Runnable test implementation

app/build.gradle

@@ -35,10 +35,4 @@ dependencies {
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.ext:junit:1.1.5'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
-
-    def camerax_version = "1.2.3"
-    implementation "androidx.camera:camera-camera2:${camerax_version}"
-    implementation "androidx.camera:camera-lifecycle:${camerax_version}"
-    implementation "androidx.camera:camera-view:${camerax_version}"
-
 }

app/src/main/AndroidManifest.xml

@@ -3,9 +3,11 @@
     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-feature android:name="android.hardware.camera"/>
+    <uses-permission android:name="android.permission.READ_MEDIA_VIDEO" />
+    <uses-permission android:name="android.permission.RECORD_AUDIO" />
+    <uses-permission android:name="android.permission.CAMERA" />
 
     <application
         android:allowBackup="true"

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

@@ -70,6 +70,7 @@ public class AccelerometerActivity extends AppCompatActivity implements SensorEv
             @Override
             public void onChanged(List<Device> devices) {
                 deviceListAdapter.setDevices(devices);
+                Toast.makeText(AccelerometerActivity.this, "onChanged", Toast.LENGTH_LONG).show();
             }
         });
 
@@ -80,18 +81,6 @@ public class AccelerometerActivity extends AppCompatActivity implements SensorEv
             }
         });
 
-        mAccelerometerViewModel.getStartAlarmRecording().observe(this, new Observer<Boolean>() {
-            @Override
-            public void onChanged(Boolean aBoolean) {
-                if (aBoolean) {
-                    Toast.makeText(AccelerometerActivity.this, "Start Alarm Recording", Toast.LENGTH_LONG).show();
-                }
-                else {
-                    Toast.makeText(AccelerometerActivity.this, "Stop Alarm Recording", Toast.LENGTH_LONG).show();
-                }
-            }
-        });
-
         mAccelerometerViewModel.getMovementDetectedValue().observe(this, new Observer<Boolean>() {
             @Override
             public void onChanged(Boolean aBoolean) {

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

@@ -57,11 +57,11 @@ public class MainActivity extends AppCompatActivity {
 
         mMainActivityViewModel = new ViewModelProvider(this).get(MainActivityViewModel.class);
         mMainActivityViewModel.init();
-        mMainActivityViewModel.accessRequestCamera(this);
         mMainActivityViewModel.getConnectedDeviceList().observe(this, new Observer<List<Device>>() {
             @Override
             public void onChanged(List<Device> devices) {
                 deviceListAdapter.setDevices(devices);
+                Toast.makeText(MainActivity.this, "onChanged", Toast.LENGTH_LONG).show();
             }
         });
 
@@ -72,18 +72,6 @@ public class MainActivity extends AppCompatActivity {
             }
         });
 
-        mMainActivityViewModel.getStartAlarmRecording().observe(this, new Observer<Boolean>() {
-            @Override
-            public void onChanged(Boolean aBoolean) {
-                if (aBoolean) {
-                    Toast.makeText(MainActivity.this, "Start Alarm Recording", Toast.LENGTH_LONG).show();
-                }
-                else {
-                    Toast.makeText(MainActivity.this, "Stop Alarm Recording", Toast.LENGTH_LONG).show();
-                }
-            }
-        });
-
         audiodetectionButton.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
@@ -94,12 +82,10 @@ public class MainActivity extends AppCompatActivity {
         videodetectionButton.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
-                if (mMainActivityViewModel.isCameraAccessAllowed(MainActivity.this)) {
+                //openVideodetectionActivity();
-                    openVideodetectionActivity();
+                mMainActivityViewModel.setSensorType(mMainActivityViewModel.getLocalDeviceUUID(), "Video");
-                }
+                mMainActivityViewModel.setTimeStamp(mMainActivityViewModel.getLocalDeviceUUID(), "12:50");
-                else {
+                mMainActivityViewModel.setDeviceID(mMainActivityViewModel.getLocalDeviceUUID(), "12345");
-                    mMainActivityViewModel.accessRequestCamera(MainActivity.this);
-                }
             }
         });
         accelerometerButton.setOnClickListener(new View.OnClickListener() {
@@ -148,8 +134,9 @@ public class MainActivity extends AppCompatActivity {
         startActivity(intent);
     }
     public void openVideodetectionAndAccelerometerActivity(){
-        Intent intent = new Intent(this, VideodetectionAndAccelerometerActivity.class);
+        //Intent intent = new Intent(this, VideodetectionAndAccelerometerActivity.class);
-        startActivity(intent);
+        //startActivity(intent);
+        mMainActivityViewModel.updateDevice(mMainActivityViewModel.getLocalDeviceUUID(), "24:00",  false, "Video", 0);
     }
     public void openConnectionActivity(){
         //Intent intent = new Intent(this, ConnectionActivity.class);

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

@@ -1,32 +1,14 @@
 package com.example.greenwatch;
 
 import androidx.appcompat.app.AppCompatActivity;
-import androidx.camera.lifecycle.ProcessCameraProvider;
-import androidx.core.content.ContextCompat;
-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.View;
 import android.widget.Button;
-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;
-
-import java.util.List;
-import java.util.concurrent.ExecutionException;
 
 public class VideodetectionActivity extends AppCompatActivity {
 
     private Button backToMainActivity;
-    private VideodetectionViewModel mVideoDetectionViewModel;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -35,75 +17,11 @@ public class VideodetectionActivity extends AppCompatActivity {
 
         backToMainActivity = (Button) findViewById(R.id.videodetectorBackToMainActivity);
 
-        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();
             }
         });
-
-        mVideoDetectionViewModel = new ViewModelProvider(this).get(VideodetectionViewModel.class);
-        mVideoDetectionViewModel.init();
-        mVideoDetectionViewModel.getConnectedDeviceList().observe(this, new Observer<List<Device>>() {
-            @Override
-            public void onChanged(List<Device> devices) {
-                deviceListAdapter.setDevices(devices);
-            }
-        });
-
-        mVideoDetectionViewModel.getAlarmHistoryList().observe(this, new Observer<List<Device>>() {
-            @Override
-            public void onChanged(List<Device> devices) {
-                alarmHistoryListAdapter.setAlarmHistoryList(devices);
-            }
-        });
-
-        mVideoDetectionViewModel.getStartAlarmRecording().observe(this, new Observer<Boolean>() {
-            @Override
-            public void onChanged(Boolean aBoolean) {
-                if (aBoolean) {
-                    Toast.makeText(VideodetectionActivity.this, "Start Alarm Recording", Toast.LENGTH_LONG).show();
-                }
-                else {
-                    Toast.makeText(VideodetectionActivity.this, "Stop Alarm Recording", Toast.LENGTH_LONG).show();
-                }
-            }
-        });
-
-        mVideoDetectionViewModel.getVideoAlarmDetectedValue().observe(this, new Observer<Boolean>() {
-            @Override
-            public void onChanged(Boolean aBoolean) {
-                if (aBoolean) {
-                    mVideoDetectionViewModel.updateDevice(mVideoDetectionViewModel.getLocalDeviceUUID(), mVideoDetectionViewModel.getSystemTimeStamp(), true, "Video", 10);
-                }
-                else {
-                    mVideoDetectionViewModel.updateDevice(mVideoDetectionViewModel.getLocalDeviceUUID(), mVideoDetectionViewModel.getSystemTimeStamp(), false, "Video", 0);
-                }
-
-            }
-        });
-
-        final ListenableFuture<ProcessCameraProvider> cameraProviderFuture = ProcessCameraProvider.getInstance(this);
-        cameraProviderFuture.addListener(() -> {
-            try {
-                mVideoDetectionViewModel.bindImageAnalysis(cameraProviderFuture.get(), this, this);
-            } catch (ExecutionException | InterruptedException e) {
-                e.printStackTrace();
-            }
-        }, ContextCompat.getMainExecutor(this));
     }
 }

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

@@ -1,171 +1,27 @@
 package com.example.greenwatch;
 
 import androidx.appcompat.app.AppCompatActivity;
-import androidx.camera.lifecycle.ProcessCameraProvider;
-import androidx.core.content.ContextCompat;
-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.View;
 import android.widget.Button;
-import android.widget.TextView;
-import android.widget.Toast;
 
-import com.example.greenwatch.adapters.AlarmHistoryListAdapter;
+public class VideodetectionAndAccelerometerActivity extends AppCompatActivity {
-import com.example.greenwatch.adapters.DeviceListAdapter;
-import com.example.greenwatch.models.Device;
-import com.example.greenwatch.viewmodels.AccelerometerViewModel;
-import com.example.greenwatch.viewmodels.VideodetectionAndAccelerometerViewModel;
-import com.example.greenwatch.viewmodels.VideodetectionViewModel;
-import com.google.common.util.concurrent.ListenableFuture;
 
-import java.util.List;
-import java.util.concurrent.ExecutionException;
-
-public class VideodetectionAndAccelerometerActivity extends AppCompatActivity implements SensorEventListener {
-    private SensorManager accelerometerManager;
-    private Sensor accelerometerSensor;
-    private TextView videodetectionAndAccelerometerStatusMessage;
-    private TextView videodetectionAndAccelerometerDataTV;
-    private TextView videodetectionAndAccelerometerWarningTV;
     private Button backToMainActivity;
-    private VideodetectionAndAccelerometerViewModel mVideodetectionAndAccelerometerViewModel;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_videodetection_and_accelerometer);
 
-        videodetectionAndAccelerometerStatusMessage = (TextView) findViewById(R.id.tvvideodetectionAndAccelerometerStatusmessage);
-        videodetectionAndAccelerometerDataTV = (TextView) findViewById(R.id.tvvideodetectionAndAccelerometerData);
-        videodetectionAndAccelerometerWarningTV = (TextView) findViewById(R.id.tvvideodetectionAndAccelerometerWarning);
         backToMainActivity = (Button) findViewById(R.id.videodetectionAndAccelerometerBackToMainActivity);
 
-        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();
             }
         });
-
-        mVideodetectionAndAccelerometerViewModel = new ViewModelProvider(this).get(VideodetectionAndAccelerometerViewModel.class);
-        mVideodetectionAndAccelerometerViewModel.init();
-        mVideodetectionAndAccelerometerViewModel.getConnectedDeviceList().observe(this, new Observer<List<Device>>() {
-            @Override
-            public void onChanged(List<Device> devices) {
-                deviceListAdapter.setDevices(devices);
-            }
-        });
-
-        mVideodetectionAndAccelerometerViewModel.getAlarmHistoryList().observe(this, new Observer<List<Device>>() {
-            @Override
-            public void onChanged(List<Device> devices) {
-                alarmHistoryListAdapter.setAlarmHistoryList(devices);
-            }
-        });
-
-        mVideodetectionAndAccelerometerViewModel.getStartAlarmRecording().observe(this, new Observer<Boolean>() {
-            @Override
-            public void onChanged(Boolean aBoolean) {
-                if (aBoolean) {
-                    Toast.makeText(VideodetectionAndAccelerometerActivity.this, "Start Alarm Recording", Toast.LENGTH_LONG).show();
-                }
-                else {
-                    Toast.makeText(VideodetectionAndAccelerometerActivity.this, "Stop Alarm Recording", Toast.LENGTH_LONG).show();
-                }
-            }
-        });
-
-        mVideodetectionAndAccelerometerViewModel.getVideodetectionAndAccelerometerAlarmDetected().observe(this, new Observer<Boolean>() {
-            @Override
-            public void onChanged(Boolean aBoolean) {
-                if (aBoolean) {
-                    mVideodetectionAndAccelerometerViewModel.updateDevice(mVideodetectionAndAccelerometerViewModel.getLocalDeviceUUID(), mVideodetectionAndAccelerometerViewModel.getSystemTimeStamp(), true, "Accelerometer", 10);
-                }
-                else {
-                    mVideodetectionAndAccelerometerViewModel.updateDevice(mVideodetectionAndAccelerometerViewModel.getLocalDeviceUUID(), mVideodetectionAndAccelerometerViewModel.getSystemTimeStamp(), false, "Accelerometer", 0);
-                }
-
-            }
-        });
-
-        final ListenableFuture<ProcessCameraProvider> cameraProviderFuture = ProcessCameraProvider.getInstance(this);
-        cameraProviderFuture.addListener(() -> {
-            try {
-                mVideodetectionAndAccelerometerViewModel.bindImageAnalysis(cameraProviderFuture.get(), this, this);
-            } catch (ExecutionException | InterruptedException e) {
-                e.printStackTrace();
-            }
-        }, ContextCompat.getMainExecutor(this));
-
-        accelerometerManager = (SensorManager) getSystemService(SENSOR_SERVICE);
-        if (accelerometerManager.getSensorList(Sensor.TYPE_GYROSCOPE).size() == 0) {
-            accelerometerSensor = null;
-            Toast.makeText(VideodetectionAndAccelerometerActivity.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]);
-        videodetectionAndAccelerometerDataTV.setText(sb.toString());
-        mVideodetectionAndAccelerometerViewModel.addValueToGesamtBE(event.values[0] + event.values[1] + event.values[2]);
-        mVideodetectionAndAccelerometerViewModel.meanValueCalculation();
-        mVideodetectionAndAccelerometerViewModel.calibrateAccelerometerSensor();
-        mVideodetectionAndAccelerometerViewModel.checkAlarmCondition();
-    }
-
-    @Override
-    public void onAccuracyChanged(Sensor sensor, int accuracy) {
-
-    }
-    @Override
-    protected void onResume() {
-        super.onResume();
-        if (accelerometerSensor != null) {
-            if (accelerometerManager.registerListener(this, accelerometerSensor, SensorManager.SENSOR_DELAY_GAME)) {
-                Toast.makeText(VideodetectionAndAccelerometerActivity.this, "We registered to the sensor", Toast.LENGTH_LONG).show();
-            } else {
-                Toast.makeText(VideodetectionAndAccelerometerActivity.this, "Registration did not work", Toast.LENGTH_LONG).show();
-            }
-        }
-    }
-
-    @Override
-    protected void onPause() {
-        super.onPause();
-        if (accelerometerSensor != null) {
-            accelerometerManager.unregisterListener(this, accelerometerSensor);
-        }
     }
 }

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

@@ -0,0 +1,246 @@
+package com.example.greenwatch.alarmrecorder;
+
+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.widget.Toast;
+
+import com.example.greenwatch.MainActivity;
+import com.example.greenwatch.alarmrecorder.runnables.AudioRecorder;
+import com.example.greenwatch.alarmrecorder.runnables.VideoRecorder;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.ByteBuffer;
+
+public class AlarmRecorder {
+
+    private boolean isRecording;
+    private String videoPath;
+    private String audioPath;
+    private MediaFormat videoFormat;
+    private MediaFormat audioFormat;
+    private MediaExtractor videoExtractor;
+    private MediaExtractor audioExtractor;
+    private Runnable audioRecorderRunnable;
+    private Runnable videoRecorderRunnable;
+    private MediaRecorder videoRecorder;
+    private MediaRecorder audioRecorder;
+    private Thread videoThread; // Video-Thread als Instanzvariable
+    private Thread audioThread; // Audio-Thread als Instanzvariable
+
+    public AlarmRecorder() {
+        audioRecorder = new MediaRecorder();
+        videoRecorder = new MediaRecorder();
+        videoExtractor = new MediaExtractor();
+        audioExtractor = new MediaExtractor();
+    }
+
+
+    private void startRecording() {
+        createStoragePaths(); //Speicherort und -namen für Audio- und Video-Datei
+
+        audioRecorderRunnable = new AudioRecorder(audioRecorder, audioPath);
+        videoRecorderRunnable = new VideoRecorder(videoRecorder, videoPath);
+        audioThread = new Thread(audioRecorderRunnable);
+        videoThread = new Thread(videoRecorderRunnable);
+
+        //Threads starten
+        videoThread.start();
+        audioThread.start();
+    }
+
+    private void stopRecording() {
+        isRecording = false;
+        try {
+            stopVideoRecording();
+            stopAudioRecording();
+
+            runOnUiThread(new Runnable() {
+                @Override
+                public void run() {
+                    Toast.makeText(MainActivity.this, "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();
+            } else {
+                Toast.makeText(MainActivity.this, "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
+        isRecording = true;
+        String externalStorageDirectory = Environment.getExternalStorageDirectory().getAbsolutePath();
+        String dcimDirectory = externalStorageDirectory + "/DCIM";
+        videoPath = dcimDirectory + "/video.mp4";
+        audioPath = dcimDirectory + "/audio.mp3";
+    }
+
+    private void stopVideoRecording(){
+        if (videoRecorder != null) {
+            videoRecorder.stop();
+            videoRecorder.release();
+            videoRecorder = null;
+        }
+    }
+
+    private void stopAudioRecording(){
+        if (audioRecorder != null) {
+            audioRecorder.stop();
+            audioRecorder.release();
+            audioRecorder = null;
+        }
+    }
+
+    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();
+
+            runOnUiThread(new Runnable() {
+                @Override
+                public void run() {
+                    Toast.makeText(MainActivity.this, "Video und Audio erfolgreich zusammengeführt", Toast.LENGTH_SHORT).show();
+                }
+            });
+
+            // 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 +1,33 @@
+package com.example.greenwatch.alarmrecorder.runnables;
+
+import android.media.MediaRecorder;
+import android.widget.Toast;
+
+import com.example.greenwatch.MainActivity;
+
+import java.io.IOException;
+
+public class AudioRecorder implements Runnable {
+
+    private final MediaRecorder audioRecorder;
+    private final String audioPath;
+    public AudioRecorder(MediaRecorder audioRecorder, String audioPath) {
+        this.audioRecorder = audioRecorder;
+        this.audioPath = audioPath;
+    }
+    @Override
+    public void run() {
+        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 +1,35 @@
+package com.example.greenwatch.alarmrecorder.runnables;
+
+import android.media.MediaRecorder;
+
+import com.example.greenwatch.viewmodels.ViewModelInterface;
+
+import java.io.IOException;
+
+public class VideoRecorder implements Runnable{
+    private final MediaRecorder videoRecorder;
+    private final String videoPath;
+
+    public VideoRecorder(MediaRecorder videoRecorder, String videoPath) {
+        this.videoRecorder = videoRecorder;
+        this.videoPath = videoPath;
+    }
+    @Override
+    public void run() {
+        videoRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
+        videoRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
+        videoRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.DEFAULT);
+        videoRecorder.setOutputFile(videoPath);
+        videoRecorder.setOrientationHint(90);
+        //todo find solution for videoView
+        videoRecorder.setPreviewDisplay(videoView.getHolder().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;
@@ -58,6 +56,23 @@ 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();
@@ -74,7 +89,7 @@ public class WiFiCommunication {
                     {
                         isNewMessage = false;
                         //todo: adapt send String
-                        String txString = sendMessage;
+                        String txString = getLocalIpAddress() + " sends. #" + tmpCnt++ + sendMessage;
                         byte[] txBuffer = txString.getBytes();
 
                         DatagramPacket txPacket = new DatagramPacket(txBuffer, txBuffer.length, address, port);

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

@@ -1,21 +1,14 @@
 package com.example.greenwatch.repositories;
 
 
-import android.util.Log;
-
 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;
@@ -24,12 +17,10 @@ public class DeviceRepository {
 
     private final int maxAlarmHistoryListSize = 20;
     private final String delimiter = ", ";
-    private final String sensorStatusKey = "An";
+    private final String SensorStatusKey = "An";
     private String localDeviceUUID;
     private static DeviceRepository deviceRepositoryInstance;
     private WiFiCommunication mWiFiCommunication;
-    private boolean startAlarmRecordingValue;
-    private MutableLiveData<Boolean> startAlarmRecording = new MutableLiveData<>();
     private MutableLiveData<List<Device>> deviceList = new MutableLiveData<>();
     private MutableLiveData<List<Device>> alarmHistoryList = new MutableLiveData<>();
     private HashMap<String, Device> connectedDevicesList = new HashMap<>();
@@ -38,7 +29,6 @@ public class DeviceRepository {
 
     private DeviceRepository() {
         setLocalDeviceUUID();
-        startAlarmRecordingValue = false;
     }
 
     public static synchronized DeviceRepository getInstance() {
@@ -62,44 +52,32 @@ public class DeviceRepository {
         return alarmHistoryList;
     }
 
-    public MutableLiveData<Boolean> getStartAlarmRecording() {
-        setMutableLiveDataStartAlarmRecording();
-        return startAlarmRecording;
-    }
-
     public void createNewDevice(String timeStamp, String deviceID, boolean sensorStatus, String sensorType, int sensorMassage){
         Device newDevice = new Device(timeStamp, deviceID, sensorStatus, sensorType, sensorMassage);
         if (sensorStatus) {
             setAlarmHistoryDeviceList(newDevice);
         }
-        boolean newStartAlarmRecordingValue = checkDeviceStatus();
-        if (startAlarmRecordingValue != newStartAlarmRecordingValue) {
-            startAlarmRecordingValue = newStartAlarmRecordingValue;
-            setMutableLiveDataStartAlarmRecording();
-        }
         addToConnectedDeviceList(newDevice.getDeviceID(), newDevice);
         setMutableLiveDataDeviceList();
     }
 
     public void getNewReceivedMessage(String newMessage) {
         String[] messageString = messageStringSplitter(newMessage);
-        if(messageString[0]=="1" && messageString.length == 7){
+        String timeStamp = messageString[0];
-            String timeStamp = messageString[1];
+        String deviceID = messageString[1];
-            String deviceID = messageString[3];
+        boolean sensorStatus = convertSensorStatus(messageString[2]);
-            boolean sensorStatus = convertSensorStatus(messageString[4]);
+        String sensorType = messageString[3];
-            String sensorType = messageString[5];
+        int sensorMassage = Integer.valueOf(messageString[4]);
-            int sensorMassage = Integer.valueOf(messageString[6]);
 
-            if (deviceID.equals(checkDeviceID(localDeviceUUID))) {
+        if (deviceID.equals(checkDeviceID(localDeviceUUID))) {
-                return;
+            return;
-            }
+        }
 
-            if(!connectedDevicesList.containsKey(deviceID)) {
+        if(!connectedDevicesList.containsKey(deviceID)) {
-                createNewDevice(timeStamp, deviceID, sensorStatus, sensorType, sensorMassage);
+            createNewDevice(timeStamp, deviceID, sensorStatus, sensorType, sensorMassage);
-            }
+        }
-            else {
+        else {
-                updateDevice(deviceID, timeStamp, sensorStatus, sensorType, sensorMassage);
+            updateDevice(deviceID, timeStamp, sensorStatus, sensorType, sensorMassage);
-            }
         }
     }
 
@@ -107,14 +85,9 @@ public class DeviceRepository {
         StringBuilder message = new StringBuilder();
         Device device = connectedDevicesList.get(deviceID);
         if(device != null) {
-            message.append("1")
+            message.append(device.getTimeStamp())
                     .append(delimiter)
-                    .append(device.getTimeStamp())
+                    .append(device.getDeviceID())
-                    .append(delimiter)
-                    .append("Gruppe3")
-                    .append(delimiter)
-                    //.append(device.getDeviceID())
-                    .append(getLocalIpAddress(deviceID))
                     .append(delimiter)
                     .append(device.getSensorStatus())
                     .append(delimiter)
@@ -131,10 +104,6 @@ public class DeviceRepository {
                     .append(delimiter)
                     .append("")
                     .append(delimiter)
-                    .append("")
-                    .append(delimiter)
-                    .append("")
-                    .append(delimiter)
                     .append("");
         }
         return message.toString();
@@ -155,11 +124,6 @@ public class DeviceRepository {
                 setAlarmHistoryDeviceList(device);
             }
             device.setSensorStatus(sensorStatus);
-            boolean newStartAlarmRecordingValue = checkDeviceStatus();
-            if (startAlarmRecordingValue != newStartAlarmRecordingValue) {
-                startAlarmRecordingValue = newStartAlarmRecordingValue;
-                setMutableLiveDataStartAlarmRecording();
-            }
             addToConnectedDeviceList(checkedDeviceID, device);
             setMutableLiveDataDeviceList();
         }
@@ -213,11 +177,6 @@ public class DeviceRepository {
                 setAlarmHistoryDeviceList(device);
             }
             device.setSensorStatus(sensorStatus);
-            boolean newStartAlarmRecordingValue = checkDeviceStatus();
-            if (startAlarmRecordingValue != newStartAlarmRecordingValue) {
-                startAlarmRecordingValue = newStartAlarmRecordingValue;
-                setMutableLiveDataStartAlarmRecording();
-            }
             addToConnectedDeviceList(checkedDeviceID, device);
             setMutableLiveDataDeviceList();
 
@@ -286,10 +245,6 @@ public class DeviceRepository {
         alarmHistoryList.setValue(alarmHistoryDeviceList);
     }
 
-    private void setMutableLiveDataStartAlarmRecording() {
-        startAlarmRecording.setValue(startAlarmRecordingValue);
-    }
-
     private void addToConnectedDeviceList(String key, Device device) {
         connectedDevicesList.put(key, device);
         if (key.equals(checkDeviceID(localDeviceUUID))) {
@@ -317,7 +272,7 @@ public class DeviceRepository {
     }
 
     private boolean convertSensorStatus(String status) {
-        return status.equals(sensorStatusKey);
+        return status.equals(SensorStatusKey);
     }
 
     private void setAlarmHistoryDeviceList(Device device) {
@@ -328,34 +283,4 @@ public class DeviceRepository {
         alarmHistoryDeviceList.add(0, alarmHistoryDevice);
         setMutableLiveDataAlarmHistoryList();
     }
-
-    private boolean checkDeviceStatus() {
-        for (Device device : connectedDevicesList.values()) {
-            if (device.getSensorStatus()) {
-                return true;
-            }
-        }
-        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

@@ -1,85 +0,0 @@
-package com.example.greenwatch.sensors;
-
-import androidx.lifecycle.MutableLiveData;
-
-import java.util.ArrayList;
-
-public class AccelerometerSensor {
-    private MutableLiveData<Boolean> mAccelerometerAlarmDetected = new MutableLiveData<>();
-    private static AccelerometerSensor accelerometerSensorInstance;
-    private boolean accelerometerAlarmDetected;
-    private ArrayList<Float> Gesamt_be;
-    int arraySize = 500;
-    int functionCallCount;
-    float meanValue;
-    float offsetValue;
-    float thresholdValue;
-    boolean startMeasuring;
-
-    private AccelerometerSensor() {
-        initGesamtBE();
-        accelerometerAlarmDetected = false;
-        setMutableLiveDataAccelerometerAlarmDetected();
-        functionCallCount = 0;
-        meanValue = 0.0f;
-        offsetValue = 0.1f;
-        thresholdValue = 0.15f;
-        startMeasuring = false;
-    }
-
-    public static synchronized AccelerometerSensor getInstance() {
-        if (accelerometerSensorInstance == null){
-            accelerometerSensorInstance = new AccelerometerSensor();
-        }
-        return accelerometerSensorInstance;
-    }
-
-    public MutableLiveData<Boolean> getAccelerometerAlarmDetected() {
-        setMutableLiveDataAccelerometerAlarmDetected();
-        return mAccelerometerAlarmDetected;
-    }
-
-    private void setMutableLiveDataAccelerometerAlarmDetected() {
-        mAccelerometerAlarmDetected.setValue(accelerometerAlarmDetected);
-    }
-
-    private void initGesamtBE() {
-        Gesamt_be = new ArrayList<>(arraySize);
-        for (int i = 0; i < arraySize; i++) {
-            Gesamt_be.add(0.0f);
-        }
-    }
-
-    public void addValueToGesamtBE(float newValue) {
-        if (Gesamt_be.size() == arraySize) {
-            Gesamt_be.remove(Gesamt_be.size() -1);
-        }
-        Gesamt_be.add(0, newValue);
-        functionCallCount++;
-    }
-
-    public void meanValueCalculation() {
-        for (float element : Gesamt_be) {
-            meanValue += Math.abs(element);
-        }
-        meanValue = meanValue/arraySize;
-    }
-
-    public void calibrateAccelerometerSensor() {
-        if (functionCallCount <= arraySize) {
-            offsetValue = meanValue;
-        }
-        else {
-            startMeasuring = true;
-        }
-    }
-
-    public void checkAlarmCondition() {
-        if (meanValue > (thresholdValue + offsetValue) && startMeasuring && !mAccelerometerAlarmDetected.getValue()) {
-            mAccelerometerAlarmDetected.setValue(true);
-        }
-        else if (meanValue < (thresholdValue + offsetValue) && mAccelerometerAlarmDetected.getValue()){
-            mAccelerometerAlarmDetected.setValue(false);
-        }
-    }
-}

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

@@ -1,126 +0,0 @@
-package com.example.greenwatch.sensors;
-
-import android.content.Context;
-import android.graphics.ImageFormat;
-import android.media.Image;
-import android.util.Size;
-
-import androidx.camera.core.CameraSelector;
-import androidx.camera.core.ImageAnalysis;
-import androidx.camera.lifecycle.ProcessCameraProvider;
-import androidx.core.content.ContextCompat;
-import androidx.lifecycle.LifecycleOwner;
-import androidx.lifecycle.MutableLiveData;
-
-import java.nio.ByteBuffer;
-
-public class CameraSensor {
-    private final MutableLiveData<Boolean> mVideoAlarmDetected = new MutableLiveData<>();
-    private static CameraSensor cameraSensorInstance;
-    private boolean videoAlarmDetected;
-    private ByteBuffer previousBuffer;
-    private int previousWidth;
-    private int previousHeight;
-
-    private CameraSensor() {
-        videoAlarmDetected = false;
-    }
-
-    public static synchronized CameraSensor getInstance() {
-        if (cameraSensorInstance == null){
-            cameraSensorInstance = new CameraSensor();
-        }
-        return cameraSensorInstance;
-    }
-
-    public MutableLiveData<Boolean> getVideoAlarmDetectedValue() {
-        setMutableLiveDataVideoAlarmDetected();
-        return mVideoAlarmDetected;
-    }
-
-    private void setMutableLiveDataVideoAlarmDetected() {
-        mVideoAlarmDetected.setValue(videoAlarmDetected);
-    }
-
-    public void bindImageAnalysis(ProcessCameraProvider cameraProvider, LifecycleOwner lifecycleOwner, Context context) {
-        ImageAnalysis.Builder builder = new ImageAnalysis.Builder();
-        builder.setTargetResolution(new Size(640, 480));
-        builder.setBackpressureStrategy(ImageAnalysis.STRATEGY_KEEP_ONLY_LATEST);
-        ImageAnalysis imageAnalysis = builder.build();
-        imageAnalysis.setAnalyzer(
-                ContextCompat.getMainExecutor(context),
-                imageProxy -> {
-
-                    int imageFormat = imageProxy.getFormat();
-
-                    if (imageFormat == ImageFormat.YUV_420_888) {
-
-                        Image currentImage = imageProxy.getImage();
-
-                        if (previousHeight != 0) {
-                            assert currentImage != null;
-                            videoAlarmDetected = compareFrames(currentImage);
-                        }
-
-                        assert currentImage != null;
-                        Image.Plane[] planes = currentImage.getPlanes();
-                        ByteBuffer buffer = planes[0].getBuffer().duplicate();
-                        previousBuffer = ByteBuffer.allocateDirect(buffer.remaining());
-                        previousBuffer.put(buffer);
-                        previousWidth = currentImage.getWidth();
-                        previousHeight = currentImage.getHeight();
-
-                        currentImage.close();
-
-                        checkAlarmCondition();
-
-                    }
-
-                    imageProxy.close();
-                });
-
-        CameraSelector cameraSelector = new CameraSelector.Builder().requireLensFacing(CameraSelector.LENS_FACING_BACK).build();
-
-        cameraProvider.bindToLifecycle(lifecycleOwner, cameraSelector, imageAnalysis);
-    }
-
-    private boolean compareFrames(Image currentImage) {
-
-        ByteBuffer currentBuffer = currentImage.getPlanes()[0].getBuffer();
-
-        int currentWidth = currentImage.getWidth();
-        int currentHeight = currentImage.getHeight();
-
-        if (previousWidth != currentWidth || previousHeight != currentHeight) {
-            return false;
-        }
-
-        for (int row = 0; row < previousHeight; row++) {
-            for (int col = 0; col < previousWidth; col++) {
-
-                int previousIndex = row * previousWidth + col;
-                int currentIndex = row * currentWidth + col;
-
-                int previousPixel = previousBuffer.get(previousIndex) & 0xFF;
-                int currentPixel = currentBuffer.get(currentIndex) & 0xFF;
-
-                int pixelDifference = Math.abs(previousPixel - currentPixel);
-                int threshold = 120;
-
-                if (pixelDifference > threshold) {
-                    return true;
-                }
-            }
-        }
-        return false;
-    }
-
-    public void checkAlarmCondition() {
-        if (videoAlarmDetected && !mVideoAlarmDetected.getValue()) {
-            setMutableLiveDataVideoAlarmDetected();
-        }
-        else if (!videoAlarmDetected && mVideoAlarmDetected.getValue()){
-            setMutableLiveDataVideoAlarmDetected();
-        }
-    }
-}

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

@@ -17,7 +17,6 @@ public class AccelerometerViewModel extends ViewModel implements ViewModelInterf
     private MutableLiveData<List<Device>> mDeviceList;
     private MutableLiveData<Boolean> mMovementDetected = new MutableLiveData<>();
     private MutableLiveData<List<Device>> mAlarmHistoryList;
-    private MutableLiveData<Boolean> mStartAlarmRecording;
     private DeviceRepository mDeviceRepository;
     private ArrayList<Float> Gesamt_be;
     int arraySize = 500;
@@ -33,7 +32,6 @@ public class AccelerometerViewModel extends ViewModel implements ViewModelInterf
             mDeviceRepository = DeviceRepository.getInstance();
             mDeviceList = mDeviceRepository.getConnectedDeviceList();
             mAlarmHistoryList = mDeviceRepository.getAlarmHistoryDeviceList();
-            mStartAlarmRecording = mDeviceRepository.getStartAlarmRecording();
         }
         initGesamtBE();
         mMovementDetected.setValue(false);
@@ -84,6 +82,10 @@ public class AccelerometerViewModel extends ViewModel implements ViewModelInterf
         }
     }
 
+    public String getSystemTimeStamp() {
+        return mDeviceRepository.getSystemTimeStamp();
+    }
+
     public LiveData<Boolean> getMovementDetectedValue() {
         return mMovementDetected;
     }
@@ -98,11 +100,6 @@ public class AccelerometerViewModel extends ViewModel implements ViewModelInterf
         return mAlarmHistoryList;
     }
 
-    @Override
-    public LiveData<Boolean> getStartAlarmRecording() {
-        return mStartAlarmRecording;
-    }
-
     @Override
     public void updateDevice(String deviceID, String timeStamp, boolean sensorStatus, String sensorType, int sensorMassage) {
         mDeviceRepository.updateDevice(deviceID, timeStamp, sensorStatus, sensorType, sensorMassage);
@@ -162,9 +159,4 @@ public class AccelerometerViewModel extends ViewModel implements ViewModelInterf
     public String getLocalDeviceUUID() {
         return mDeviceRepository.getLocalDeviceUUID();
     }
-
-    @Override
-    public String getSystemTimeStamp() {
-        return mDeviceRepository.getSystemTimeStamp();
-    }
 }

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

@@ -1,11 +1,5 @@
 package com.example.greenwatch.viewmodels;
 
-import android.app.Activity;
-import android.content.Context;
-import android.content.pm.PackageManager;
-
-import androidx.core.app.ActivityCompat;
-import androidx.core.content.ContextCompat;
 import androidx.lifecycle.LiveData;
 import androidx.lifecycle.MutableLiveData;
 import androidx.lifecycle.ViewModel;
@@ -20,9 +14,7 @@ public class MainActivityViewModel extends ViewModel implements ViewModelInterfa
 
     private MutableLiveData<List<Device>> mDeviceList;
     private MutableLiveData<List<Device>> mAlarmHistoryList;
-    private MutableLiveData<Boolean> mStartAlarmRecording;
     private DeviceRepository mDeviceRepository;
-    private static final int RIGHTS_REQUEST_CAMERA = 10;
 
     @Override
     public void init() {
@@ -36,17 +28,9 @@ public class MainActivityViewModel extends ViewModel implements ViewModelInterfa
         mDeviceRepository.setWiFiCommunication(mWiFiCommunication);
         mWiFiCommunication.setDeviceRepository(mDeviceRepository);
         mDeviceRepository.createNewDevice(mDeviceRepository.getSystemTimeStamp(), mDeviceRepository.getLocalDeviceUUID(), false, "No Sensor selected", 0);
+        mDeviceRepository.createNewDevice("00:00", "1234", true, "Test", 21);
         mDeviceList = mDeviceRepository.getConnectedDeviceList();
         mAlarmHistoryList = mDeviceRepository.getAlarmHistoryDeviceList();
-        mStartAlarmRecording = mDeviceRepository.getStartAlarmRecording();
-    }
-
-    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
@@ -59,11 +43,6 @@ public class MainActivityViewModel extends ViewModel implements ViewModelInterfa
         return mAlarmHistoryList;
     }
 
-    @Override
-    public LiveData<Boolean> getStartAlarmRecording() {
-        return mStartAlarmRecording;
-    }
-
     @Override
     public void updateDevice(String deviceID, String timeStamp, boolean sensorStatus, String sensorType, int sensorMassage) {
         mDeviceRepository.updateDevice(deviceID, timeStamp, sensorStatus, sensorType, sensorMassage);
@@ -123,9 +102,4 @@ public class MainActivityViewModel extends ViewModel implements ViewModelInterfa
     public String getLocalDeviceUUID() {
         return mDeviceRepository.getLocalDeviceUUID();
     }
-
-    @Override
-    public String getSystemTimeStamp() {
-        return null;
-    }
 }

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

@@ -1,196 +0,0 @@
-package com.example.greenwatch.viewmodels;
-
-import android.content.Context;
-
-import androidx.camera.lifecycle.ProcessCameraProvider;
-import androidx.lifecycle.LifecycleOwner;
-import androidx.lifecycle.LiveData;
-import androidx.lifecycle.MutableLiveData;
-import androidx.lifecycle.Observer;
-import androidx.lifecycle.ViewModel;
-
-import com.example.greenwatch.models.Device;
-import com.example.greenwatch.repositories.DeviceRepository;
-import com.example.greenwatch.sensors.AccelerometerSensor;
-import com.example.greenwatch.sensors.CameraSensor;
-
-import java.util.List;
-
-public class VideodetectionAndAccelerometerViewModel extends ViewModel implements ViewModelInterface{
-    private MutableLiveData<List<Device>> mDeviceList;
-    private MutableLiveData<Boolean> mAccelerometerAlarmDetected;
-    private MutableLiveData<Boolean> mVideoAlarmDetected;
-    private MutableLiveData<Boolean> mVideodetectionAndAccelerometerAlarmDetected = new MutableLiveData<>();
-    private MutableLiveData<List<Device>> mAlarmHistoryList;
-    private MutableLiveData<Boolean> mStartAlarmRecording;
-    private AccelerometerSensor mAccelerometerSensor;
-    private CameraSensor mCameraSensor;
-    private DeviceRepository mDeviceRepository;
-    private boolean VideodetectionAndAccelerometerAlarmDetected;
-
-    @Override
-    public void init() {
-        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);
-    }
-
-    public void meanValueCalculation() {
-        mAccelerometerSensor.meanValueCalculation();
-    }
-
-    public void calibrateAccelerometerSensor() {
-        mAccelerometerSensor.calibrateAccelerometerSensor();
-    }
-
-    public void checkAlarmCondition() {
-        mAccelerometerSensor.checkAlarmCondition();
-    }
-
-    public void bindImageAnalysis(ProcessCameraProvider cameraProvider, LifecycleOwner lifecycleOwner, Context context) {
-        mCameraSensor.bindImageAnalysis(cameraProvider, lifecycleOwner, context);
-    }
-
-    public LiveData<Boolean> getVideodetectionAndAccelerometerAlarmDetected() {
-        setMutableLiveDataVideodetectionAndAccelerometerAlarmDetected();
-        return mVideodetectionAndAccelerometerAlarmDetected;
-    }
-
-    private void setMutableLiveDataVideodetectionAndAccelerometerAlarmDetected() {
-        mVideodetectionAndAccelerometerAlarmDetected.setValue(VideodetectionAndAccelerometerAlarmDetected);
-    }
-
-    Observer<Boolean> observer = new Observer<Boolean>() {
-        @Override
-        public void onChanged(Boolean aBoolean) {
-            if (mVideoAlarmDetected.getValue() || mAccelerometerAlarmDetected.getValue() && !VideodetectionAndAccelerometerAlarmDetected) {
-                VideodetectionAndAccelerometerAlarmDetected = true;
-                setMutableLiveDataVideodetectionAndAccelerometerAlarmDetected();
-
-            }
-            else if (!mVideoAlarmDetected.getValue() && !mAccelerometerAlarmDetected.getValue() && VideodetectionAndAccelerometerAlarmDetected) {
-                VideodetectionAndAccelerometerAlarmDetected = false;
-                setMutableLiveDataVideodetectionAndAccelerometerAlarmDetected();
-            }
-        }
-    };
-
-    private void registerAlarmObserver() {
-        mVideoAlarmDetected.observeForever(observer);
-        mAccelerometerAlarmDetected.observeForever(observer);
-    }
-
-    @Override
-    protected void onCleared() {
-        super.onCleared();
-        mVideoAlarmDetected.removeObserver(observer);
-        mAccelerometerAlarmDetected.removeObserver(observer);
-    }
-
-    @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, int 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, int sensorMessage) {
-        mDeviceRepository.setSensorMassage(deviceID, sensorMessage);
-    }
-
-    @Override
-    public int getSensorMassage(String deviceID) {
-        return mDeviceRepository.getSensorMassage(deviceID);
-    }
-
-    @Override
-    public String getLocalDeviceUUID() {
-        return mDeviceRepository.getLocalDeviceUUID();
-    }
-
-    @Override
-    public String getSystemTimeStamp() {
-        return mDeviceRepository.getSystemTimeStamp();
-    }
-}

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

@@ -1,140 +0,0 @@
-package com.example.greenwatch.viewmodels;
-
-import android.content.Context;
-
-import androidx.camera.lifecycle.ProcessCameraProvider;
-import androidx.lifecycle.LifecycleOwner;
-import androidx.lifecycle.LiveData;
-import androidx.lifecycle.MutableLiveData;
-import androidx.lifecycle.ViewModel;
-
-import com.example.greenwatch.models.Device;
-import com.example.greenwatch.repositories.DeviceRepository;
-import com.example.greenwatch.sensors.CameraSensor;
-
-import java.util.List;
-
-public class VideodetectionViewModel extends ViewModel implements ViewModelInterface {
-
-    private MutableLiveData<List<Device>> mDeviceList;
-    private MutableLiveData<Boolean> mVideoAlarmDetected;
-    private MutableLiveData<List<Device>> mAlarmHistoryList;
-    private MutableLiveData<Boolean> mStartAlarmRecording;
-    private DeviceRepository mDeviceRepository;
-    private CameraSensor mCameraSensor;
-
-
-    public LiveData<Boolean> getVideoMovementDetectedValue() {
-        return mVideoAlarmDetected;
-    }
-
-    @Override
-    public void init() {
-        if (mDeviceRepository == null) {
-            mDeviceRepository = DeviceRepository.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 (mVideoAlarmDetected == null) {
-            mVideoAlarmDetected = mCameraSensor.getVideoAlarmDetectedValue();
-        }
-    }
-
-    public void bindImageAnalysis(ProcessCameraProvider cameraProvider, LifecycleOwner lifecycleOwner, Context context) {
-        mCameraSensor.bindImageAnalysis(cameraProvider, lifecycleOwner, context);
-    }
-
-    public LiveData<Boolean> getVideoAlarmDetectedValue() {
-        return mVideoAlarmDetected;
-    }
-
-    @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, int 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, int sensorMessage) {
-        mDeviceRepository.setSensorMassage(deviceID, sensorMessage);
-    }
-
-    @Override
-    public int getSensorMassage(String deviceID) {
-        return mDeviceRepository.getSensorMassage(deviceID);
-    }
-
-    @Override
-    public String getLocalDeviceUUID() {
-        return mDeviceRepository.getLocalDeviceUUID();
-    }
-
-    @Override
-    public String getSystemTimeStamp() {
-        return mDeviceRepository.getSystemTimeStamp();
-    }
-}

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

@@ -10,7 +10,6 @@ public interface ViewModelInterface {
     void init();
     LiveData<List<Device>> getConnectedDeviceList();
     LiveData<List<Device>> getAlarmHistoryList();
-    LiveData<Boolean> getStartAlarmRecording();
     void updateDevice(String deviceID, String timeStamp, boolean sensorStatus, String sensorType, int sensorMassage);
     void setTimeStamp(String deviceID, String timeStamp);
     String getTimeStamp(String deviceID);
@@ -23,5 +22,4 @@ public interface ViewModelInterface {
     void setSensorMassage(String deviceID, int sensorMessage);
     int getSensorMassage(String deviceID);
     String getLocalDeviceUUID();
-    String getSystemTimeStamp();
 }

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

@@ -22,27 +22,4 @@
         android:text="Back to MainActivity">
     </Button>
 
-    <LinearLayout
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:orientation="vertical">
-
-        <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>
-
-        <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_videodetection_and_accelerometer.xml

@@ -9,24 +9,10 @@
     tools:context=".VideodetectionAndAccelerometerActivity">
 
     <TextView
-        android:id="@+id/tvvideodetectionAndAccelerometerStatusmessage"
+        android:id="@+id/tvVideodetectionAndAccelerometerStatusmessage"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:text="">
+        android:text="Videodetection + Accelerometer Activity">
-    </TextView>
-
-    <TextView
-        android:id="@+id/tvvideodetectionAndAccelerometerData"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:text="">
-    </TextView>
-
-    <TextView
-        android:id="@+id/tvvideodetectionAndAccelerometerWarning"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:text="">
     </TextView>
 
     <Button
@@ -36,27 +22,4 @@
         android:text="Back to MainActivity">
     </Button>
 
-    <LinearLayout
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:orientation="vertical">
-
-        <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>
-
-        <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>