this, new Observer<List<Device>>() {
             @Override
             public void onChanged(List<Device> devices) {
@@ -76,7 +84,21 @@ public class VideodetectionActivity extends AppCompatActivity {
             @Override
             public void onChanged(Boolean aBoolean) {
                 if (aBoolean) {
-                    Toast.makeText(VideodetectionActivity.this, "Start Alarm Recording", Toast.LENGTH_LONG).show();
+                    if(permission.alarmRechtePruefen(VideodetectionActivity.this, VideodetectionActivity.this)){
+                        Toast.makeText(VideodetectionActivity.this, "Start Alarm Recording", Toast.LENGTH_LONG).show();
+                        mVideoDetectionViewModel.startAlarmRecording();
+                        //todo AlarmHandling einfügen
+                    } else {
+                        permission.alarmRechteAnfordern(VideodetectionActivity.this);
+                        if(permission.alarmRechtePruefen(VideodetectionActivity.this, VideodetectionActivity.this)){
+                            Toast.makeText(VideodetectionActivity.this, "Start Alarm Recording", Toast.LENGTH_LONG).show();
+                            mVideoDetectionViewModel.startAlarmRecording();
+                            //todo Alarmhandling einfügen
+                        } else {
+                            Toast.makeText(VideodetectionActivity.this, "Stop Alarm Recording", Toast.LENGTH_LONG).show();
+                            mVideoDetectionViewModel.stopAlarmRecording(VideodetectionActivity.this);
+                        }
+                    }
                 }
                 else {
                     Toast.makeText(VideodetectionActivity.this, "Stop Alarm Recording", Toast.LENGTH_LONG).show();
@@ -88,10 +110,10 @@ public class VideodetectionActivity extends AppCompatActivity {
             @Override
             public void onChanged(Boolean aBoolean) {
                 if (aBoolean) {
-                    mVideoDetectionViewModel.updateDevice(mVideoDetectionViewModel.getLocalDeviceUUID(), mVideoDetectionViewModel.getSystemTimeStamp(), true, "Video", 10);
+                    mVideoDetectionViewModel.updateDevice(mVideoDetectionViewModel.getLocalDeviceUUID(), mVideoDetectionViewModel.getSystemTimeStamp(), true, "Video", 1.0f);
                 }
                 else {
-                    mVideoDetectionViewModel.updateDevice(mVideoDetectionViewModel.getLocalDeviceUUID(), mVideoDetectionViewModel.getSystemTimeStamp(), false, "Video", 0);
+                    mVideoDetectionViewModel.updateDevice(mVideoDetectionViewModel.getLocalDeviceUUID(), mVideoDetectionViewModel.getSystemTimeStamp(), false, "Video", 0.0f);
                 }
 
             }

app/src/main/java/com/example/greenwatch/VideodetectionAndAccelerometerActivity.java

@@ -13,6 +13,7 @@ import android.hardware.SensorEvent;
 import android.hardware.SensorEventListener;
 import android.hardware.SensorManager;
 import android.os.Bundle;
+import android.view.SurfaceView;
 import android.view.View;
 import android.widget.Button;
 import android.widget.TextView;
@@ -32,20 +33,25 @@ import java.util.concurrent.ExecutionException;
 public class VideodetectionAndAccelerometerActivity extends AppCompatActivity implements SensorEventListener {
     private SensorManager accelerometerManager;
     private Sensor accelerometerSensor;
+    private SurfaceView surfaceView;
     private TextView videodetectionAndAccelerometerStatusMessage;
     private TextView videodetectionAndAccelerometerDataTV;
-    private TextView videodetectionAndAccelerometerWarningTV;
+    private TextView tvVideodetectionAndAccelerometerDeviceListRecyclerView;
+    private TextView tvVideodetectionAndAccelerometerAlarmHistoryListRecyclerView;
     private Button backToMainActivity;
     private VideodetectionAndAccelerometerViewModel mVideodetectionAndAccelerometerViewModel;
+    private Permission permission = new Permission();
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_videodetection_and_accelerometer);
 
+        surfaceView = (SurfaceView) findViewById(R.id.surfaceViewVideodetectionAndAccelerometer);
         videodetectionAndAccelerometerStatusMessage = (TextView) findViewById(R.id.tvvideodetectionAndAccelerometerStatusmessage);
         videodetectionAndAccelerometerDataTV = (TextView) findViewById(R.id.tvvideodetectionAndAccelerometerData);
-        videodetectionAndAccelerometerWarningTV = (TextView) findViewById(R.id.tvvideodetectionAndAccelerometerWarning);
+        tvVideodetectionAndAccelerometerDeviceListRecyclerView = (TextView) findViewById(R.id.tvVideodetectionAndAccelerometerDeviceListRecyclerView);
+        tvVideodetectionAndAccelerometerAlarmHistoryListRecyclerView = (TextView) findViewById(R.id.tvVideodetectionAndAccelerometerAlarmHistoryListRecyclerView);
         backToMainActivity = (Button) findViewById(R.id.videodetectionAndAccelerometerBackToMainActivity);
 
         RecyclerView recyclerView = findViewById(R.id.deviceListRecyclerView);
@@ -70,7 +76,7 @@ public class VideodetectionAndAccelerometerActivity extends AppCompatActivity im
         });
 
         mVideodetectionAndAccelerometerViewModel = new ViewModelProvider(this).get(VideodetectionAndAccelerometerViewModel.class);
-        mVideodetectionAndAccelerometerViewModel.init();
+        mVideodetectionAndAccelerometerViewModel.init(surfaceView.getHolder());
         mVideodetectionAndAccelerometerViewModel.getConnectedDeviceList().observe(this, new Observer<List<Device>>() {
             @Override
             public void onChanged(List<Device> devices) {
@@ -89,10 +95,25 @@ public class VideodetectionAndAccelerometerActivity extends AppCompatActivity im
             @Override
             public void onChanged(Boolean aBoolean) {
                 if (aBoolean) {
-                    Toast.makeText(VideodetectionAndAccelerometerActivity.this, "Start Alarm Recording", Toast.LENGTH_LONG).show();
+                    if(permission.alarmRechtePruefen(VideodetectionAndAccelerometerActivity.this, VideodetectionAndAccelerometerActivity.this)){
+                        Toast.makeText(VideodetectionAndAccelerometerActivity.this, "Start Alarm Recording", Toast.LENGTH_LONG).show();
+                        mVideodetectionAndAccelerometerViewModel.startAlarmRecording();
+                        //todo AlarmHandling einfügen
+                    } else {
+                        permission.alarmRechteAnfordern(VideodetectionAndAccelerometerActivity.this);
+                        if(permission.alarmRechtePruefen(VideodetectionAndAccelerometerActivity.this, VideodetectionAndAccelerometerActivity.this)){
+                            Toast.makeText(VideodetectionAndAccelerometerActivity.this, "Start Alarm Recording", Toast.LENGTH_LONG).show();
+                            mVideodetectionAndAccelerometerViewModel.startAlarmRecording();
+                            //todo Alarmhandling einfügen
+                        } else {
+                            Toast.makeText(VideodetectionAndAccelerometerActivity.this, "Stop Alarm Recording", Toast.LENGTH_LONG).show();
+                            mVideodetectionAndAccelerometerViewModel.stopAlarmRecording(VideodetectionAndAccelerometerActivity.this);
+                        }
+                    }
                 }
                 else {
                     Toast.makeText(VideodetectionAndAccelerometerActivity.this, "Stop Alarm Recording", Toast.LENGTH_LONG).show();
+                    mVideodetectionAndAccelerometerViewModel.stopAlarmRecording(VideodetectionAndAccelerometerActivity.this);
                 }
             }
         });
@@ -101,12 +122,19 @@ public class VideodetectionAndAccelerometerActivity extends AppCompatActivity im
             @Override
             public void onChanged(Boolean aBoolean) {
                 if (aBoolean) {
-                    mVideodetectionAndAccelerometerViewModel.updateDevice(mVideodetectionAndAccelerometerViewModel.getLocalDeviceUUID(), mVideodetectionAndAccelerometerViewModel.getSystemTimeStamp(), true, "Accelerometer", 10);
+                    if (mVideodetectionAndAccelerometerViewModel.getAccelerometerAlarmDetected() && !mVideodetectionAndAccelerometerViewModel.getVideoAlarmDetected()) {
+                        mVideodetectionAndAccelerometerViewModel.updateDevice(mVideodetectionAndAccelerometerViewModel.getLocalDeviceUUID(), mVideodetectionAndAccelerometerViewModel.getSystemTimeStamp(), true, "Accelerometer", mVideodetectionAndAccelerometerViewModel.getAccelerometerSensorMeanValue());
+                    }
+                    else if (mVideodetectionAndAccelerometerViewModel.getVideoAlarmDetected() && !mVideodetectionAndAccelerometerViewModel.getAccelerometerAlarmDetected()) {
+                        mVideodetectionAndAccelerometerViewModel.updateDevice(mVideodetectionAndAccelerometerViewModel.getLocalDeviceUUID(), mVideodetectionAndAccelerometerViewModel.getSystemTimeStamp(), true, "Video", 1.0f);
+                    }
+                    else if (mVideodetectionAndAccelerometerViewModel.getAccelerometerAlarmDetected() && mVideodetectionAndAccelerometerViewModel.getVideoAlarmDetected()) {
+                        mVideodetectionAndAccelerometerViewModel.updateDevice(mVideodetectionAndAccelerometerViewModel.getLocalDeviceUUID(), mVideodetectionAndAccelerometerViewModel.getSystemTimeStamp(), true, "VideoAndAccelerometer", mVideodetectionAndAccelerometerViewModel.getAccelerometerSensorMeanValue());
+                    }
                 }
                 else {
-                    mVideodetectionAndAccelerometerViewModel.updateDevice(mVideodetectionAndAccelerometerViewModel.getLocalDeviceUUID(), mVideodetectionAndAccelerometerViewModel.getSystemTimeStamp(), false, "Accelerometer", 0);
+                    mVideodetectionAndAccelerometerViewModel.updateDevice(mVideodetectionAndAccelerometerViewModel.getLocalDeviceUUID(), mVideodetectionAndAccelerometerViewModel.getSystemTimeStamp(), false, "VideoAndAccelerometer", 0.0f);
                 }
-
             }
         });
 

app/src/main/java/com/example/greenwatch/alarmrecorder/AlarmRecorder.java

@@ -0,0 +1,256 @@
+package com.example.greenwatch.alarmrecorder;
+
+import android.app.Activity;
+import android.content.Context;
+import android.media.MediaCodec;
+import android.media.MediaExtractor;
+import android.media.MediaFormat;
+import android.media.MediaMuxer;
+import android.media.MediaRecorder;
+import android.os.Environment;
+import android.view.SurfaceHolder;
+import android.widget.Toast;
+
+import com.example.greenwatch.MainActivity;
+import com.example.greenwatch.alarmrecorder.runnables.AudioRecorder;
+import com.example.greenwatch.alarmrecorder.runnables.VideoRecorder;
+import com.example.greenwatch.sensors.AccelerometerSensor;
+import com.example.greenwatch.sensors.CameraSensor;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.ByteBuffer;
+
+public class AlarmRecorder {
+    private static AlarmRecorder alarmRecorderInstance;
+    private boolean isRecording;
+    private String videoPath;
+    private String audioPath;
+    private MediaFormat videoFormat;
+    private MediaFormat audioFormat;
+    private MediaExtractor videoExtractor;
+    private MediaExtractor audioExtractor;
+    private AudioRecorder audioRecorderRunnable;
+    private VideoRecorder videoRecorderRunnable;
+    private SurfaceHolder previewHolder;
+    private MediaRecorder videoRecorder;
+    //private MediaRecorder audioRecorder;
+    private Thread videoThread; // Video-Thread als Instanzvariable
+    private Thread audioThread; // Audio-Thread als Instanzvariable
+
+    private AlarmRecorder() {
+        //audioRecorder = new MediaRecorder();
+        //videoRecorder = new MediaRecorder();
+        videoExtractor = new MediaExtractor();
+        audioExtractor = new MediaExtractor();
+        audioRecorderRunnable = new AudioRecorder();
+        videoRecorderRunnable = new VideoRecorder();
+    }
+
+    public static synchronized AlarmRecorder getInstance() {
+        if (alarmRecorderInstance == null){
+            alarmRecorderInstance = new AlarmRecorder();
+        }
+        return alarmRecorderInstance;
+    }
+
+    public void setPreviewHolder(SurfaceHolder previewHolder) {
+        this.previewHolder = previewHolder;
+    }
+
+    public void startRecording() {
+        createStoragePaths(); //Speicherort und -namen für Audio- und Video-Datei
+
+        setAudioPath(audioPath);
+        setVideoPath(videoPath);
+        setVideoRecorderPreviewHolder(previewHolder);
+
+        //audioThread = new Thread(audioRecorderRunnable);
+        videoThread = new Thread(videoRecorderRunnable);
+
+        //Threads starten
+        videoThread.start();
+        //audioThread.start();
+    }
+
+    public void stopRecording(Context context) {
+        try {
+            //stopAudioRecording();
+            stopVideoRecording();
+
+            Toast.makeText(context, "Video- und Audioaufzeichnung beendet", Toast.LENGTH_SHORT).show();
+
+            waitTillThreadsStopped();
+            File videoFile = new File(videoPath); //Speichere das aufgenommene Video
+            File audioFile = new File(audioPath); //Speichere die aufgenommene Audio
+
+            if (videoFile.exists() && audioFile.exists()) {
+                //Wenn Video- und Audioaufzeichnung gestoppt und abgespeichert sind, beginne mit dem Mergeprozess der beiden
+               // mergeVideoWithAudio();
+                Toast.makeText(context, "Video und Audio erfolgreich zusammengeführt", Toast.LENGTH_SHORT).show();
+            } else {
+                Toast.makeText(context, "Dateien wurden nicht gefunden!", Toast.LENGTH_SHORT).show();
+            }
+        } catch (RuntimeException stopException) {
+            stopException.printStackTrace();
+        }
+    }
+
+    private void createStoragePaths(){
+        //Pfade zum Zwischenspeichern der aufgenommenen Audio und Video-Datei
+        String externalStorageDirectory = Environment.getExternalStorageDirectory().getAbsolutePath();
+        String dcimDirectory = externalStorageDirectory + "/DCIM";
+        videoPath = dcimDirectory + "/video.mp4";
+        audioPath = dcimDirectory + "/audio.mp3";
+    }
+
+    private void setVideoPath(String videoPath) {
+        videoRecorderRunnable.setVideoPath(videoPath);
+    }
+
+    private void setVideoRecorderPreviewHolder(SurfaceHolder previewHolder) {
+        videoRecorderRunnable.setPreviewHolder(previewHolder);
+    }
+    private void stopVideoRecording(){
+        videoRecorderRunnable.stopVideoRecording();
+    }
+
+    private void setAudioPath(String audioPath) {
+        audioRecorderRunnable.setAudioPath(audioPath);
+    }
+
+    private void stopAudioRecording(){
+        audioRecorderRunnable.stopAudioRecording();
+    }
+
+    private void waitTillThreadsStopped(){
+        try {
+            videoThread.join();
+            audioThread.join();
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+    }
+
+    private void mergeVideoWithAudio() {
+        try {
+            setVideoExtractorDataSource(); //extrahieren der Video Datei, die zuvor zwischengespeichert wurde
+            setAudioExtractorDataSource(); //extrahieren der Audio Datei, die zuvor zwischengespeichert wurde
+
+            //Speicherort der später zusammengeführten Datei
+            String outputFilePath = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MOVIES).getAbsolutePath() + "/merged_video.mp4";
+            //MediaMuxer zum Zusammenführen einer Audio- und einer Videodatei
+            MediaMuxer muxer = new MediaMuxer(outputFilePath, MediaMuxer.OutputFormat.MUXER_OUTPUT_MPEG_4);
+            int videoTrack = muxer.addTrack(videoFormat);
+            int audioTrack = muxer.addTrack(audioFormat);
+            muxer.start();
+
+            ByteBuffer buffer = ByteBuffer.allocate(1024 * 1024);
+            MediaCodec.BufferInfo bufferInfo = new MediaCodec.BufferInfo();
+
+            videoExtraction(buffer, videoTrack, bufferInfo, muxer);
+            audioExtraction(buffer, audioTrack, bufferInfo, muxer);
+
+            muxer.stop();
+            muxer.release();
+
+            // Löschen der separaten Video- und Audio-Dateien
+            deleteVideoFile();
+            deleteAudioFile();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    private void setVideoExtractorDataSource() {
+        try {
+            videoExtractor.setDataSource(videoPath);
+            int videoTrackIndex = getTrackIndex(videoExtractor, "video/");
+            if (videoTrackIndex < 0) {
+                // Video-Track nicht gefunden
+                return;
+            }
+            videoExtractor.selectTrack(videoTrackIndex);
+            videoFormat = videoExtractor.getTrackFormat(videoTrackIndex);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    private void setAudioExtractorDataSource() {
+        try {
+            audioExtractor.setDataSource(audioPath);
+            int audioTrackIndex = getTrackIndex(audioExtractor, "audio/");
+            if (audioTrackIndex < 0) {
+                // Audio-Track nicht gefunden
+                return;
+            }
+            audioExtractor.selectTrack(audioTrackIndex);
+            audioFormat = audioExtractor.getTrackFormat(audioTrackIndex);
+
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    private int getTrackIndex(MediaExtractor extractor, String mimeType) {
+        int trackCount = extractor.getTrackCount();
+        for (int i = 0; i < trackCount; i++) {
+            MediaFormat format = extractor.getTrackFormat(i);
+            String trackMimeType = format.getString(MediaFormat.KEY_MIME);
+            if (trackMimeType.startsWith(mimeType)) {
+                return i;
+            }
+        }
+        return -1;
+    }
+
+    private void videoExtraction(ByteBuffer buffer, int videoTrack, MediaCodec.BufferInfo bufferInfo, MediaMuxer muxer) {
+        videoExtractor.seekTo(0, MediaExtractor.SEEK_TO_CLOSEST_SYNC);
+        while (true) {
+            int sampleSize = videoExtractor.readSampleData(buffer, 0);
+            if (sampleSize < 0) {
+                break;
+            }
+            long presentationTimeUs = videoExtractor.getSampleTime();
+            bufferInfo.offset = 0;
+            bufferInfo.size = sampleSize;
+            bufferInfo.flags = MediaCodec.BUFFER_FLAG_KEY_FRAME;
+            bufferInfo.presentationTimeUs = presentationTimeUs;
+            muxer.writeSampleData(videoTrack, buffer, bufferInfo);
+            videoExtractor.advance();
+        }
+    }
+
+    private void audioExtraction(ByteBuffer buffer, int audioTrack, MediaCodec.BufferInfo bufferInfo, MediaMuxer muxer) {
+        audioExtractor.seekTo(0, MediaExtractor.SEEK_TO_CLOSEST_SYNC);
+        while (true) {
+            int sampleSize = audioExtractor.readSampleData(buffer, 0);
+            if (sampleSize < 0) {
+                break;
+            }
+            long presentationTimeUs = audioExtractor.getSampleTime();
+            bufferInfo.offset = 0;
+            bufferInfo.size = sampleSize;
+            bufferInfo.flags = 0; // or MediaCodec.BUFFER_FLAG_KEY_FRAME
+            bufferInfo.presentationTimeUs = presentationTimeUs;
+            muxer.writeSampleData(audioTrack, buffer, bufferInfo);
+            audioExtractor.advance();
+        }
+    }
+
+
+    private void deleteVideoFile(){
+        File videoFile = new File(videoPath);
+        if (videoFile.exists()) {
+            videoFile.delete();
+        }
+    }
+
+    private void deleteAudioFile(){
+        File audioFile = new File(audioPath);
+        if (audioFile.exists()) {
+            audioFile.delete();
+        }
+    }
+}

app/src/main/java/com/example/greenwatch/alarmrecorder/runnables/AudioRecorder.java

@@ -0,0 +1,47 @@
+package com.example.greenwatch.alarmrecorder.runnables;
+
+import android.media.MediaRecorder;
+import android.view.SurfaceHolder;
+import android.widget.Toast;
+
+import com.example.greenwatch.MainActivity;
+
+import java.io.IOException;
+
+public class AudioRecorder implements Runnable {
+
+    private MediaRecorder audioRecorder;
+    private String audioPath;
+    public AudioRecorder() {
+        audioRecorder = new MediaRecorder();
+    }
+
+    public void setAudioPath(String audioPath) {
+        this.audioPath = audioPath;
+    }
+
+    public void stopAudioRecording(){
+        if (audioRecorder != null) {
+            audioRecorder.stop();
+            audioRecorder.reset();
+            audioRecorder.release();
+            audioRecorder = null;
+        }
+    }
+
+    @Override
+    public void run() {
+        audioRecorder = new MediaRecorder();
+        audioRecorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT);
+        audioRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
+        audioRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);
+        audioRecorder.setOutputFile(audioPath);
+
+        try {
+            audioRecorder.prepare();
+            audioRecorder.start();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+}

app/src/main/java/com/example/greenwatch/alarmrecorder/runnables/VideoRecorder.java

@@ -0,0 +1,54 @@
+package com.example.greenwatch.alarmrecorder.runnables;
+
+import android.media.MediaRecorder;
+import android.view.SurfaceHolder;
+
+import com.example.greenwatch.viewmodels.ViewModelInterface;
+
+import java.io.IOException;
+
+public class VideoRecorder implements Runnable{
+    private MediaRecorder videoRecorder;
+    private String videoPath;
+    private SurfaceHolder previewHolder;
+
+    public VideoRecorder() {
+        videoRecorder = new MediaRecorder();
+    }
+
+    public void setPreviewHolder(SurfaceHolder previewHolder) {
+        this.previewHolder = previewHolder;
+    }
+
+    public void setVideoPath(String audioPath) {
+        this.videoPath = audioPath;
+    }
+
+    public void stopVideoRecording(){
+        if (videoRecorder != null) {
+            videoRecorder.stop();
+            videoRecorder.reset();
+            videoRecorder.release();
+            videoRecorder = null;
+        }
+    }
+
+    @Override
+    public void run() {
+        videoRecorder = new MediaRecorder();
+        videoRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
+        videoRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
+        videoRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.DEFAULT);
+        videoRecorder.setOutputFile(videoPath);
+        videoRecorder.setOrientationHint(90);
+        videoRecorder.setPreviewDisplay(previewHolder.getSurface());
+
+        try {
+            videoRecorder.prepare();
+            videoRecorder.start();
+
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+}

app/src/main/java/com/example/greenwatch/communication/WiFiCommunication.java

@@ -1,7 +1,5 @@
 package com.example.greenwatch.communication;
 
-import android.util.Log;
-
 import com.example.greenwatch.repositories.DeviceRepository;
 
 import java.io.IOException;
@@ -19,7 +17,7 @@ public class WiFiCommunication {
     private final InetAddress address;
     private final DatagramSocket socket;
     private final int port;
-    private String rxString;
+    private volatile String rxString;
     private String sendMessage;
     //private String sendMsg = "default";
     private boolean isNewMessage;
@@ -50,7 +48,9 @@ public class WiFiCommunication {
     }
 
     public void setDeviceRepository(DeviceRepository deviceRepository) {
-        this.mDeviceRepository = deviceRepository;
+        if (mDeviceRepository == null) {
+            this.mDeviceRepository = deviceRepository;
+        }
     }
 
     public void setNewMessage(String newMessage, boolean isNewMessage){
@@ -58,6 +58,23 @@ public class WiFiCommunication {
         this.isNewMessage = isNewMessage;
     }
 
+    public static String getLocalIpAddress() {
+        try {
+            for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {
+                NetworkInterface networkInterface = (NetworkInterface) ((Enumeration<?>) en).nextElement();
+                for (Enumeration<InetAddress> addresses = networkInterface.getInetAddresses(); addresses.hasMoreElements();) {
+                    InetAddress inetAddress = addresses.nextElement();
+                    if (!inetAddress.isLoopbackAddress() && inetAddress instanceof Inet4Address) {
+                        return inetAddress.getHostAddress();
+                    }
+                }
+            }
+        } catch (SocketException ex) {
+            ex.printStackTrace();
+        }
+        return null;
+    }
+
     public void stopCommunication() {
         running = false;
         socket.close();
@@ -73,7 +90,6 @@ public class WiFiCommunication {
                     if(isNewMessage)
                     {
                         isNewMessage = false;
-                        //todo: adapt send String
                         String txString = sendMessage;
                         byte[] txBuffer = txString.getBytes();
 

app/src/main/java/com/example/greenwatch/models/Device.java

@@ -7,9 +7,9 @@ public class Device {
     private String deviceID;
     private boolean sensorStatus;
     private String sensorType;
-    private int sensorMassage;
+    private float sensorMassage;
 
-    public Device(String timeStamp, String deviceID, boolean sensorStatus, String sensorType, int sensorMassage) {
+    public Device(String timeStamp, String deviceID, boolean sensorStatus, String sensorType, float sensorMassage) {
         this.timeStamp = timeStamp;
         this.deviceID = deviceID;
         this.sensorStatus = sensorStatus;
@@ -47,11 +47,11 @@ public class Device {
         return sensorStatus;
     }
 
-    public void setSensorMassage(int sensorMassage) {
+    public void setSensorMassage(float sensorMassage) {
         this.sensorMassage = sensorMassage;
     }
 
-    public int getSensorMassage() {
+    public float getSensorMassage() {
         return sensorMassage;
     }
 }

app/src/main/java/com/example/greenwatch/repositories/DeviceRepository.java

@@ -1,21 +1,16 @@
 package com.example.greenwatch.repositories;
 
 
-import android.util.Log;
+import android.os.Looper;
 
 import androidx.lifecycle.MutableLiveData;
 
 import com.example.greenwatch.models.Device;
 import com.example.greenwatch.communication.WiFiCommunication;
 
-import java.net.Inet4Address;
-import java.net.InetAddress;
-import java.net.NetworkInterface;
-import java.net.SocketException;
 import java.text.SimpleDateFormat;
 import java.util.ArrayList;
 import java.util.Date;
-import java.util.Enumeration;
 import java.util.HashMap;
 import java.util.List;
 import java.util.UUID;
@@ -49,7 +44,10 @@ public class DeviceRepository {
     }
 
     public void setWiFiCommunication(WiFiCommunication wiFiCommunication) {
-        this.mWiFiCommunication = wiFiCommunication;
+        if (mWiFiCommunication == null) {
+            this.mWiFiCommunication = wiFiCommunication;
+        }
+
     }
 
     public MutableLiveData<List<Device>> getConnectedDeviceList() {
@@ -67,7 +65,7 @@ public class DeviceRepository {
         return startAlarmRecording;
     }
 
-    public void createNewDevice(String timeStamp, String deviceID, boolean sensorStatus, String sensorType, int sensorMassage){
+    public void createNewDevice(String timeStamp, String deviceID, boolean sensorStatus, String sensorType, float sensorMassage){
         Device newDevice = new Device(timeStamp, deviceID, sensorStatus, sensorType, sensorMassage);
         if (sensorStatus) {
             setAlarmHistoryDeviceList(newDevice);
@@ -83,21 +81,20 @@ public class DeviceRepository {
 
     public void getNewReceivedMessage(String newMessage) {
         String[] messageString = messageStringSplitter(newMessage);
-        if(messageString[0]=="1" && messageString.length == 7){
+        if(messageString[0].equals("1") && messageString.length == 7) {
             String timeStamp = messageString[1];
             String deviceID = messageString[3];
-            boolean sensorStatus = convertSensorStatus(messageString[4]);
+            boolean sensorStatus = convertRecievedSensorStatus(messageString[4]);
             String sensorType = messageString[5];
-            int sensorMassage = Integer.valueOf(messageString[6]);
+            float sensorMassage = Float.valueOf(messageString[6]);
 
             if (deviceID.equals(checkDeviceID(localDeviceUUID))) {
                 return;
             }
 
-            if(!connectedDevicesList.containsKey(deviceID)) {
+            if (!connectedDevicesList.containsKey(deviceID)) {
                 createNewDevice(timeStamp, deviceID, sensorStatus, sensorType, sensorMassage);
-            }
+            } else {
-            else {
                 updateDevice(deviceID, timeStamp, sensorStatus, sensorType, sensorMassage);
             }
         }
@@ -113,21 +110,20 @@ public class DeviceRepository {
                     .append(delimiter)
                     .append("Gruppe3")
                     .append(delimiter)
-                    //.append(device.getDeviceID())
+                    .append(device.getDeviceID())
-                    .append(getLocalIpAddress(deviceID))
                     .append(delimiter)
-                    .append(device.getSensorStatus())
+                    .append(convertSendSensorStatus(device.getSensorStatus()))
                     .append(delimiter)
                     .append(device.getSensorType())
                     .append(delimiter)
                     .append(device.getSensorMassage());
         }
         else {
-            message.append("")
+            message.append("1")
                     .append(delimiter)
                     .append("")
                     .append(delimiter)
-                    .append("")
+                    .append("Gruppe3")
                     .append(delimiter)
                     .append("")
                     .append(delimiter)
@@ -144,7 +140,7 @@ public class DeviceRepository {
         return localDeviceUUID;
     }
 
-    public void updateDevice(String deviceID, String timeStamp, boolean sensorStatus, String sensorType, int sensorMassage) {
+    public void updateDevice(String deviceID, String timeStamp, boolean sensorStatus, String sensorType, float sensorMassage) {
         String checkedDeviceID = checkDeviceID(deviceID);
         Device device = connectedDevicesList.get(checkedDeviceID);
         if(device != null) {
@@ -252,7 +248,7 @@ public class DeviceRepository {
         return "";
     }
 
-    public void setSensorMassage(String deviceID, int sensorMessage) {
+    public void setSensorMassage(String deviceID, float sensorMessage) {
         String checkedDeviceID = checkDeviceID(deviceID);
         Device device = connectedDevicesList.get(checkedDeviceID);
         if(device != null) {
@@ -262,7 +258,7 @@ public class DeviceRepository {
         }
     }
 
-    public int getSensorMassage(String deviceID) {
+    public float getSensorMassage(String deviceID) {
         String checkedDeviceID = checkDeviceID(deviceID);
         Device device = connectedDevicesList.get(checkedDeviceID);
         if(device != null) {
@@ -279,7 +275,12 @@ public class DeviceRepository {
 
     private void setMutableLiveDataDeviceList() {
         List<Device> list = new ArrayList<>(connectedDevicesList.values());
-        deviceList.setValue(list);
+        if (Looper.myLooper() == Looper.getMainLooper()){
+            deviceList.setValue(list);
+        }
+        else {
+            deviceList.postValue(list);
+        }
     }
 
     private void setMutableLiveDataAlarmHistoryList() {
@@ -316,10 +317,19 @@ public class DeviceRepository {
         return message.split(delimiter);
     }
 
-    private boolean convertSensorStatus(String status) {
+    private boolean convertRecievedSensorStatus(String status) {
         return status.equals(sensorStatusKey);
     }
 
+    private String convertSendSensorStatus(boolean status) {
+        if (status){
+            return "An";
+        }
+        else {
+            return "Aus";
+        }
+    }
+
     private void setAlarmHistoryDeviceList(Device device) {
         if (alarmHistoryDeviceList.size() == maxAlarmHistoryListSize) {
             alarmHistoryDeviceList.remove(alarmHistoryDeviceList.size() -1);
@@ -337,25 +347,4 @@ public class DeviceRepository {
         }
         return false;
     }
-
-    public String getLocalIpAddress(String deviceID) {
-        String checkedDeviceID = checkDeviceID(deviceID);
-        Device device = connectedDevicesList.get(checkedDeviceID);
-        if(device != null){
-            try {
-                for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {
-                    NetworkInterface networkInterface = (NetworkInterface) ((Enumeration<?>) en).nextElement();
-                    for (Enumeration<InetAddress> addresses = networkInterface.getInetAddresses(); addresses.hasMoreElements();) {
-                        InetAddress inetAddress = addresses.nextElement();
-                        if (!inetAddress.isLoopbackAddress() && inetAddress instanceof Inet4Address) {
-                            return inetAddress.getHostAddress();
-                        }
-                    }
-                }
-            } catch (SocketException ex) {
-                ex.printStackTrace();
-            }
-        }
-        return "";
-    }
 }

app/src/main/java/com/example/greenwatch/sensors/AccelerometerSensor.java

@@ -82,4 +82,8 @@ public class AccelerometerSensor {
             mAccelerometerAlarmDetected.setValue(false);
         }
     }
+
+    public float getAccelerometerSensorMeanValue() {
+        return meanValue;
+    }
 }

app/src/main/java/com/example/greenwatch/sensors/CameraSensor.java

@@ -3,6 +3,7 @@ package com.example.greenwatch.sensors;
 import android.content.Context;
 import android.graphics.ImageFormat;
 import android.media.Image;
+import android.os.Handler;
 import android.util.Size;
 
 import androidx.camera.core.CameraSelector;
@@ -18,9 +19,18 @@ public class CameraSensor {
     private final MutableLiveData<Boolean> mVideoAlarmDetected = new MutableLiveData<>();
     private static CameraSensor cameraSensorInstance;
     private boolean videoAlarmDetected;
+    private boolean isMotionDetected;
     private ByteBuffer previousBuffer;
     private int previousWidth;
     private int previousHeight;
+    private final int threshold = 50;
+    private int startX;
+    private int startY;
+    private int endX;
+    private int endY;
+    private static final long ALARM_RESET_DELAY = 5000;
+    private Runnable alarmResetRunnable;
+    private final Handler alarmResetHandler = new Handler();
 
     private CameraSensor() {
         videoAlarmDetected = false;
@@ -59,7 +69,7 @@ public class CameraSensor {
 
                         if (previousHeight != 0) {
                             assert currentImage != null;
-                            videoAlarmDetected = compareFrames(currentImage);
+                            isMotionDetected = compareFrames(currentImage);
                         }
 
                         assert currentImage != null;
@@ -72,6 +82,18 @@ public class CameraSensor {
 
                         currentImage.close();
 
+                        if (isMotionDetected) {
+
+                            videoAlarmDetected = true;
+
+                            if(alarmResetRunnable != null) {
+                                alarmResetHandler.removeCallbacks(alarmResetRunnable);
+                            }
+
+                            alarmResetRunnable = this::resetAlarmStatus;
+                            alarmResetHandler.postDelayed(alarmResetRunnable, ALARM_RESET_DELAY);
+                        }
+
                         checkAlarmCondition();
 
                     }
@@ -85,36 +107,76 @@ public class CameraSensor {
     }
 
     private boolean compareFrames(Image currentImage) {
-
+        Image.Plane[] planes = currentImage.getPlanes();
-        ByteBuffer currentBuffer = currentImage.getPlanes()[0].getBuffer();
+        ByteBuffer currentBuffer = planes[0].getBuffer();
-
         int currentWidth = currentImage.getWidth();
         int currentHeight = currentImage.getHeight();
+        int yRowStride = planes[0].getRowStride();
+        int yPixelStride = planes[0].getPixelStride();
 
         if (previousWidth != currentWidth || previousHeight != currentHeight) {
             return false;
         }
 
-        for (int row = 0; row < previousHeight; row++) {
+        int blockSize = kleinstesQuadrat(previousHeight, previousWidth) / 8;
-            for (int col = 0; col < previousWidth; col++) {
 
-                int previousIndex = row * previousWidth + col;
+        int numBlocksX = currentWidth / blockSize;
-                int currentIndex = row * currentWidth + col;
+        int numBlocksY = currentHeight / blockSize;
 
-                int previousPixel = previousBuffer.get(previousIndex) & 0xFF;
+        for (int blockY = 0; blockY < numBlocksY; blockY++) {
-                int currentPixel = currentBuffer.get(currentIndex) & 0xFF;
+            for (int blockX = 0; blockX < numBlocksX; blockX++) {
+                startX = blockX * blockSize;
+                startY = blockY * blockSize;
+                endX = startX + blockSize;
+                endY = startY + blockSize;
 
-                int pixelDifference = Math.abs(previousPixel - currentPixel);
+                float currentLuminance = berechneMittlereLuminanz(currentBuffer, yRowStride, yPixelStride);
-                int threshold = 120;
+                float previousLuminance = berechneMittlereLuminanz(previousBuffer, yRowStride, yPixelStride);
+
+                int pixelDifference = Math.abs((int) previousLuminance - (int) currentLuminance);
 
                 if (pixelDifference > threshold) {
+                    System.out.println(pixelDifference);
                     return true;
                 }
             }
         }
+
         return false;
     }
 
+    private float berechneMittlereLuminanz(ByteBuffer buffer, int rowStride, int pixelStride) {
+        int sumLuminance = 0;
+        int countPixels = 0;
+
+        for (int row = startY; row < endY; row++) {
+            for (int col = startX; col < endX; col++) {
+                int bufferIndex = row * rowStride + col * pixelStride;
+                int currentPixel = buffer.get(bufferIndex) & 0xFF;
+
+                sumLuminance += currentPixel;
+                countPixels++;
+            }
+        }
+
+        return (float) sumLuminance / countPixels;
+    }
+
+    private int kleinstesQuadrat(int height, int width) {
+        if (height == width) {
+            return height;
+        } else if (height > width) {
+            return kleinstesQuadrat(height - width, width);
+        } else {
+            return kleinstesQuadrat(height, width - height);
+        }
+    }
+
+    private void resetAlarmStatus() {
+        videoAlarmDetected = false;
+        alarmResetRunnable = null;
+    }
+
     public void checkAlarmCondition() {
         if (videoAlarmDetected && !mVideoAlarmDetected.getValue()) {
             setMutableLiveDataVideoAlarmDetected();

app/src/main/java/com/example/greenwatch/sensors/MicrofonHelperClasses/GleitenderMittelwert.java

@@ -0,0 +1,23 @@
+package com.example.greenwatch.sensors.MicrofonHelperClasses;
+
+public class GleitenderMittelwert {
+    private final float wichtungNeuerWert;
+    private final float wichtungAlterWert;
+    private float mittelwert = 0;
+
+    private boolean istMittelwertGesetzt = false;
+
+    public GleitenderMittelwert(float wichtungNeuerWert) {
+        this.wichtungNeuerWert = wichtungNeuerWert;
+        this.wichtungAlterWert = 1 - this.wichtungNeuerWert;
+    }
+
+    public float mittel(float wert) {
+        if (istMittelwertGesetzt) {
+            mittelwert = wert * wichtungNeuerWert + mittelwert * wichtungAlterWert;
+        } else {
+            mittelwert = wert;
+            istMittelwertGesetzt = true;
+        }
+        return mittelwert;
+    }}

app/src/main/java/com/example/greenwatch/sensors/MicrofonHelperClasses/RingPuffer.java

@@ -0,0 +1,38 @@
+package com.example.greenwatch.sensors.MicrofonHelperClasses;
+
+public class RingPuffer {
+
+    private short[] puffer;
+    private final int laenge;
+    private int anzahlEnthaltenerDaten;
+    private int position;
+
+
+    public RingPuffer(int n) {
+        laenge = n;
+        anzahlEnthaltenerDaten = 0;
+        position = 0;
+        puffer = new short[laenge];
+    }
+
+    public void hinzufuegen(short wert) {
+        puffer[position] = wert;
+        position++;
+        if (position >= laenge) {
+            position = 0;
+        }
+        if (anzahlEnthaltenerDaten < laenge) {
+            anzahlEnthaltenerDaten++;
+        }
+    }
+
+    public short maximum() {
+        short max = 0;
+        for (int i = 0; i < anzahlEnthaltenerDaten; i++) {
+            if (puffer[i] > max) {
+                max = puffer[i];
+            }
+        }
+        return max;
+    }
+}

app/src/main/java/com/example/greenwatch/sensors/MicrofonHelperClasses/Verarbeitungsergebnis.java

@@ -0,0 +1,37 @@
+package com.example.greenwatch.sensors.MicrofonHelperClasses;
+
+public class Verarbeitungsergebnis {
+    private String status;
+    private short maxAmp;
+    private float db;
+    //
+    public Verarbeitungsergebnis(String status, short maxAmp, int db) {
+        this.status = status;
+        this.maxAmp = maxAmp;
+        this.db = db;
+    }
+
+    public String getStatus() {
+        return status;
+    }
+
+    public void setStatus(String status) {
+        this.status = status;
+    }
+
+    public short getMaxAmp() {
+        return maxAmp;
+    }
+
+    public void setMaxAmp(short maxAmp) {
+        this.maxAmp = maxAmp;
+    }
+
+    public float getDB() {
+        return db;
+    }
+
+    public void setDB(float db) {
+        this.db = db;
+    }
+}

app/src/main/java/com/example/greenwatch/sensors/MicrofonSensor.java

@@ -0,0 +1,201 @@
+package com.example.greenwatch.sensors;
+
+import android.media.AudioFormat;
+import android.media.AudioRecord;
+import android.media.MediaRecorder;
+import android.os.AsyncTask;
+
+import androidx.lifecycle.MutableLiveData;
+
+import com.example.greenwatch.sensors.MicrofonHelperClasses.GleitenderMittelwert;
+import com.example.greenwatch.sensors.MicrofonHelperClasses.RingPuffer;
+import com.example.greenwatch.sensors.MicrofonHelperClasses.Verarbeitungsergebnis;
+
+ public class MicrofonSensor {
+
+     private MutableLiveData<Boolean> mMicrofonAlarmDetected = new MutableLiveData<>();
+     private AufnahmeTask aufnahmeTask;
+     private static MicrofonSensor microfonSensorInstance;
+     private boolean microfonAlarmDetected = false;
+     private boolean kalibrierung_do = true;
+     private float threshold = 40;
+     private float sensitivity = 10;
+
+     private float amplitudeInDB = 0;
+
+     private RingPuffer ringPuffer = new RingPuffer(10);
+
+     private MicrofonSensor() {
+     }
+
+     public static synchronized MicrofonSensor getInstance() {
+         if (microfonSensorInstance == null){
+             microfonSensorInstance = new MicrofonSensor();
+         }
+         return microfonSensorInstance;
+     }
+
+     public void start() {
+         aufnahmeTask = new AufnahmeTask();
+         aufnahmeTask.execute();
+     }
+
+     public void stop() {
+         if(aufnahmeTask !=null) {
+             aufnahmeTask.cancel(true);
+             aufnahmeTask = null;
+         }
+     }
+
+     public void doRecalibration() {
+         stop();
+         microfonAlarmDetected = false;
+         kalibrierung_do = true;
+         threshold = 40;
+         sensitivity = 10;
+         amplitudeInDB = 0;
+     }
+
+     public float getAmplitudeInDB() {
+         return amplitudeInDB;
+     }
+
+     private void setAmplitudeInDB(float amplitudeInDB) {
+         this.amplitudeInDB = amplitudeInDB;
+     }
+
+     public MutableLiveData<Boolean> getAccelerometerAlarmDetected() {
+         setMutableLiveDataMicrofonAlarmDetected();
+         return mMicrofonAlarmDetected;
+     }
+
+     private void setMutableLiveDataMicrofonAlarmDetected() {
+         mMicrofonAlarmDetected.setValue(microfonAlarmDetected);
+     }
+
+     class AufnahmeTask extends AsyncTask<Long, Verarbeitungsergebnis, Void> {
+         private AudioRecord recorder;
+         private final int sampleRateInHz = 44100;
+         private final int channelConfig = AudioFormat.CHANNEL_IN_MONO;
+         private final int audioFormat = AudioFormat.ENCODING_PCM_16BIT;
+         private int minPufferGroesseInBytes;
+         private int pufferGroesseInBytes;
+         public AufnahmeTask() {
+             minPufferGroesseInBytes = AudioRecord.getMinBufferSize(sampleRateInHz, channelConfig, audioFormat);
+             pufferGroesseInBytes = minPufferGroesseInBytes * 2;
+             recorder = new AudioRecord(MediaRecorder.AudioSource.MIC, sampleRateInHz, channelConfig, audioFormat, pufferGroesseInBytes);
+         }
+         public float kalibrieren(short[] puffer){
+             try {
+                 Thread.sleep(3000);
+
+             } catch (InterruptedException e) {
+                 e.printStackTrace();
+             }
+             int anzahlIterationen = 100;
+             float sum = 0.0f;
+             for(int i = 0; i < anzahlIterationen; i++){
+                 int z = recorder.read(puffer, 0, puffer.length);
+                 Verarbeitungsergebnis kalibrierung = verarbeiten(puffer, z);
+                 sum += kalibrierung.getDB();
+             }
+             return sum/anzahlIterationen;
+         }
+
+         public void Detektion(Verarbeitungsergebnis ergebnis){
+             if(ergebnis.getDB() >= (threshold+sensitivity)){
+                 microfonAlarmDetected = true;
+             }
+             else if (ergebnis.getDB() <= (threshold)) {
+                 microfonAlarmDetected = false;
+             }
+         }
+
+         @Override
+         protected Void doInBackground(Long... params) {
+
+             recorder.startRecording();
+             short[] puffer = new short[pufferGroesseInBytes / 2];
+             GleitenderMittelwert gleitenderMittelwertdB = new GleitenderMittelwert(0.2f);
+             float db = 0.0f;
+
+             //kalibrierung
+             if(kalibrierung_do){
+                 threshold = kalibrieren(puffer);
+                 kalibrierung_do = false;
+             }
+
+
+             for (; ; ) {
+                 if (isCancelled()) {
+                     break;
+                 }
+                 else {
+                     //ergebnis ermitteln
+                     int n = recorder.read(puffer, 0, puffer.length);
+                     Verarbeitungsergebnis ergebnis = verarbeiten(puffer, n);
+
+                     //Mittelwertberechnnung
+                     db = ergebnis.getDB();
+                     db = gleitenderMittelwertdB.mittel(db);
+                     ergebnis.setDB(db);
+
+                     //Db Wert mit Schwellwert vergleichen und Warnung setzen
+                     Detektion(ergebnis);
+                     publishProgress(ergebnis);
+
+                     try {
+                         Thread.sleep(10);
+                     } catch (InterruptedException e) {
+                         e.printStackTrace();
+                     }
+                 }
+             }
+             recorder.release();
+             return null;
+         }
+
+         private Verarbeitungsergebnis verarbeiten(short[] daten, int n) {
+             String status;
+             short maxAmp = -1;
+             int db = 0, db_wert = 0;
+
+             if (n == AudioRecord.ERROR_INVALID_OPERATION) {
+                 status = "ERROR_INVALID_OPERATION";
+             } else if (n == AudioRecord.ERROR_BAD_VALUE) {
+                 status = "ERROR_BAD_VALUE";
+             } else {
+                 status = "OK";
+                 short max = 0;
+                 for (int i = 0; i < n; i++) {
+                     if (daten[i] > max) {
+                         max = daten[i];
+                     }
+                 }
+                 ringPuffer.hinzufuegen(max);
+                 maxAmp = ringPuffer.maximum();
+             }
+             //Umwandlung Amplitudenwert in dB
+             db_wert = (int) (20*Math.log10(maxAmp));
+             if (db_wert > 0){
+                 db = db_wert;
+             }
+
+
+             return new Verarbeitungsergebnis(status, maxAmp, db);
+         }
+         @Override
+         protected void onProgressUpdate(Verarbeitungsergebnis... progress) {
+             super.onProgressUpdate(progress);
+
+             setAmplitudeInDB(progress[0].getDB());
+
+             if (microfonAlarmDetected != mMicrofonAlarmDetected.getValue()){
+                 setMutableLiveDataMicrofonAlarmDetected();
+             }
+             //textViewMaxAmpdb.setText("" + progress[0].db);
+         }
+
+     }
+}
+

app/src/main/java/com/example/greenwatch/viewmodels/AccelerometerViewModel.java

@@ -1,91 +1,81 @@
 package com.example.greenwatch.viewmodels;
 
+import android.Manifest;
+import android.app.Activity;
+import android.content.Context;
+import android.content.pm.PackageManager;
+import android.view.SurfaceHolder;
+
+import androidx.core.app.ActivityCompat;
+import androidx.core.content.ContextCompat;
 import androidx.lifecycle.LiveData;
 import androidx.lifecycle.MutableLiveData;
 import androidx.lifecycle.ViewModel;
 
+import com.example.greenwatch.alarmrecorder.AlarmRecorder;
 import com.example.greenwatch.models.Device;
 import com.example.greenwatch.repositories.DeviceRepository;
+import com.example.greenwatch.sensors.AccelerometerSensor;
 
-import java.text.SimpleDateFormat;
-import java.util.ArrayList;
-import java.util.Date;
 import java.util.List;
 
 public class AccelerometerViewModel extends ViewModel implements ViewModelInterface {
-
     private MutableLiveData<List<Device>> mDeviceList;
-    private MutableLiveData<Boolean> mMovementDetected = new MutableLiveData<>();
+    private MutableLiveData<Boolean> mAccelerometerAlarmDetected;
     private MutableLiveData<List<Device>> mAlarmHistoryList;
     private MutableLiveData<Boolean> mStartAlarmRecording;
+    private AccelerometerSensor mAccelerometerSensor;
+    private AlarmRecorder mAlarmRecorder;
     private DeviceRepository mDeviceRepository;
-    private ArrayList<Float> Gesamt_be;
-    int arraySize = 500;
-    int functionCallCount;
-    float meanValue;
-    float offsetValue;
-    float thresholdValue;
-    boolean startMeasuring;
 
     @Override
-    public void init() {
+    public void init(SurfaceHolder previewHolder) {
-        if (mDeviceList == null) {
+        if (mDeviceRepository == null) {
             mDeviceRepository = DeviceRepository.getInstance();
+        }
+        if (mAccelerometerSensor == null) {
+            mAccelerometerSensor = AccelerometerSensor.getInstance();
+        }
+        if (mAlarmRecorder == null) {
+            mAlarmRecorder = AlarmRecorder.getInstance();
+        }
+        if (mDeviceList == null) {
             mDeviceList = mDeviceRepository.getConnectedDeviceList();
+        }
+        if (mAlarmHistoryList == null) {
             mAlarmHistoryList = mDeviceRepository.getAlarmHistoryDeviceList();
+        }
+        if (mStartAlarmRecording == null) {
             mStartAlarmRecording = mDeviceRepository.getStartAlarmRecording();
         }
-        initGesamtBE();
+        if (mAccelerometerAlarmDetected == null) {
-        mMovementDetected.setValue(false);
+            mAccelerometerAlarmDetected = mAccelerometerSensor.getAccelerometerAlarmDetected();
-        functionCallCount = 0;
-        meanValue = 0f;
-        offsetValue = 0.1f;
-        thresholdValue = 0.15f;
-        startMeasuring = false;
-    }
-
-    public void initGesamtBE() {
-        Gesamt_be = new ArrayList<>(arraySize);
-        for (int i = 0; i < arraySize; i++) {
-            Gesamt_be.add(0f);
         }
+        setAlarmRecordingPreviewHolder(previewHolder);
     }
 
     public void addValueToGesamtBE(float newValue) {
-        if (Gesamt_be.size() == arraySize) {
+        mAccelerometerSensor.addValueToGesamtBE(newValue);
-            Gesamt_be.remove(Gesamt_be.size() -1);
-        }
-        Gesamt_be.add(0, newValue);
-        functionCallCount++;
     }
 
     public void meanValueCalculation() {
-        for (float element : Gesamt_be) {
+        mAccelerometerSensor.meanValueCalculation();
-            meanValue += Math.abs(element);
-        }
-        meanValue = meanValue/arraySize;
     }
 
     public void calibrateAccelerometerSensor() {
-        if (functionCallCount <= arraySize) {
+        mAccelerometerSensor.calibrateAccelerometerSensor();
-            offsetValue = meanValue;
-        }
-        else {
-            startMeasuring = true;
-        }
     }
 
     public void checkAlarmCondition() {
-        if (meanValue > (thresholdValue + offsetValue) && startMeasuring && !mMovementDetected.getValue()) {
+        mAccelerometerSensor.checkAlarmCondition();
-            mMovementDetected.setValue(true);
-        }
-        else if (meanValue < (thresholdValue + offsetValue) && mMovementDetected.getValue()){
-            mMovementDetected.setValue(false);
-        }
     }
 
-    public LiveData<Boolean> getMovementDetectedValue() {
+    public float getAccelerometerSensorMeanValue() {
-        return mMovementDetected;
+        return mAccelerometerSensor.getAccelerometerSensorMeanValue();
+    }
+
+    public LiveData<Boolean> getAccelerometerAlarmDetected() {
+        return mAccelerometerAlarmDetected;
     }
 
     @Override
@@ -104,7 +94,7 @@ public class AccelerometerViewModel extends ViewModel implements ViewModelInterf
     }
 
     @Override
-    public void updateDevice(String deviceID, String timeStamp, boolean sensorStatus, String sensorType, int sensorMassage) {
+    public void updateDevice(String deviceID, String timeStamp, boolean sensorStatus, String sensorType, float sensorMassage) {
         mDeviceRepository.updateDevice(deviceID, timeStamp, sensorStatus, sensorType, sensorMassage);
     }
 
@@ -149,12 +139,12 @@ public class AccelerometerViewModel extends ViewModel implements ViewModelInterf
     }
 
     @Override
-    public void setSensorMassage(String deviceID, int sensorMessage) {
+    public void setSensorMassage(String deviceID, float sensorMessage) {
         mDeviceRepository.setSensorMassage(deviceID, sensorMessage);
     }
 
     @Override
-    public int getSensorMassage(String deviceID) {
+    public float getSensorMassage(String deviceID) {
         return mDeviceRepository.getSensorMassage(deviceID);
     }
 
@@ -167,4 +157,19 @@ public class AccelerometerViewModel extends ViewModel implements ViewModelInterf
     public String getSystemTimeStamp() {
         return mDeviceRepository.getSystemTimeStamp();
     }
+
+    @Override
+    public void startAlarmRecording() {
+        mAlarmRecorder.startRecording();
+    }
+
+    @Override
+    public void stopAlarmRecording(Context context) {
+        mAlarmRecorder.stopRecording(context);
+    }
+
+    @Override
+    public void setAlarmRecordingPreviewHolder(SurfaceHolder previewHolder) {
+        mAlarmRecorder.setPreviewHolder(previewHolder);
+    }
 }

app/src/main/java/com/example/greenwatch/viewmodels/AudiodetectionAndAccelerometerViewModel.java

@@ -0,0 +1,258 @@
+package com.example.greenwatch.viewmodels;
+
+import android.content.Context;
+import android.view.SurfaceHolder;
+
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.MutableLiveData;
+import androidx.lifecycle.Observer;
+import androidx.lifecycle.ViewModel;
+
+import com.example.greenwatch.alarmrecorder.AlarmRecorder;
+import com.example.greenwatch.models.Device;
+import com.example.greenwatch.repositories.DeviceRepository;
+import com.example.greenwatch.sensors.AccelerometerSensor;
+import com.example.greenwatch.sensors.MicrofonSensor;
+
+import java.util.List;
+
+public class AudiodetectionAndAccelerometerViewModel extends ViewModel implements ViewModelInterface {
+    private MutableLiveData<List<Device>> mDeviceList;
+    private MutableLiveData<Boolean> mAccelerometerAlarmDetected;
+    private MutableLiveData<Boolean> mMicrofonAlarmDetected;
+    private MutableLiveData<Boolean> mAudiodetectionAndAccelerometerAlarmDetected = new MutableLiveData<>();
+    private MutableLiveData<List<Device>> mAlarmHistoryList;
+    private MutableLiveData<Boolean> mStartAlarmRecording;
+    private AccelerometerSensor mAccelerometerSensor;
+    private MicrofonSensor mMicrofonSensor;
+    private AlarmRecorder mAlarmRecorder;
+    private DeviceRepository mDeviceRepository;
+    private boolean microfonAlarmDetected;
+    private boolean accelerometerAlarmDetected;
+    private boolean microfondetectionAndAccelerometerAlarmDetected;
+
+    public void init() {
+
+    }
+
+    public void addValueToGesamtBE(float newValue) {
+        mAccelerometerSensor.addValueToGesamtBE(newValue);
+    }
+
+    public void meanValueCalculation() {
+        mAccelerometerSensor.meanValueCalculation();
+    }
+
+    public void calibrateAccelerometerSensor() {
+        mAccelerometerSensor.calibrateAccelerometerSensor();
+    }
+
+    public void checkAlarmCondition() {
+        mAccelerometerSensor.checkAlarmCondition();
+    }
+
+    public float getAccelerometerSensorMeanValue() {
+        return mAccelerometerSensor.getAccelerometerSensorMeanValue();
+    }
+
+    public LiveData<Boolean> getAudiodetectionAndAccelerometerAlarmDetected() {
+        setMutableLiveDataMicrofondetectionAndAccelerometerAlarmDetected();
+        return mAudiodetectionAndAccelerometerAlarmDetected;
+    }
+
+    public void startMicrofonSensor() {
+        mMicrofonSensor.start();
+    }
+
+    public void stopMicrofonSensor() {
+        mMicrofonSensor.stop();
+    }
+
+    public void recalibrationMicrofonSensor() {
+        mMicrofonSensor.doRecalibration();
+    }
+
+    public float getAmplitudeInDB() {
+        return mMicrofonSensor.getAmplitudeInDB();
+    }
+
+    private void setMutableLiveDataMicrofondetectionAndAccelerometerAlarmDetected() {
+        mAudiodetectionAndAccelerometerAlarmDetected.setValue(microfondetectionAndAccelerometerAlarmDetected);
+    }
+
+    private void setAccelerometerAlarmDetected(boolean accelerometerAlarmDetected) {
+        this.accelerometerAlarmDetected = accelerometerAlarmDetected;
+    }
+
+    public boolean getAccelerometerAlarmDetected() {
+        return accelerometerAlarmDetected;
+    }
+
+    private void setMicrofonAlarmDetected(boolean microfonAlarmDetected) {
+        this.microfonAlarmDetected = microfonAlarmDetected;
+    }
+
+    public boolean getMicrofonAlarmDetected() {
+        return microfonAlarmDetected;
+    }
+
+    Observer<Boolean> observer = new Observer<Boolean>() {
+        @Override
+        public void onChanged(Boolean aBoolean) {
+            setAccelerometerAlarmDetected(mAccelerometerAlarmDetected.getValue());
+            setMicrofonAlarmDetected(mMicrofonAlarmDetected.getValue());
+            if (microfonAlarmDetected || accelerometerAlarmDetected) {
+                microfondetectionAndAccelerometerAlarmDetected = true;
+                setMutableLiveDataMicrofondetectionAndAccelerometerAlarmDetected();
+
+            }
+            else if (!microfonAlarmDetected && !accelerometerAlarmDetected) {
+                microfondetectionAndAccelerometerAlarmDetected = false;
+                setMutableLiveDataMicrofondetectionAndAccelerometerAlarmDetected();
+            }
+        }
+    };
+
+    private void registerAlarmObserver() {
+        mMicrofonAlarmDetected.observeForever(observer);
+        mAccelerometerAlarmDetected.observeForever(observer);
+    }
+
+    @Override
+    protected void onCleared() {
+        super.onCleared();
+        mMicrofonAlarmDetected.removeObserver(observer);
+        mAccelerometerAlarmDetected.removeObserver(observer);
+    }
+
+    @Override
+    public void init(SurfaceHolder previewHolder) {
+        if (mDeviceRepository == null) {
+            mDeviceRepository = DeviceRepository.getInstance();
+        }
+        if (mAccelerometerSensor == null) {
+            mAccelerometerSensor = AccelerometerSensor.getInstance();
+        }
+        if (mMicrofonSensor == null) {
+            mMicrofonSensor = MicrofonSensor.getInstance();
+        }
+        if (mAlarmRecorder == null) {
+            mAlarmRecorder = AlarmRecorder.getInstance();
+        }
+        if (mDeviceList == null) {
+            mDeviceList = mDeviceRepository.getConnectedDeviceList();
+        }
+        if (mAlarmHistoryList == null) {
+            mAlarmHistoryList = mDeviceRepository.getAlarmHistoryDeviceList();
+        }
+        if (mStartAlarmRecording == null) {
+            mStartAlarmRecording = mDeviceRepository.getStartAlarmRecording();
+        }
+        if (mAccelerometerAlarmDetected == null) {
+            mAccelerometerAlarmDetected = mAccelerometerSensor.getAccelerometerAlarmDetected();
+        }
+        if (mMicrofonAlarmDetected == null) {
+            mMicrofonAlarmDetected = mMicrofonSensor.getAccelerometerAlarmDetected();
+        }
+        microfondetectionAndAccelerometerAlarmDetected = false;
+        accelerometerAlarmDetected = false;
+        microfonAlarmDetected = false;
+        registerAlarmObserver();
+        setAlarmRecordingPreviewHolder(previewHolder);
+    }
+
+    @Override
+    public LiveData<List<Device>> getConnectedDeviceList() {
+        return mDeviceList;
+    }
+
+    @Override
+    public LiveData<List<Device>> getAlarmHistoryList() {
+        return mAlarmHistoryList;
+    }
+
+    @Override
+    public LiveData<Boolean> getStartAlarmRecording() {
+        return mStartAlarmRecording;
+    }
+
+    @Override
+    public void updateDevice(String deviceID, String timeStamp, boolean sensorStatus, String sensorType, float sensorMassage) {
+        mDeviceRepository.updateDevice(deviceID, timeStamp, sensorStatus, sensorType, sensorMassage);
+    }
+
+    @Override
+    public void setTimeStamp(String deviceID, String timeStamp) {
+        mDeviceRepository.setTimeStamp(deviceID, timeStamp);
+    }
+
+    @Override
+    public String getTimeStamp(String deviceID) {
+        return mDeviceRepository.getTimeStamp(deviceID);
+    }
+
+    @Override
+    public void setDeviceID(String deviceID, String newDeviceID) {
+        mDeviceRepository.setDeviceID(deviceID, newDeviceID);
+    }
+
+    @Override
+    public String getDeviceID(String deviceID) {
+        return mDeviceRepository.getDeviceID(deviceID);
+    }
+
+    @Override
+    public void setSensorStatus(String deviceID, boolean sensorStatus) {
+        mDeviceRepository.setSensorStatus(deviceID, sensorStatus);
+    }
+
+    @Override
+    public boolean getSensorStatus(String deviceID) {
+        return mDeviceRepository.getSensorStatus(deviceID);
+    }
+
+    @Override
+    public void setSensorType(String deviceID, String sensorType) {
+        mDeviceRepository.setSensorType(deviceID, sensorType);
+    }
+
+    @Override
+    public String getSensorType(String deviceID) {
+        return mDeviceRepository.getSensorType(deviceID);
+    }
+
+    @Override
+    public void setSensorMassage(String deviceID, float sensorMessage) {
+        mDeviceRepository.setSensorMassage(deviceID, sensorMessage);
+    }
+
+    @Override
+    public float getSensorMassage(String deviceID) {
+        return mDeviceRepository.getSensorMassage(deviceID);
+    }
+
+    @Override
+    public String getLocalDeviceUUID() {
+        return mDeviceRepository.getLocalDeviceUUID();
+    }
+
+    @Override
+    public String getSystemTimeStamp() {
+        return mDeviceRepository.getSystemTimeStamp();
+    }
+
+    @Override
+    public void startAlarmRecording() {
+        mAlarmRecorder.startRecording();
+    }
+
+    @Override
+    public void stopAlarmRecording(Context context) {
+        mAlarmRecorder.stopRecording(context);
+    }
+
+    @Override
+    public void setAlarmRecordingPreviewHolder(SurfaceHolder previewHolder) {
+        mAlarmRecorder.setPreviewHolder(previewHolder);
+    }
+}

app/src/main/java/com/example/greenwatch/viewmodels/MainActivityViewModel.java

@@ -1,8 +1,10 @@
 package com.example.greenwatch.viewmodels;
 
+import android.Manifest;
 import android.app.Activity;
 import android.content.Context;
 import android.content.pm.PackageManager;
+import android.view.SurfaceHolder;
 
 import androidx.core.app.ActivityCompat;
 import androidx.core.content.ContextCompat;
@@ -10,9 +12,11 @@ import androidx.lifecycle.LiveData;
 import androidx.lifecycle.MutableLiveData;
 import androidx.lifecycle.ViewModel;
 
+import com.example.greenwatch.alarmrecorder.AlarmRecorder;
 import com.example.greenwatch.communication.WiFiCommunication;
 import com.example.greenwatch.models.Device;
 import com.example.greenwatch.repositories.DeviceRepository;
+import com.example.greenwatch.sensors.AccelerometerSensor;
 
 import java.util.List;
 
@@ -22,31 +26,36 @@ public class MainActivityViewModel extends ViewModel implements ViewModelInterfa
     private MutableLiveData<List<Device>> mAlarmHistoryList;
     private MutableLiveData<Boolean> mStartAlarmRecording;
     private DeviceRepository mDeviceRepository;
-    private static final int RIGHTS_REQUEST_CAMERA = 10;
+    private WiFiCommunication mWiFiCommunication;
+    private AlarmRecorder mAlarmRecorder;
 
     @Override
-    public void init() {
+    public void init(SurfaceHolder previewHolder) {
-        WiFiCommunication mWiFiCommunication;
+
-        if(mDeviceList != null) {
+        if (mDeviceRepository == null) {
-            return;
+            mDeviceRepository = DeviceRepository.getInstance();
+        }
+        if (mWiFiCommunication == null) {
+            mWiFiCommunication = WiFiCommunication.getInstance();
+        }
+        if (mAlarmRecorder == null) {
+            mAlarmRecorder = AlarmRecorder.getInstance();
+        }
+        if (mDeviceList == null) {
+            mDeviceList = mDeviceRepository.getConnectedDeviceList();
+        }
+        if (mAlarmHistoryList == null) {
+            mAlarmHistoryList = mDeviceRepository.getAlarmHistoryDeviceList();
+        }
+        if (mStartAlarmRecording == null) {
+            mStartAlarmRecording = mDeviceRepository.getStartAlarmRecording();
         }
-        //todo: check if WiFi instanz can be hold only by the repository
-        mDeviceRepository = DeviceRepository.getInstance();
-        mWiFiCommunication = WiFiCommunication.getInstance();
-        mDeviceRepository.setWiFiCommunication(mWiFiCommunication);
         mWiFiCommunication.setDeviceRepository(mDeviceRepository);
-        mDeviceRepository.createNewDevice(mDeviceRepository.getSystemTimeStamp(), mDeviceRepository.getLocalDeviceUUID(), false, "No Sensor selected", 0);
+        mDeviceRepository.setWiFiCommunication(mWiFiCommunication);
-        mDeviceList = mDeviceRepository.getConnectedDeviceList();
+        mDeviceRepository.createNewDevice(mDeviceRepository.getSystemTimeStamp(), mDeviceRepository.getLocalDeviceUUID(), false, "No Sensor selected", 0.0f);
-        mAlarmHistoryList = mDeviceRepository.getAlarmHistoryDeviceList();
+        mDeviceRepository.setDeviceID(mDeviceRepository.getLocalDeviceUUID(), WiFiCommunication.getLocalIpAddress());
-        mStartAlarmRecording = mDeviceRepository.getStartAlarmRecording();
+        setAlarmRecordingPreviewHolder(previewHolder);
-    }
+        mWiFiCommunication = null;
-
-    public boolean isCameraAccessAllowed(Context context) {
-        return ContextCompat.checkSelfPermission(context, android.Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED;
-    }
-
-    public void accessRequestCamera(Activity activity) {
-        ActivityCompat.requestPermissions(activity, new String[]{android.Manifest.permission.CAMERA}, RIGHTS_REQUEST_CAMERA);
     }
 
     @Override
@@ -65,7 +74,7 @@ public class MainActivityViewModel extends ViewModel implements ViewModelInterfa
     }
 
     @Override
-    public void updateDevice(String deviceID, String timeStamp, boolean sensorStatus, String sensorType, int sensorMassage) {
+    public void updateDevice(String deviceID, String timeStamp, boolean sensorStatus, String sensorType, float sensorMassage) {
         mDeviceRepository.updateDevice(deviceID, timeStamp, sensorStatus, sensorType, sensorMassage);
     }
 
@@ -110,12 +119,12 @@ public class MainActivityViewModel extends ViewModel implements ViewModelInterfa
     }
 
     @Override
-    public void setSensorMassage(String deviceID, int sensorMessage) {
+    public void setSensorMassage(String deviceID, float sensorMessage) {
         mDeviceRepository.setSensorMassage(deviceID, sensorMessage);
     }
 
     @Override
-    public int getSensorMassage(String deviceID) {
+    public float getSensorMassage(String deviceID) {
         return mDeviceRepository.getSensorMassage(deviceID);
     }
 
@@ -126,6 +135,21 @@ public class MainActivityViewModel extends ViewModel implements ViewModelInterfa
 
     @Override
     public String getSystemTimeStamp() {
-        return null;
+        return mDeviceRepository.getSystemTimeStamp();
+    }
+
+    @Override
+    public void startAlarmRecording() {
+        mAlarmRecorder.startRecording();
+    }
+
+    @Override
+    public void stopAlarmRecording(Context context) {
+        mAlarmRecorder.stopRecording(context);
+    }
+
+    @Override
+    public void setAlarmRecordingPreviewHolder(SurfaceHolder previewHolder) {
+        mAlarmRecorder.setPreviewHolder(previewHolder);
     }
 }

app/src/main/java/com/example/greenwatch/viewmodels/MicrofonViewModel.java

@@ -0,0 +1,167 @@
+package com.example.greenwatch.viewmodels;
+
+import android.content.Context;
+import android.view.SurfaceHolder;
+
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.MutableLiveData;
+import androidx.lifecycle.ViewModel;
+
+import com.example.greenwatch.alarmrecorder.AlarmRecorder;
+import com.example.greenwatch.models.Device;
+import com.example.greenwatch.repositories.DeviceRepository;
+import com.example.greenwatch.sensors.AccelerometerSensor;
+import com.example.greenwatch.sensors.MicrofonSensor;
+
+import java.util.List;
+
+public class MicrofonViewModel extends ViewModel implements ViewModelInterface {
+    private MutableLiveData<List<Device>> mDeviceList;
+    private MutableLiveData<Boolean> mMicrofonAlarmDetected;
+    private MutableLiveData<List<Device>> mAlarmHistoryList;
+    private MutableLiveData<Boolean> mStartAlarmRecording;
+    private MicrofonSensor mMicrofonSensor;
+    private DeviceRepository mDeviceRepository;
+    private AlarmRecorder mAlarmRecorder;
+
+    public void startMicrofonSensor() {
+        mMicrofonSensor.start();
+    }
+
+    public void stopMicrofonSensor() {
+        mMicrofonSensor.stop();
+    }
+
+    public void recalibrationMicrofonSensor() {
+        mMicrofonSensor.doRecalibration();
+    }
+
+    public float getAmplitudeInDB() {
+        return mMicrofonSensor.getAmplitudeInDB();
+    }
+
+    public LiveData<Boolean> getMicrofonAlarmDetected() {
+        return mMicrofonAlarmDetected;
+    }
+
+    @Override
+    public void init(SurfaceHolder previewHolder) {
+        if (mDeviceRepository == null) {
+            mDeviceRepository = DeviceRepository.getInstance();
+        }
+        if (mMicrofonSensor == null) {
+            mMicrofonSensor = MicrofonSensor.getInstance();
+        }
+        if (mAlarmRecorder == null) {
+            mAlarmRecorder = AlarmRecorder.getInstance();
+        }
+        if (mDeviceList == null) {
+            mDeviceList = mDeviceRepository.getConnectedDeviceList();
+        }
+        if (mAlarmHistoryList == null) {
+            mAlarmHistoryList = mDeviceRepository.getAlarmHistoryDeviceList();
+        }
+        if (mStartAlarmRecording == null) {
+            mStartAlarmRecording = mDeviceRepository.getStartAlarmRecording();
+        }
+        if (mMicrofonAlarmDetected == null) {
+            mMicrofonAlarmDetected = mMicrofonSensor.getAccelerometerAlarmDetected();
+        }
+        setAlarmRecordingPreviewHolder(previewHolder);
+    }
+
+    @Override
+    public LiveData<List<Device>> getConnectedDeviceList() {
+        return mDeviceList;
+    }
+
+    @Override
+    public LiveData<List<Device>> getAlarmHistoryList() {
+        return mAlarmHistoryList;
+    }
+
+    @Override
+    public LiveData<Boolean> getStartAlarmRecording() {
+        return mStartAlarmRecording;
+    }
+
+    @Override
+    public void updateDevice(String deviceID, String timeStamp, boolean sensorStatus, String sensorType, float sensorMassage) {
+        mDeviceRepository.updateDevice(deviceID, timeStamp, sensorStatus, sensorType, sensorMassage);
+    }
+
+    @Override
+    public void setTimeStamp(String deviceID, String timeStamp) {
+        mDeviceRepository.setTimeStamp(deviceID, timeStamp);
+    }
+
+    @Override
+    public String getTimeStamp(String deviceID) {
+        return mDeviceRepository.getTimeStamp(deviceID);
+    }
+
+    @Override
+    public void setDeviceID(String deviceID, String newDeviceID) {
+        mDeviceRepository.setDeviceID(deviceID, newDeviceID);
+    }
+
+    @Override
+    public String getDeviceID(String deviceID) {
+        return mDeviceRepository.getDeviceID(deviceID);
+    }
+
+    @Override
+    public void setSensorStatus(String deviceID, boolean sensorStatus) {
+        mDeviceRepository.setSensorStatus(deviceID, sensorStatus);
+    }
+
+    @Override
+    public boolean getSensorStatus(String deviceID) {
+        return mDeviceRepository.getSensorStatus(deviceID);
+    }
+
+    @Override
+    public void setSensorType(String deviceID, String sensorType) {
+        mDeviceRepository.setSensorType(deviceID, sensorType);
+    }
+
+    @Override
+    public String getSensorType(String deviceID) {
+        return mDeviceRepository.getSensorType(deviceID);
+    }
+
+    @Override
+    public void setSensorMassage(String deviceID, float sensorMessage) {
+        mDeviceRepository.setSensorMassage(deviceID, sensorMessage);
+    }
+
+    @Override
+    public float getSensorMassage(String deviceID) {
+        return mDeviceRepository.getSensorMassage(deviceID);
+    }
+
+    @Override
+    public String getLocalDeviceUUID() {
+        return mDeviceRepository.getLocalDeviceUUID();
+    }
+
+    @Override
+    public String getSystemTimeStamp() {
+        return mDeviceRepository.getSystemTimeStamp();
+    }
+
+    @Override
+    public void startAlarmRecording() {
+        mAlarmRecorder.startRecording();
+    }
+
+    @Override
+    public void stopAlarmRecording(Context context) {
+        mAlarmRecorder.stopRecording(context);
+    }
+
+    @Override
+    public void setAlarmRecordingPreviewHolder(SurfaceHolder previewHolder) {
+        mAlarmRecorder.setPreviewHolder(previewHolder);
+    }
+}

app/src/main/java/com/example/greenwatch/viewmodels/VideodetectionAndAccelerometerViewModel.java

@@ -1,6 +1,7 @@
 package com.example.greenwatch.viewmodels;
 
 import android.content.Context;
+import android.view.SurfaceHolder;
 
 import androidx.camera.lifecycle.ProcessCameraProvider;
 import androidx.lifecycle.LifecycleOwner;
@@ -9,6 +10,7 @@ import androidx.lifecycle.MutableLiveData;
 import androidx.lifecycle.Observer;
 import androidx.lifecycle.ViewModel;
 
+import com.example.greenwatch.alarmrecorder.AlarmRecorder;
 import com.example.greenwatch.models.Device;
 import com.example.greenwatch.repositories.DeviceRepository;
 import com.example.greenwatch.sensors.AccelerometerSensor;
@@ -26,37 +28,10 @@ public class VideodetectionAndAccelerometerViewModel extends ViewModel implement
     private AccelerometerSensor mAccelerometerSensor;
     private CameraSensor mCameraSensor;
     private DeviceRepository mDeviceRepository;
-    private boolean VideodetectionAndAccelerometerAlarmDetected;
+    private AlarmRecorder mAlarmRecorder;
-
+    private boolean videoAlarmDetected;
-    @Override
+    private boolean accelerometerAlarmDetected;
-    public void init() {
+    private boolean videodetectionAndAccelerometerAlarmDetected;
-        if (mDeviceRepository == null) {
-            mDeviceRepository = DeviceRepository.getInstance();
-        }
-        if (mAccelerometerSensor == null) {
-            mAccelerometerSensor = AccelerometerSensor.getInstance();
-        }
-        if (mCameraSensor == null) {
-            mCameraSensor = CameraSensor.getInstance();
-        }
-        if (mDeviceList == null) {
-            mDeviceList = mDeviceRepository.getConnectedDeviceList();
-        }
-        if (mAlarmHistoryList == null) {
-            mAlarmHistoryList = mDeviceRepository.getAlarmHistoryDeviceList();
-        }
-        if (mStartAlarmRecording == null) {
-            mStartAlarmRecording = mDeviceRepository.getStartAlarmRecording();
-        }
-        if (mAccelerometerAlarmDetected == null) {
-            mAccelerometerAlarmDetected = mAccelerometerSensor.getAccelerometerAlarmDetected();
-        }
-        if (mVideoAlarmDetected == null) {
-            mVideoAlarmDetected = mCameraSensor.getVideoAlarmDetectedValue();
-        }
-        VideodetectionAndAccelerometerAlarmDetected = false;
-        registerAlarmObserver();
-    }
 
     public void addValueToGesamtBE(float newValue) {
         mAccelerometerSensor.addValueToGesamtBE(newValue);
@@ -74,6 +49,10 @@ public class VideodetectionAndAccelerometerViewModel extends ViewModel implement
         mAccelerometerSensor.checkAlarmCondition();
     }
 
+    public float getAccelerometerSensorMeanValue() {
+        return mAccelerometerSensor.getAccelerometerSensorMeanValue();
+    }
+
     public void bindImageAnalysis(ProcessCameraProvider cameraProvider, LifecycleOwner lifecycleOwner, Context context) {
         mCameraSensor.bindImageAnalysis(cameraProvider, lifecycleOwner, context);
     }
@@ -84,19 +63,37 @@ public class VideodetectionAndAccelerometerViewModel extends ViewModel implement
     }
 
     private void setMutableLiveDataVideodetectionAndAccelerometerAlarmDetected() {
-        mVideodetectionAndAccelerometerAlarmDetected.setValue(VideodetectionAndAccelerometerAlarmDetected);
+        mVideodetectionAndAccelerometerAlarmDetected.setValue(videodetectionAndAccelerometerAlarmDetected);
+    }
+
+    private void setAccelerometerAlarmDetected(boolean accelerometerAlarmDetected) {
+        this.accelerometerAlarmDetected = accelerometerAlarmDetected;
+    }
+
+    public boolean getAccelerometerAlarmDetected() {
+        return accelerometerAlarmDetected;
+    }
+
+    private void setVideoAlarmDetected(boolean videoAlarmDetected) {
+        this.videoAlarmDetected = videoAlarmDetected;
+    }
+
+    public boolean getVideoAlarmDetected() {
+        return videoAlarmDetected;
     }
 
     Observer<Boolean> observer = new Observer<Boolean>() {
         @Override
         public void onChanged(Boolean aBoolean) {
-            if (mVideoAlarmDetected.getValue() || mAccelerometerAlarmDetected.getValue() && !VideodetectionAndAccelerometerAlarmDetected) {
+            setAccelerometerAlarmDetected(mAccelerometerAlarmDetected.getValue());
-                VideodetectionAndAccelerometerAlarmDetected = true;
+            setVideoAlarmDetected(mVideoAlarmDetected.getValue());
+            if (videoAlarmDetected || accelerometerAlarmDetected && !videodetectionAndAccelerometerAlarmDetected) {
+                videodetectionAndAccelerometerAlarmDetected = true;
                 setMutableLiveDataVideodetectionAndAccelerometerAlarmDetected();
 
             }
-            else if (!mVideoAlarmDetected.getValue() && !mAccelerometerAlarmDetected.getValue() && VideodetectionAndAccelerometerAlarmDetected) {
+            else if (!videoAlarmDetected && !accelerometerAlarmDetected && videodetectionAndAccelerometerAlarmDetected) {
-                VideodetectionAndAccelerometerAlarmDetected = false;
+                videodetectionAndAccelerometerAlarmDetected = false;
                 setMutableLiveDataVideodetectionAndAccelerometerAlarmDetected();
             }
         }
@@ -114,6 +111,42 @@ public class VideodetectionAndAccelerometerViewModel extends ViewModel implement
         mAccelerometerAlarmDetected.removeObserver(observer);
     }
 
+    @Override
+    public void init(SurfaceHolder previewHolder) {
+        if (mDeviceRepository == null) {
+            mDeviceRepository = DeviceRepository.getInstance();
+        }
+        if (mAccelerometerSensor == null) {
+            mAccelerometerSensor = AccelerometerSensor.getInstance();
+        }
+        if (mCameraSensor == null) {
+            mCameraSensor = CameraSensor.getInstance();
+        }
+        if (mAlarmRecorder == null) {
+            mAlarmRecorder = AlarmRecorder.getInstance();
+        }
+        if (mDeviceList == null) {
+            mDeviceList = mDeviceRepository.getConnectedDeviceList();
+        }
+        if (mAlarmHistoryList == null) {
+            mAlarmHistoryList = mDeviceRepository.getAlarmHistoryDeviceList();
+        }
+        if (mStartAlarmRecording == null) {
+            mStartAlarmRecording = mDeviceRepository.getStartAlarmRecording();
+        }
+        if (mAccelerometerAlarmDetected == null) {
+            mAccelerometerAlarmDetected = mAccelerometerSensor.getAccelerometerAlarmDetected();
+        }
+        if (mVideoAlarmDetected == null) {
+            mVideoAlarmDetected = mCameraSensor.getVideoAlarmDetectedValue();
+        }
+        videodetectionAndAccelerometerAlarmDetected = false;
+        videoAlarmDetected = false;
+        accelerometerAlarmDetected = false;
+        registerAlarmObserver();
+        setAlarmRecordingPreviewHolder(previewHolder);
+    }
+
     @Override
     public LiveData<List<Device>> getConnectedDeviceList() {
         return mDeviceList;
@@ -130,7 +163,7 @@ public class VideodetectionAndAccelerometerViewModel extends ViewModel implement
     }
 
     @Override
-    public void updateDevice(String deviceID, String timeStamp, boolean sensorStatus, String sensorType, int sensorMassage) {
+    public void updateDevice(String deviceID, String timeStamp, boolean sensorStatus, String sensorType, float sensorMassage) {
         mDeviceRepository.updateDevice(deviceID, timeStamp, sensorStatus, sensorType, sensorMassage);
     }
 
@@ -175,12 +208,12 @@ public class VideodetectionAndAccelerometerViewModel extends ViewModel implement
     }
 
     @Override
-    public void setSensorMassage(String deviceID, int sensorMessage) {
+    public void setSensorMassage(String deviceID, float sensorMessage) {
         mDeviceRepository.setSensorMassage(deviceID, sensorMessage);
     }
 
     @Override
-    public int getSensorMassage(String deviceID) {
+    public float getSensorMassage(String deviceID) {
         return mDeviceRepository.getSensorMassage(deviceID);
     }
 
@@ -193,4 +226,19 @@ public class VideodetectionAndAccelerometerViewModel extends ViewModel implement
     public String getSystemTimeStamp() {
         return mDeviceRepository.getSystemTimeStamp();
     }
+
+    @Override
+    public void startAlarmRecording() {
+        mAlarmRecorder.startRecording();
+    }
+
+    @Override
+    public void stopAlarmRecording(Context context) {
+        mAlarmRecorder.stopRecording(context);
+    }
+
+    @Override
+    public void setAlarmRecordingPreviewHolder(SurfaceHolder previewHolder) {
+        mAlarmRecorder.setPreviewHolder(previewHolder);
+    }
 }

app/src/main/java/com/example/greenwatch/viewmodels/VideodetectionViewModel.java

@@ -1,6 +1,7 @@
 package com.example.greenwatch.viewmodels;
 
 import android.content.Context;
+import android.view.SurfaceHolder;
 
 import androidx.camera.lifecycle.ProcessCameraProvider;
 import androidx.lifecycle.LifecycleOwner;
@@ -8,6 +9,7 @@ import androidx.lifecycle.LiveData;
 import androidx.lifecycle.MutableLiveData;
 import androidx.lifecycle.ViewModel;
 
+import com.example.greenwatch.alarmrecorder.AlarmRecorder;
 import com.example.greenwatch.models.Device;
 import com.example.greenwatch.repositories.DeviceRepository;
 import com.example.greenwatch.sensors.CameraSensor;
@@ -21,6 +23,7 @@ public class VideodetectionViewModel extends ViewModel implements ViewModelInter
     private MutableLiveData<List<Device>> mAlarmHistoryList;
     private MutableLiveData<Boolean> mStartAlarmRecording;
     private DeviceRepository mDeviceRepository;
+    private AlarmRecorder mAlarmRecorder;
     private CameraSensor mCameraSensor;
 
 
@@ -29,13 +32,16 @@ public class VideodetectionViewModel extends ViewModel implements ViewModelInter
     }
 
     @Override
-    public void init() {
+    public void init(SurfaceHolder previewHolder) {
         if (mDeviceRepository == null) {
             mDeviceRepository = DeviceRepository.getInstance();
         }
         if (mCameraSensor == null) {
             mCameraSensor = CameraSensor.getInstance();
         }
+        if (mAlarmRecorder == null) {
+            mAlarmRecorder = AlarmRecorder.getInstance();
+        }
         if (mDeviceList == null) {
             mDeviceList = mDeviceRepository.getConnectedDeviceList();
         }
@@ -48,6 +54,7 @@ public class VideodetectionViewModel extends ViewModel implements ViewModelInter
         if (mVideoAlarmDetected == null) {
             mVideoAlarmDetected = mCameraSensor.getVideoAlarmDetectedValue();
         }
+        setAlarmRecordingPreviewHolder(previewHolder);
     }
 
     public void bindImageAnalysis(ProcessCameraProvider cameraProvider, LifecycleOwner lifecycleOwner, Context context) {
@@ -74,7 +81,7 @@ public class VideodetectionViewModel extends ViewModel implements ViewModelInter
     }
 
     @Override
-    public void updateDevice(String deviceID, String timeStamp, boolean sensorStatus, String sensorType, int sensorMassage) {
+    public void updateDevice(String deviceID, String timeStamp, boolean sensorStatus, String sensorType, float sensorMassage) {
         mDeviceRepository.updateDevice(deviceID, timeStamp, sensorStatus, sensorType, sensorMassage);
     }
 
@@ -119,12 +126,12 @@ public class VideodetectionViewModel extends ViewModel implements ViewModelInter
     }
 
     @Override
-    public void setSensorMassage(String deviceID, int sensorMessage) {
+    public void setSensorMassage(String deviceID, float sensorMessage) {
         mDeviceRepository.setSensorMassage(deviceID, sensorMessage);
     }
 
     @Override
-    public int getSensorMassage(String deviceID) {
+    public float getSensorMassage(String deviceID) {
         return mDeviceRepository.getSensorMassage(deviceID);
     }
 
@@ -137,4 +144,19 @@ public class VideodetectionViewModel extends ViewModel implements ViewModelInter
     public String getSystemTimeStamp() {
         return mDeviceRepository.getSystemTimeStamp();
     }
+
+    @Override
+    public void startAlarmRecording() {
+        mAlarmRecorder.startRecording();
+    }
+
+    @Override
+    public void stopAlarmRecording(Context context) {
+        mAlarmRecorder.stopRecording(context);
+    }
+
+    @Override
+    public void setAlarmRecordingPreviewHolder(SurfaceHolder previewHolder) {
+        mAlarmRecorder.setPreviewHolder(previewHolder);
+    }
 }

app/src/main/java/com/example/greenwatch/viewmodels/ViewModelInterface.java

@@ -1,5 +1,8 @@
 package com.example.greenwatch.viewmodels;
 
+import android.content.Context;
+import android.view.SurfaceHolder;
+
 import androidx.lifecycle.LiveData;
 
 import com.example.greenwatch.models.Device;
@@ -7,11 +10,11 @@ import com.example.greenwatch.models.Device;
 import java.util.List;
 
 public interface ViewModelInterface {
-    void init();
+    void init(SurfaceHolder previewHolder);
     LiveData<List<Device>> getConnectedDeviceList();
     LiveData<List<Device>> getAlarmHistoryList();
     LiveData<Boolean> getStartAlarmRecording();
-    void updateDevice(String deviceID, String timeStamp, boolean sensorStatus, String sensorType, int sensorMassage);
+    void updateDevice(String deviceID, String timeStamp, boolean sensorStatus, String sensorType, float sensorMassage);
     void setTimeStamp(String deviceID, String timeStamp);
     String getTimeStamp(String deviceID);
     void setDeviceID(String deviceID, String newDeviceID);
@@ -20,8 +23,11 @@ public interface ViewModelInterface {
     boolean getSensorStatus(String deviceID);
     void setSensorType(String deviceID, String sensorType);
     String getSensorType(String deviceID);
-    void setSensorMassage(String deviceID, int sensorMessage);
+    void setSensorMassage(String deviceID, float sensorMessage);
-    int getSensorMassage(String deviceID);
+    float getSensorMassage(String deviceID);
     String getLocalDeviceUUID();
     String getSystemTimeStamp();
+    void startAlarmRecording();
+    void stopAlarmRecording(Context context);
+    void setAlarmRecordingPreviewHolder(SurfaceHolder previewHolder);
 }

app/src/main/res/layout/activity_accelerometer.xml

@@ -8,11 +8,19 @@
     android:padding="10dp"
     tools:context=".AccelerometerActivity">
 
+    <SurfaceView
+        android:id="@+id/surfaceViewAccelerometer"
+        android:layout_width="1dp"
+        android:layout_height="1dp"
+        android:visibility="visible">
+    </SurfaceView>
+
     <TextView
         android:id="@+id/tvAccelerometerStatusmessage"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:text="">
+        android:textAppearance="@style/TextAppearance.AppCompat.Large"
+        android:text="Accelerometer Activity">
     </TextView>
 
     <TextView
@@ -22,13 +30,6 @@
         android:text="">
     </TextView>
 
-    <TextView
-        android:id="@+id/tvAccelerometerWarning"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:text="">
-    </TextView>
-
     <Button
         android:id="@+id/accelerometerBackToMainActivity"
         android:layout_width="match_parent"
@@ -41,6 +42,14 @@
         android:layout_height="match_parent"
         android:orientation="vertical">
 
+        <TextView
+            android:id="@+id/tvAccelerometerdeviceListRecyclerView"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:textAppearance="@style/TextAppearance.AppCompat.Large"
+            android:text="Registered Devices">
+        </TextView>
+
         <androidx.recyclerview.widget.RecyclerView
             android:id="@+id/deviceListRecyclerView"
             android:layout_width="match_parent"
@@ -49,6 +58,14 @@
             android:layout_weight="1">
         </androidx.recyclerview.widget.RecyclerView>
 
+        <TextView
+            android:id="@+id/tvAccelerometeralarmHistoryListRecyclerView"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:textAppearance="@style/TextAppearance.AppCompat.Large"
+            android:text="Alarm History List">
+        </TextView>
+
         <androidx.recyclerview.widget.RecyclerView
             android:id="@+id/alarmHistoryListRecyclerView"
             android:layout_width="match_parent"

app/src/main/res/layout/activity_audiodetection.xml

@@ -8,13 +8,28 @@
     android:padding="10dp"
     tools:context=".AudiodetectionActivity">
 
+    <SurfaceView
+        android:id="@+id/surfaceViewAudio"
+        android:layout_width="1dp"
+        android:layout_height="1dp"
+        android:visibility="visible">
+    </SurfaceView>
+
     <TextView
         android:id="@+id/tvAudiodetectionStatusmessage"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
+        android:textAppearance="@style/TextAppearance.AppCompat.Large"
         android:text="Audiodetection Activity">
     </TextView>
 
+    <TextView
+        android:id="@+id/tvAudiodetectionData"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="">
+    </TextView>
+
     <Button
         android:id="@+id/audiodetectorBackToMainActivity"
         android:layout_width="match_parent"
@@ -22,4 +37,43 @@
         android:text="Back to MainActivity">
     </Button>
 
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical">
+
+        <TextView
+            android:id="@+id/tvAudiodetectionDeviceListRecyclerView"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:textAppearance="@style/TextAppearance.AppCompat.Large"
+            android:text="Registered Devices">
+        </TextView>
+
+        <androidx.recyclerview.widget.RecyclerView
+            android:id="@+id/deviceListRecyclerView"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            tools:listitem="@layout/device_item"
+            android:layout_weight="1">
+        </androidx.recyclerview.widget.RecyclerView>
+
+        <TextView
+            android:id="@+id/tvAudiodetectionAlarmHistoryListRecyclerView"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:textAppearance="@style/TextAppearance.AppCompat.Large"
+            android:text="Alarm History List">
+        </TextView>
+
+        <androidx.recyclerview.widget.RecyclerView
+            android:id="@+id/alarmHistoryListRecyclerView"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            tools:listitem="@layout/alarm_history_item"
+            android:layout_weight="1">
+        </androidx.recyclerview.widget.RecyclerView>
+
+    </LinearLayout>
+
 </LinearLayout>

app/src/main/res/layout/activity_audiodetection_and_accelerometer.xml

@@ -8,11 +8,19 @@
     android:padding="10dp"
     tools:context=".AudiodetectionAndAccelerometerActivity">
 
+    <SurfaceView
+        android:id="@+id/surfaceViewAudiodetectionAndAccelerometer"
+        android:layout_width="1dp"
+        android:layout_height="1dp"
+        android:visibility="visible">
+    </SurfaceView>
+
     <TextView
         android:id="@+id/tvAudiodetectionAndAccelerometerStatusmessage"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:text="Audiodetection + Accelerometer Activity">
+        android:textAppearance="@style/TextAppearance.AppCompat.Large"
+        android:text="Audiodetection+Accelerometer Activity">
     </TextView>
 
     <Button
@@ -22,4 +30,43 @@
         android:text="Back to MainActivity">
     </Button>
 
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical">
+
+        <TextView
+            android:id="@+id/tvAudiodetectionAndAccelerometerDeviceListRecyclerView"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:textAppearance="@style/TextAppearance.AppCompat.Large"
+            android:text="Registered Devices">
+        </TextView>
+
+        <androidx.recyclerview.widget.RecyclerView
+            android:id="@+id/deviceListRecyclerView"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            tools:listitem="@layout/device_item"
+            android:layout_weight="1">
+        </androidx.recyclerview.widget.RecyclerView>
+
+        <TextView
+            android:id="@+id/tvAudiodetectionAndAccelerometerAlarmHistoryListRecyclerView"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:textAppearance="@style/TextAppearance.AppCompat.Large"
+            android:text="Alarm History List">
+        </TextView>
+
+        <androidx.recyclerview.widget.RecyclerView
+            android:id="@+id/alarmHistoryListRecyclerView"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            tools:listitem="@layout/alarm_history_item"
+            android:layout_weight="1">
+        </androidx.recyclerview.widget.RecyclerView>
+
+    </LinearLayout>
+
 </LinearLayout>

app/src/main/res/layout/activity_main.xml

@@ -5,9 +5,33 @@
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical"
-    android:padding="10dp"
+    android:padding="5dp"
     tools:context=".MainActivity">
 
+    <TextView
+        android:id="@+id/tvMainActivityDeviceListRecyclerView"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:textAppearance="@style/TextAppearance.AppCompat.Large"
+        android:text="Registered Devices">
+    </TextView>
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/deviceListRecyclerView"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_weight="3"
+        tools:listitem="@layout/device_item">
+    </androidx.recyclerview.widget.RecyclerView>
+
+    <TextView
+        android:id="@+id/tvMainActivityAlarmHistoryListRecyclerView"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:textAppearance="@style/TextAppearance.AppCompat.Large"
+        android:text="Alarm History List">
+    </TextView>
+
     <androidx.recyclerview.widget.RecyclerView
         android:id="@+id/alarmHistoryListRecyclerView"
         android:layout_width="match_parent"
@@ -16,67 +40,90 @@
         tools:listitem="@layout/alarm_history_item">
     </androidx.recyclerview.widget.RecyclerView>
 
-    <androidx.recyclerview.widget.RecyclerView
+    <SurfaceView
-        android:id="@+id/deviceListRecyclerView"
+        android:id="@+id/surfaceViewMainActivity"
-        android:layout_width="match_parent"
+        android:layout_width="1dp"
-        android:layout_height="match_parent"
+        android:layout_height="1dp">
-        android:layout_weight="3"
+    </SurfaceView>
-        tools:listitem="@layout/device_item">
+
-    </androidx.recyclerview.widget.RecyclerView>
-    
     <LinearLayout
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:orientation="vertical"
         android:layout_weight="3">
 
-        <Button
+        <LinearLayout
-            android:id="@+id/audiodetectionButton"
             android:layout_width="match_parent"
-            android:layout_height="wrap_content"
+            android:layout_height="match_parent"
-            android:layout_weight="1"
+            android:orientation="horizontal"
-            android:text="Audiodetection">
+            android:layout_weight="1">
-        </Button>
 
-        <Button
+            <Button
-            android:id="@+id/videodetectionButton"
+                android:id="@+id/audiodetectionButton"
-            android:layout_width="match_parent"
+                android:layout_width="match_parent"
-            android:layout_height="wrap_content"
+                android:layout_height="wrap_content"
-            android:layout_weight="1"
+                android:layout_marginEnd="2dp"
-            android:text="Videodetection">
+                android:layout_gravity="center_vertical"
-        </Button>
+                android:layout_weight="1"
+                android:text="Audiodetection">
+            </Button>
 
-        <Button
+            <Button
-            android:id="@+id/accelerometerButton"
+                android:id="@+id/videodetectionButton"
-            android:layout_width="match_parent"
+                android:layout_width="match_parent"
-            android:layout_height="wrap_content"
+                android:layout_height="wrap_content"
-            android:layout_weight="1"
+                android:layout_marginStart="2dp"
-            android:text="Accelerometer">
+                android:layout_gravity="center_vertical"
-        </Button>
+                android:layout_weight="1"
+                android:text="Videodetection">
+            </Button>
 
-        <Button
+        </LinearLayout>
-            android:id="@+id/audiodetectionAndAccelerometerButton"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:layout_weight="1"
-            android:text="Audiodetection + Accelerometer">
-        </Button>
 
-        <Button
+        <LinearLayout
-            android:id="@+id/videodetectionAndAccelerometerButton"
             android:layout_width="match_parent"
-            android:layout_height="wrap_content"
+            android:layout_height="match_parent"
-            android:layout_weight="1"
+            android:orientation="horizontal"
-            android:text="Videodetection + Accelerometer">
+            android:layout_weight="1">
-        </Button>
 
-        <Button
+            <Button
-            android:id="@+id/connectionButton"
+                android:id="@+id/accelerometerButton"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_gravity="center_vertical"
+                android:layout_weight="1"
+                android:text="Accelerometer">
+            </Button>
+
+        </LinearLayout>
+
+        <LinearLayout
             android:layout_width="match_parent"
-            android:layout_height="wrap_content"
+            android:layout_height="match_parent"
-            android:layout_weight="1"
+            android:orientation="horizontal"
-            android:text="Connect to Devices">
+            android:layout_weight="1">
-        </Button>
+
+            <Button
+                android:id="@+id/audiodetectionAndAccelerometerButton"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginEnd="2dp"
+                android:layout_gravity="center_vertical"
+                android:layout_weight="1"
+                android:text="Audiodetection + Accelerometer">
+            </Button>
+
+            <Button
+                android:id="@+id/videodetectionAndAccelerometerButton"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginStart="2dp"
+                android:layout_gravity="center_vertical"
+                android:layout_weight="1"
+                android:text="Videodetection + Accelerometer">
+            </Button>
+
+        </LinearLayout>
 
     </LinearLayout>
 

app/src/main/res/layout/activity_videodetection.xml

@@ -8,10 +8,18 @@
     android:padding="10dp"
     tools:context=".VideodetectionActivity">
 
+    <SurfaceView
+        android:id="@+id/surfaceViewVideodetection"
+        android:layout_width="1dp"
+        android:layout_height="1dp"
+        android:visibility="visible">
+    </SurfaceView>
+
     <TextView
         android:id="@+id/tvVideodetectionStatusmessage"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
+        android:textAppearance="@style/TextAppearance.AppCompat.Large"
         android:text="Videodetection Activity">
     </TextView>
 
@@ -27,6 +35,14 @@
         android:layout_height="match_parent"
         android:orientation="vertical">
 
+        <TextView
+            android:id="@+id/tvVideodetectionDeviceListRecyclerView"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:textAppearance="@style/TextAppearance.AppCompat.Large"
+            android:text="Registered Devices">
+        </TextView>
+
         <androidx.recyclerview.widget.RecyclerView
             android:id="@+id/deviceListRecyclerView"
             android:layout_width="match_parent"
@@ -35,6 +51,14 @@
             android:layout_weight="1">
         </androidx.recyclerview.widget.RecyclerView>
 
+        <TextView
+            android:id="@+id/tvVideodetectionAlarmHistoryListRecyclerView"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:textAppearance="@style/TextAppearance.AppCompat.Large"
+            android:text="Alarm History List">
+        </TextView>
+
         <androidx.recyclerview.widget.RecyclerView
             android:id="@+id/alarmHistoryListRecyclerView"
             android:layout_width="match_parent"

app/src/main/res/layout/activity_videodetection_and_accelerometer.xml

@@ -8,11 +8,19 @@
     android:padding="10dp"
     tools:context=".VideodetectionAndAccelerometerActivity">
 
+    <SurfaceView
+        android:id="@+id/surfaceViewVideodetectionAndAccelerometer"
+        android:layout_width="1dp"
+        android:layout_height="1dp"
+        android:visibility="visible">
+    </SurfaceView>
+
     <TextView
         android:id="@+id/tvvideodetectionAndAccelerometerStatusmessage"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:text="">
+        android:textAppearance="@style/TextAppearance.AppCompat.Large"
+        android:text="Videodetection+Accelerometer Activity">
     </TextView>
 
     <TextView
@@ -22,13 +30,6 @@
         android:text="">
     </TextView>
 
-    <TextView
-        android:id="@+id/tvvideodetectionAndAccelerometerWarning"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:text="">
-    </TextView>
-
     <Button
         android:id="@+id/videodetectionAndAccelerometerBackToMainActivity"
         android:layout_width="match_parent"
@@ -41,6 +42,14 @@
         android:layout_height="match_parent"
         android:orientation="vertical">
 
+        <TextView
+            android:id="@+id/tvVideodetectionAndAccelerometerDeviceListRecyclerView"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:textAppearance="@style/TextAppearance.AppCompat.Large"
+            android:text="Registered Devices">
+        </TextView>
+
         <androidx.recyclerview.widget.RecyclerView
             android:id="@+id/deviceListRecyclerView"
             android:layout_width="match_parent"
@@ -49,6 +58,14 @@
             android:layout_weight="1">
         </androidx.recyclerview.widget.RecyclerView>
 
+        <TextView
+            android:id="@+id/tvVideodetectionAndAccelerometerAlarmHistoryListRecyclerView"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:textAppearance="@style/TextAppearance.AppCompat.Large"
+            android:text="Alarm History List">
+        </TextView>
+
         <androidx.recyclerview.widget.RecyclerView
             android:id="@+id/alarmHistoryListRecyclerView"
             android:layout_width="match_parent"

app/src/main/res/values/strings.xml

@@ -4,5 +4,5 @@
     <string name="sensor_status_placeholder">Sensorstatus: %s</string>
     <string name="deviceID_placeholder">Sensor-ID: %s</string>
     <string name="sensor_time_stamp_placeholder">Timestamp: %s</string>
-    <string name="sensor_message_placeholder">Sensormessage: %d</string>
+    <string name="sensor_message_placeholder">Sensormessage: %f</string>
 </resources>