Added Accelerometer to Project

app/src/main/AndroidManifest.xml

@@ -2,7 +2,6 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.example.greenwatch">
 
-    <uses-permission android:name="android.permission.RECORD_AUDIO" />
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
@@ -11,7 +10,22 @@
         android:supportsRtl="true"
         android:theme="@style/Theme.GreenWatch">
         <activity
-            android:name=".Mikrofon"
+            android:name=".ConnectionActivity"
+            android:exported="false" />
+        <activity
+            android:name=".VideodetectionAndAccelerometerActivity"
+            android:exported="false" />
+        <activity
+            android:name=".AudiodetectionAndAccelerometerActivity"
+            android:exported="false" />
+        <activity
+            android:name=".VideodetectionActivity"
+            android:exported="false" />
+        <activity
+            android:name=".AudiodetectionActivity"
+            android:exported="false" />
+        <activity
+            android:name=".AccelerometerActivity"
             android:exported="false" />
         <activity
             android:name=".MainActivity"

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

@@ -0,0 +1,137 @@
+package com.example.greenwatch;
+
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.lifecycle.Observer;
+import androidx.lifecycle.ViewModelProvider;
+
+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.models.Device;
+import com.example.greenwatch.viewmodels.AccelerometerViewModel;
+
+import java.util.List;
+
+public class AccelerometerActivity extends AppCompatActivity implements SensorEventListener {
+
+    private SensorManager accelerometerManager;
+    private Sensor accelerometerSensor;
+    private TextView accelerometerStatusMessage;
+    private TextView accelerometerDataTV;
+    private TextView accelerometerWarningTV;
+    private Button backToMainActivityButton;
+    private AccelerometerViewModel mAccelerometerViewModel;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_accelerometer);
+
+        accelerometerStatusMessage = (TextView) findViewById(R.id.tvAccelerometerStatusmessage);
+        accelerometerDataTV = (TextView) findViewById(R.id.tvAccelerometerData);
+        accelerometerWarningTV = (TextView) findViewById(R.id.tvAccelerometerWarning);
+        backToMainActivityButton = (Button) findViewById(R.id.accelerometerBackToMainActivity);
+
+        backToMainActivityButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                finish();
+            }
+        });
+
+        mAccelerometerViewModel = new ViewModelProvider(this).get(AccelerometerViewModel.class);
+        mAccelerometerViewModel.init();
+        mAccelerometerViewModel.getConnectedDeviceList().observe(this, new Observer<List<Device>>() {
+            @Override
+            public void onChanged(List<Device> devices) {
+                StringBuilder sb = new StringBuilder();
+                sb.append("Time Stamp: ");
+                sb.append(mAccelerometerViewModel.getTimeStamp(mAccelerometerViewModel.getLocalDeviceUUID()));
+                sb.append(";\n");
+                sb.append("DeviceID: ");
+                sb.append(mAccelerometerViewModel.getDeviceID(mAccelerometerViewModel.getLocalDeviceUUID()));
+                sb.append(";\n");
+                sb.append("Sensor Status: ");
+                sb.append(mAccelerometerViewModel.getSensorStatus(mAccelerometerViewModel.getLocalDeviceUUID()));
+                sb.append(";\n");
+                sb.append("Sensor Type: ");
+                sb.append(mAccelerometerViewModel.getSensorType(mAccelerometerViewModel.getLocalDeviceUUID()));
+                sb.append(";\n");
+                sb.append("Sensor Massage: ");
+                sb.append(mAccelerometerViewModel.getSensorMassage(mAccelerometerViewModel.getLocalDeviceUUID()));
+                accelerometerStatusMessage.setText(sb);
+                Toast.makeText(AccelerometerActivity.this, "onChanged", Toast.LENGTH_LONG).show();
+            }
+        });
+
+        mAccelerometerViewModel.getMovementDetectedValue().observe(this, new Observer<Boolean>() {
+            @Override
+            public void onChanged(Boolean aBoolean) {
+                if (aBoolean) {
+                    mAccelerometerViewModel.setDevice(mAccelerometerViewModel.getLocalDeviceUUID(), mAccelerometerViewModel.getSystemTimeStamp(), mAccelerometerViewModel.getLocalDeviceUUID(), true, "Accelerometer", 10);
+                }
+                else {
+                    mAccelerometerViewModel.setDevice(mAccelerometerViewModel.getLocalDeviceUUID(), mAccelerometerViewModel.getSystemTimeStamp(), mAccelerometerViewModel.getLocalDeviceUUID(), false, "Accelerometer", 0);
+                }
+
+            }
+        });
+
+        accelerometerManager = (SensorManager) getSystemService(SENSOR_SERVICE);
+        if (accelerometerManager.getSensorList(Sensor.TYPE_GYROSCOPE).size() == 0) {
+            accelerometerSensor = null;
+            Toast.makeText(AccelerometerActivity.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]);
+        accelerometerDataTV.setText(sb.toString());
+        mAccelerometerViewModel.addValueToGesamtBE(event.values[0] + event.values[1] + event.values[2]);
+        mAccelerometerViewModel.meanValueCalculation();
+        mAccelerometerViewModel.calibrateAccelerometerSensor();
+        mAccelerometerViewModel.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(AccelerometerActivity.this, "We registered to the sensor", Toast.LENGTH_LONG).show();
+            } else {
+                Toast.makeText(AccelerometerActivity.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/AudiodetectionActivity.java

@@ -0,0 +1,27 @@
+package com.example.greenwatch;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+
+public class AudiodetectionActivity extends AppCompatActivity {
+
+    private Button backToMainActivityButton;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_audiodetection);
+
+        backToMainActivityButton = (Button) findViewById(R.id.audiodetectorBackToMainActivity);
+
+        backToMainActivityButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                finish();
+            }
+        });
+    }
+}

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

@@ -0,0 +1,27 @@
+package com.example.greenwatch;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+
+public class AudiodetectionAndAccelerometerActivity extends AppCompatActivity {
+
+    private Button backToMainActivity;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_audiodetection_and_accelerometer);
+
+        backToMainActivity = (Button) findViewById(R.id.audiodetectionAndAccelerometerBackToMainActivity);
+
+        backToMainActivity.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                finish();
+            }
+        });
+    }
+}

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

@@ -0,0 +1,27 @@
+package com.example.greenwatch;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+
+public class ConnectionActivity extends AppCompatActivity {
+
+    private Button backToMainActivity;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_connection);
+
+        backToMainActivity = (Button) findViewById(R.id.connectionBackToMainActivity);
+
+        backToMainActivity.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                finish();
+            }
+        });
+    }
+}

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

@@ -1,23 +0,0 @@
-package com.example.greenwatch;
-
-public class GleitenderMittelwert {
-    private final float wichtungNeuerWert;
-    private final float wichtungAlterWert;
-    private float mittelwert = 0;
-
-    private boolean istMittelwertGesetzt = false;
-
-    GleitenderMittelwert(float wichtungNeuerWert) {
-        this.wichtungNeuerWert = wichtungNeuerWert;
-        this.wichtungAlterWert = 1 - this.wichtungNeuerWert;
-    }
-
-    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/MainActivity.java

@@ -1,25 +1,138 @@
 package com.example.greenwatch;
 
 import androidx.appcompat.app.AppCompatActivity;
+import androidx.lifecycle.Observer;
+import androidx.lifecycle.ViewModelProvider;
 
 import android.content.Intent;
 import android.os.Bundle;
 import android.view.View;
 import android.widget.Button;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import com.example.greenwatch.models.Device;
+import com.example.greenwatch.viewmodels.MainActivityViewModel;
+
+import java.util.List;
 
 public class MainActivity extends AppCompatActivity {
 
+    private TextView tvstatusmessage;
+    private Button audiodetectionButton;
+    private Button videodetectionButton;
+    private Button accelerometerButton;
+    private Button audiodetectionAndAccelerometerButton;
+    private Button videodetectionAndAccelerometerButton;
+    private Button connectionButton;
+    private MainActivityViewModel mMainActivityViewModel;
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
 
-        ((Button)findViewById(R.id.buttonstartmicdetection)).setOnClickListener(new View.OnClickListener(){
+        tvstatusmessage = (TextView) findViewById(R.id.tvStatusmessage);
+        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);
+
+        mMainActivityViewModel = new ViewModelProvider(this).get(MainActivityViewModel.class);
+        mMainActivityViewModel.init();
+        mMainActivityViewModel.getConnectedDeviceList().observe(this, new Observer<List<Device>>() {
             @Override
-            public void onClick(View view) {
+            public void onChanged(List<Device> devices) {
-                Intent i = new Intent(MainActivity.this, Mikrofon.class);
+                StringBuilder sb = new StringBuilder();
-                startActivity(i);
+                sb.append("Time Stamp: ");
+                sb.append(mMainActivityViewModel.getTimeStamp(mMainActivityViewModel.getLocalDeviceUUID()));
+                sb.append(";\n");
+                sb.append("DeviceID: ");
+                sb.append(mMainActivityViewModel.getDeviceID(mMainActivityViewModel.getLocalDeviceUUID()));
+                sb.append(";\n");
+                sb.append("Sensor Status: ");
+                sb.append(mMainActivityViewModel.getSensorStatus(mMainActivityViewModel.getLocalDeviceUUID()));
+                sb.append(";\n");
+                sb.append("Sensor Type: ");
+                sb.append(mMainActivityViewModel.getSensorType(mMainActivityViewModel.getLocalDeviceUUID()));
+                sb.append(";\n");
+                sb.append("Sensor Massage: ");
+                sb.append(mMainActivityViewModel.getSensorMassage(mMainActivityViewModel.getLocalDeviceUUID()));
+                tvstatusmessage.setText(sb);
+                Toast.makeText(MainActivity.this, "onChanged", Toast.LENGTH_LONG).show();
+            }
+        });
+
+        audiodetectionButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                //openAudiodetectionActivity();
+                mMainActivityViewModel.setDevice(mMainActivityViewModel.getLocalDeviceUUID(), "10:51", "12345", false, "Audio", 10);
+            }
+        });
+        videodetectionButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                //openVideodetectionActivity();
+                mMainActivityViewModel.setSensorType(mMainActivityViewModel.getLocalDeviceUUID(), "Video");
+                mMainActivityViewModel.setTimeStamp(mMainActivityViewModel.getLocalDeviceUUID(), "12:50");
+                mMainActivityViewModel.setDeviceID(mMainActivityViewModel.getLocalDeviceUUID(), mMainActivityViewModel.getLocalDeviceUUID());
+            }
+        });
+        accelerometerButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                openAccelerometerActivity();
+                mMainActivityViewModel.setSensorType(mMainActivityViewModel.getLocalDeviceUUID(), "Accelerometer");
+            }
+        });
+        audiodetectionAndAccelerometerButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                //openAudiodetectionAndAccelerometerActivity();
+                mMainActivityViewModel.setSensorType(mMainActivityViewModel.getLocalDeviceUUID(), "AudiodetectionAndAccelerometer");
+                mMainActivityViewModel.setTimeStamp(mMainActivityViewModel.getLocalDeviceUUID(), "00:00");
+                mMainActivityViewModel.setDeviceID(mMainActivityViewModel.getLocalDeviceUUID(), "6789");
+            }
+        });
+        videodetectionAndAccelerometerButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                openVideodetectionAndAccelerometerActivity();
+            }
+        });
+        connectionButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                openConnectionActivity();
             }
         });
     }
+    public void openAudiodetectionActivity(){
+        Intent intent = new Intent(this, AudiodetectionActivity.class);
+        startActivity(intent);
+    }
+    public void openVideodetectionActivity(){
+        Intent intent =  new Intent(this, VideodetectionActivity.class);
+        startActivity(intent);
+    }
+    public void openAccelerometerActivity(){
+        Intent intent = new Intent(this, AccelerometerActivity.class);
+        startActivity(intent);
+    }
+    public void openAudiodetectionAndAccelerometerActivity(){
+        Intent intent = new Intent(this, AudiodetectionAndAccelerometerActivity.class);
+        startActivity(intent);
+    }
+    public void openVideodetectionAndAccelerometerActivity(){
+        Intent intent = new Intent(this, VideodetectionAndAccelerometerActivity.class);
+        startActivity(intent);
+    }
+    public void openConnectionActivity(){
+        Intent intent = new Intent(this, ConnectionActivity.class);
+        startActivity(intent);
+    }
+
 }

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

@@ -1,254 +1,4 @@
 package com.example.greenwatch;
 
-import androidx.appcompat.app.AppCompatActivity;
+public class Mikrofon {
-import androidx.core.app.ActivityCompat;
-import androidx.core.content.ContextCompat;
-
-import android.Manifest;
-import android.content.Context;
-import android.content.SharedPreferences;
-import android.content.pm.PackageManager;
-import android.media.AudioFormat;
-import android.media.AudioRecord;
-import android.media.MediaRecorder;
-import android.os.AsyncTask;
-import android.os.Bundle;
-import android.widget.TextView;
-
-import java.text.SimpleDateFormat;
-import java.util.Date;
-
-public class Mikrofon extends AppCompatActivity {
-
-    private AufnahmeTask aufnahmeTask;
-    private TextView textViewMaxAmp;
-    private TextView textViewMaxAmpdb;
-    private TextView textViewZeitstempel;
-    private static final int RECHTEANFORDERUNG_MIKROFON = 1;
-
-    private boolean detection_mic = false;
-    private String zeit = "0";
-    private boolean kalibrierung_do = true;
-    private float threshold = 40;
-    private float sensitivity = 5;
-    private final static String KEY_WERT = "KEY_WERT_" + Mikrofon.class.getSimpleName();
-    private final static String KEY_KALIBRIERUNG = "KEY_KALIBRIERUNG_" + Mikrofon.class.getSimpleName();
-
-
-
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_mikrofon);
-        textViewMaxAmp = (TextView) findViewById(R.id.textViewMaxAmp);
-        textViewMaxAmpdb = (TextView) findViewById(R.id.textViewMaxAmpdb);
-        textViewZeitstempel = (TextView) findViewById(R.id.textViewZeitstempel);
-        //kalibrierung_do = true;
-
-
-    }
-
-
-    @Override
-    protected void onResume() {
-        super.onResume();
-        SharedPreferences p = getPreferences(Context.MODE_PRIVATE);
-        threshold = p.getFloat(KEY_WERT, 40);
-        kalibrierung_do = p.getBoolean(KEY_KALIBRIERUNG, true);
-
-        if (!istZugriffAufMikrofonErlaubt()) {
-            zugriffAufMikrofonAnfordern();
-        }
-        if (istZugriffAufMikrofonErlaubt()) {
-            aufnahmeTask = new AufnahmeTask();
-            aufnahmeTask.execute();
-        }
-    }
-
-    @Override
-    protected void onPause() {
-        super.onPause();
-        SharedPreferences p = getPreferences(Context.MODE_PRIVATE);
-        SharedPreferences.Editor editor = p.edit();
-        editor.putFloat(KEY_WERT, threshold);
-        if(isFinishing()==true){
-            editor.putBoolean(KEY_KALIBRIERUNG, true);
-        }else {
-            editor.putBoolean(KEY_KALIBRIERUNG, false);
-        }
-        editor.commit();
-        if(aufnahmeTask!=null) {
-            aufnahmeTask.cancel(true);
-            aufnahmeTask = null;
-        }
-    }
-
-    private boolean istZugriffAufMikrofonErlaubt() {
-        if (ContextCompat.checkSelfPermission(this, android.Manifest.permission.RECORD_AUDIO) != PackageManager.PERMISSION_GRANTED) {
-            return false;
-        } else {
-            return true;
-        }
-    }
-
-    private void zugriffAufMikrofonAnfordern() {
-        ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.RECORD_AUDIO}, RECHTEANFORDERUNG_MIKROFON);
-    }
-
-    public static String Zeitpunkt(){
-        Long tslong = System.currentTimeMillis();
-        SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");
-        Date date = new Date(tslong);
-        String resultdate = sdf.format(date);
-
-        return resultdate;
-    }
-
-
-    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;
-        private RingPuffer ringPuffer = new RingPuffer(10);
-        private boolean erlaubt_rise = true;
-        private boolean erlaubt_fall = true;
-
-        AufnahmeTask() {
-            minPufferGroesseInBytes = AudioRecord.getMinBufferSize(sampleRateInHz, channelConfig, audioFormat);
-            pufferGroesseInBytes = minPufferGroesseInBytes * 2;
-            recorder = new AudioRecord(MediaRecorder.AudioSource.MIC, sampleRateInHz, channelConfig, audioFormat, pufferGroesseInBytes);
-        }
-        //hi
-        public float kalibrieren(short[] puffer){
-            try {
-                Thread.sleep(3000);
-
-            } catch (InterruptedException e) {
-                e.printStackTrace();
-            }
-            int anzahlIterationen = 100;
-            float sum = 0;
-            for(int i = 0; i < anzahlIterationen; i++){
-                int z = recorder.read(puffer, 0, puffer.length);
-                Verarbeitungsergebnis kalibrierung = verarbeiten(puffer, z);
-                sum += (float) kalibrierung.db;
-                System.out.println("Aktueller_Wert Kalibrierung" +kalibrierung.db);
-            }
-            System.out.println("Summe:"+sum);
-            return sum/anzahlIterationen;
-        }
-
-        public void Detektion(Verarbeitungsergebnis ergebnis){
-            if(ergebnis.db >= (threshold+sensitivity)){
-                detection_mic = true;
-                erlaubt_fall = true;
-                while(erlaubt_rise){
-                    erlaubt_rise = false;
-                    zeit = Zeitpunkt() + " - " + ergebnis.db + " - " + (threshold+sensitivity); //Überschreiben des Zeitpunkts beim Erkennen der Detektion
-                    //nur zum Testen in zeit noch ergebnis.db und threshold ausgegeben -> muss am Ende nur Zeitpunkt() rein, Rest weg
-                }
-            } else if (ergebnis.db <= (threshold)) {
-                detection_mic = false;
-                erlaubt_rise = true;
-                while(erlaubt_fall){
-                    erlaubt_fall = false;
-                    zeit = Zeitpunkt(); //erneutes Überschreiben des Zeitpunkts beim Verschwinden der Detektion
-                }
-            }
-        }
-        @Override
-        protected Void doInBackground(Long... params) {
-
-            recorder.startRecording();
-            short[] puffer = new short[pufferGroesseInBytes / 2];
-            GleitenderMittelwert gleitenderMittelwertdB = new GleitenderMittelwert(0.2f);
-            float db = 0;
-
-
-            //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 = (float) ergebnis.db;
-                    db = gleitenderMittelwertdB.mittel(db);
-                    ergebnis.db = (int) 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);
-
-
-            System.out.println(detection_mic);
-            System.out.println(zeit);
-            textViewZeitstempel.setText(zeit);
-
-            textViewMaxAmpdb.setText("" + progress[0].db);
-            textViewMaxAmp.setText("" + progress[0].maxAmp);
-
-        }
-    }
-    /////////////////////////////////////////////
-
 }

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

@@ -1,63 +0,0 @@
-package com.example.greenwatch;
-
-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 void hinzufuegen(short[] daten) {
-            for (short d : daten) {
-                puffer[position] = d;
-                position++;
-                if (position >= laenge) {
-                    position = 0;
-                }
-            }
-            if (anzahlEnthaltenerDaten < laenge) {
-                anzahlEnthaltenerDaten += daten.length;
-                if (anzahlEnthaltenerDaten >= laenge) {
-                    anzahlEnthaltenerDaten = laenge;
-                }
-            }
-        }*/
-
-    public short maximum() {
-        short max = 0;
-        for (int i = 0; i < anzahlEnthaltenerDaten; i++) {
-            if (puffer[i] > max) {
-                max = puffer[i];
-            }
-        }
-        return max;
-    }
-
-       /* public float mittelwert() {
-            float summe = 0;
-            for (int i = 0; i < anzahlEnthaltenerDaten; i++) {
-                summe += puffer[i];
-            }
-            return summe / anzahlEnthaltenerDaten;
-        }*/
-}
-

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

@@ -1,13 +0,0 @@
-package com.example.greenwatch;
-
-public class Verarbeitungsergebnis {
-    String status;
-    short maxAmp;
-    int db;
-//
-    Verarbeitungsergebnis(String status, short maxAmp, int db) {
-        this.status = status;
-        this.maxAmp = maxAmp;
-        this.db = db;
-    }
-}

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

@@ -0,0 +1,27 @@
+package com.example.greenwatch;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+
+public class VideodetectionActivity extends AppCompatActivity {
+
+    private Button backToMainActivity;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_videodetection);
+
+        backToMainActivity = (Button) findViewById(R.id.videodetectorBackToMainActivity);
+
+        backToMainActivity.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                finish();
+            }
+        });
+    }
+}

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

@@ -0,0 +1,27 @@
+package com.example.greenwatch;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+
+public class VideodetectionAndAccelerometerActivity extends AppCompatActivity {
+
+    private Button backToMainActivity;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_videodetection_and_accelerometer);
+
+        backToMainActivity = (Button) findViewById(R.id.videodetectionAndAccelerometerBackToMainActivity);
+
+        backToMainActivity.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                finish();
+            }
+        });
+    }
+}

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

@@ -0,0 +1,57 @@
+package com.example.greenwatch.models;
+
+
+public class Device {
+
+    private String timeStamp;
+    private String deviceID;
+    private boolean sensorStatus;
+    private String sensorType;
+    private int sensorMassage;
+
+    public Device(String timeStamp, String deviceID, boolean sensorStatus, String sensorType, int sensorMassage) {
+        this.timeStamp = timeStamp;
+        this.deviceID = deviceID;
+        this.sensorStatus = sensorStatus;
+        this.sensorType = sensorType;
+        this.sensorMassage = sensorMassage;
+    }
+    public void setTimeStamp(String timeStamp) {
+        this.timeStamp = timeStamp;
+    }
+
+    public String getTimeStamp() {
+        return timeStamp;
+    }
+
+    public void setDeviceID(String deviceID) {
+        this.deviceID = deviceID;
+    }
+
+    public String getDeviceID() {
+        return deviceID;
+    }
+    public void setSensorType(String sensorType) {
+        this.sensorType = sensorType;
+    }
+
+    public String getSensorType() {
+        return sensorType;
+    }
+
+    public void setSensorStatus(boolean sensorStatus) {
+        this.sensorStatus = sensorStatus;
+    }
+
+    public Boolean getSensorStatus() {
+        return sensorStatus;
+    }
+
+    public void setSensorMassage(int sensorMassage) {
+        this.sensorMassage = sensorMassage;
+    }
+
+    public int getSensorMassage() {
+        return sensorMassage;
+    }
+}

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

@@ -0,0 +1,216 @@
+package com.example.greenwatch.repositories;
+
+
+import androidx.lifecycle.MutableLiveData;
+
+import com.example.greenwatch.models.Device;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.UUID;
+
+public class DeviceRepository {
+
+    private String delimiter = ", ";
+    private String deviceUUID;
+    private static DeviceRepository deviceRepositoryInstance;
+    private MutableLiveData<List<Device>> deviceList = new MutableLiveData<>();
+    private HashMap<String, Device> connectedDevicesList = new HashMap<>();
+    private HashMap<String, String> deviceIDMapper = new HashMap<>();
+
+    public static synchronized DeviceRepository getInstance() {
+        if (deviceRepositoryInstance == null){
+            deviceRepositoryInstance = new DeviceRepository();
+            deviceRepositoryInstance.setDeviceUUID();
+        }
+        return deviceRepositoryInstance;
+    }
+
+    public MutableLiveData<List<Device>> getConnectedDeviceList() {
+        setMutableLiveDataValue();
+        return deviceList;
+    }
+
+    public void createNewDevice(String timeStamp, String deviceID, boolean sensorStatus, String sensorType, int sensorMassage){
+        Device newDevice = new Device(timeStamp, deviceID, sensorStatus, sensorType, sensorMassage);
+        addToConnectedDeviceList(newDevice.getDeviceID(), newDevice);
+        setMutableLiveDataValue();
+    }
+
+    public void createNewRemoteDevice(String message) {
+        String[] messageString = messageStringSplitter(message);
+        String timeStamp = messageString[0];
+        String deviceID = messageString[1];
+        boolean sensorStatus = Boolean.valueOf(messageString[1]);
+        String sensorType = messageString[3];
+        int sensorMassage = Integer.valueOf(messageString[4]);
+
+        if(!connectedDevicesList.containsKey(deviceID)) {
+            createNewDevice(timeStamp, deviceID, sensorStatus, sensorType, sensorMassage);
+        }
+    }
+
+    public String messageStringBuilder(String deviceID) {
+        StringBuilder message = new StringBuilder();
+        Device device = connectedDevicesList.get(deviceID);
+        if(device != null) {
+            message.append(device.getTimeStamp())
+                    .append(delimiter)
+                    .append(device.getDeviceID())
+                    .append(delimiter)
+                    .append(device.getSensorStatus())
+                    .append(delimiter)
+                    .append(device.getSensorType())
+                    .append(delimiter)
+                    .append(device.getSensorMassage());
+            return message.toString();
+        }
+        return message.toString();
+    }
+
+    public String getLocalDeviceUUID() {
+        return deviceUUID;
+    }
+
+    public void setDevice(String deviceID, String timeStamp, String newDeviceID, boolean sensorStatus, String sensorType, int sensorMassage) {
+        String checkedDeviceID = checkDeviceID(deviceID);
+        Device device = connectedDevicesList.get(checkedDeviceID);
+        if(device != null) {
+            device.setTimeStamp(timeStamp);
+            device.setDeviceID(newDeviceID);
+            device.setSensorStatus(sensorStatus);
+            device.setSensorType(sensorType);
+            device.setSensorMassage(sensorMassage);
+            setDeviceIDMapper(newDeviceID);
+            connectedDevicesList.remove(checkedDeviceID);
+            addToConnectedDeviceList(newDeviceID, device);
+            setMutableLiveDataValue();
+        }
+    }
+
+    public void setTimeStamp(String deviceID, String timeStamp) {
+        String checkedDeviceID = checkDeviceID(deviceID);
+        Device device = connectedDevicesList.get(checkedDeviceID);
+        if(device != null) {
+            device.setTimeStamp(timeStamp);
+            addToConnectedDeviceList(checkedDeviceID, device);
+            setMutableLiveDataValue();
+        }
+    }
+
+    public String getTimeStamp(String deviceID) {
+        String checkedDeviceID = checkDeviceID(deviceID);
+        Device device = connectedDevicesList.get(checkedDeviceID);
+        if(device != null) {
+            return device.getTimeStamp();
+        }
+        return "";
+    }
+
+    public void setDeviceID(String deviceID, String newDeviceID) {
+        String checkedDeviceID = checkDeviceID(deviceID);
+        Device device = connectedDevicesList.get(checkedDeviceID);
+        if(device != null) {
+            device.setDeviceID(newDeviceID);
+            setDeviceIDMapper(newDeviceID);
+            connectedDevicesList.remove(checkedDeviceID);
+            addToConnectedDeviceList(newDeviceID, device);
+            setMutableLiveDataValue();
+        }
+    }
+
+    public String getDeviceID(String deviceID) {
+        String checkedDeviceID = checkDeviceID(deviceID);
+        Device device = connectedDevicesList.get(checkedDeviceID);
+        if(device != null) {
+            return device.getDeviceID();
+        }
+        return "";
+    }
+
+    public void setSensorStatus(String deviceID, boolean sensorStatus) {
+        String checkedDeviceID = checkDeviceID(deviceID);
+        Device device = connectedDevicesList.get(checkedDeviceID);
+        if(device != null) {
+            device.setSensorStatus(sensorStatus);
+            addToConnectedDeviceList(checkedDeviceID, device);
+            setMutableLiveDataValue();
+        }
+    }
+
+    public boolean getSensorStatus(String deviceID) {
+        String checkedDeviceID = checkDeviceID(deviceID);
+        Device device = connectedDevicesList.get(checkedDeviceID);
+        if(device != null) {
+            return device.getSensorStatus();
+        }
+        return false;
+    }
+
+    public void setSensorType(String deviceID, String sensorType) {
+        String checkedDeviceID = checkDeviceID(deviceID);
+        Device device = connectedDevicesList.get(checkedDeviceID);
+        if(device != null) {
+            device.setSensorType(sensorType);
+            addToConnectedDeviceList(checkedDeviceID, device);
+            setMutableLiveDataValue();
+        }
+    }
+
+    public String getSensorType(String deviceID) {
+        String checkedDeviceID = checkDeviceID(deviceID);
+        Device device = connectedDevicesList.get(checkedDeviceID);
+        if(device != null) {
+            return device.getSensorType();
+        }
+        return "";
+    }
+
+    public void setSensorMassage(String deviceID, int sensorMessage) {
+        String checkedDeviceID = checkDeviceID(deviceID);
+        Device device = connectedDevicesList.get(checkedDeviceID);
+        if(device != null) {
+            device.setSensorMassage(sensorMessage);
+            addToConnectedDeviceList(checkedDeviceID, device);
+            setMutableLiveDataValue();
+        }
+    }
+
+    public int getSensorMassage(String deviceID) {
+        String checkedDeviceID = checkDeviceID(deviceID);
+        Device device = connectedDevicesList.get(checkedDeviceID);
+        if(device != null) {
+            return device.getSensorMassage();
+        }
+        return 0;
+    }
+
+    private void setMutableLiveDataValue() {
+        List<Device> list = new ArrayList<>(connectedDevicesList.values());
+        deviceList.setValue(list);
+    }
+
+    private void addToConnectedDeviceList(String key, Device device) {
+        connectedDevicesList.put(key, device);
+    }
+
+    private String checkDeviceID(String deviceID) {
+        if(!deviceIDMapper.isEmpty() && deviceID.equals(deviceUUID)) {
+            return deviceIDMapper.get(deviceID);
+        }
+        return deviceID;
+    }
+
+    private void setDeviceIDMapper(String deviceID) {
+        deviceIDMapper.put(deviceUUID, deviceID);
+    }
+
+    private void setDeviceUUID(){
+        this.deviceUUID = UUID.randomUUID().toString();
+    }
+
+    private String[] messageStringSplitter(String message) {
+        return message.split(delimiter);
+    }
+}

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

@@ -0,0 +1,143 @@
+package com.example.greenwatch.viewmodels;
+
+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 java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+public class AccelerometerViewModel extends ViewModel {
+
+    private MutableLiveData<List<Device>> mDeviceList;
+    private MutableLiveData<Boolean> mMovementDetected = new MutableLiveData<>();
+    private DeviceRepository mDeviceRepository;
+    private ArrayList<Float> Gesamt_be;
+    int arraySize = 500;
+    int functionCallCount;
+    float meanValue;
+    float offsetValue;
+    float thresholdValue;
+    boolean startMeasuring;
+
+    public void init() {
+        if (mDeviceList == null) {
+            mDeviceRepository = DeviceRepository.getInstance();
+            mDeviceList = mDeviceRepository.getConnectedDeviceList();
+        }
+        initGesamtBE();
+        mMovementDetected.setValue(false);
+        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);
+        }
+    }
+
+    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 && !mMovementDetected.getValue()) {
+            mMovementDetected.setValue(true);
+        }
+        else if (meanValue < (thresholdValue + offsetValue) && mMovementDetected.getValue()){
+            mMovementDetected.setValue(false);
+        }
+    }
+
+    public String getSystemTimeStamp() {
+        SimpleDateFormat formatter = new SimpleDateFormat("HH:mm:ss");
+        Date date = new Date(System.currentTimeMillis());
+        return formatter.format(date);
+    }
+
+    public LiveData<Boolean> getMovementDetectedValue() {
+        return mMovementDetected;
+    }
+
+    public LiveData<List<Device>> getConnectedDeviceList() {
+        return mDeviceList;
+    }
+
+    public void setDevice(String deviceID, String timeStamp, String newDeviceID, boolean sensorStatus, String sensorType, int sensorMassage) {
+        mDeviceRepository.setDevice(deviceID, timeStamp,newDeviceID, sensorStatus, sensorType, sensorMassage);
+    }
+
+    public void setTimeStamp(String deviceID, String timeStamp) {
+        mDeviceRepository.setTimeStamp(deviceID, timeStamp);
+    }
+
+    public String getTimeStamp(String deviceID) {
+        return mDeviceRepository.getTimeStamp(deviceID);
+    }
+
+    public void setDeviceID(String deviceID, String newDeviceID) {
+        mDeviceRepository.setDeviceID(deviceID, newDeviceID);
+    }
+
+    public String getDeviceID(String deviceID) {
+        return mDeviceRepository.getDeviceID(deviceID);
+    }
+
+    public void setSensorStatus(String deviceID, boolean sensorStatus) {
+        mDeviceRepository.setSensorStatus(deviceID, sensorStatus);
+    }
+
+    public boolean getSensorStatus(String deviceID) {
+        return mDeviceRepository.getSensorStatus(deviceID);
+    }
+
+    public void setSensorType(String deviceID, String sensorType) {
+        mDeviceRepository.setSensorType(deviceID, sensorType);
+    }
+
+    public String getSensorType(String deviceID) {
+        return mDeviceRepository.getSensorType(deviceID);
+    }
+
+    public void setSensorMassage(String deviceID, int sensorMessage) {
+        mDeviceRepository.setSensorMassage(deviceID, sensorMessage);
+    }
+
+    public int getSensorMassage(String deviceID) {
+        return mDeviceRepository.getSensorMassage(deviceID);
+    }
+
+    public String getLocalDeviceUUID() {
+        return mDeviceRepository.getLocalDeviceUUID();
+    }
+}

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

@@ -0,0 +1,77 @@
+package com.example.greenwatch.viewmodels;
+
+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 java.util.List;
+
+public class MainActivityViewModel extends ViewModel {
+
+    private MutableLiveData<List<Device>> mDeviceList;
+    private DeviceRepository mDeviceRepository;
+
+    public void init() {
+        if(mDeviceList != null) {
+            return;
+        }
+        mDeviceRepository = DeviceRepository.getInstance();
+        mDeviceRepository.createNewDevice("", mDeviceRepository.getLocalDeviceUUID(), false, "", 0);
+        mDeviceList = mDeviceRepository.getConnectedDeviceList();
+    }
+
+    public LiveData<List<Device>> getConnectedDeviceList() {
+        return mDeviceList;
+    }
+
+    public void setDevice(String deviceID, String timeStamp, String newDeviceID, boolean sensorStatus, String sensorType, int sensorMassage) {
+        mDeviceRepository.setDevice(deviceID, timeStamp,newDeviceID, sensorStatus, sensorType, sensorMassage);
+    }
+
+    public void setTimeStamp(String deviceID, String timeStamp) {
+        mDeviceRepository.setTimeStamp(deviceID, timeStamp);
+    }
+
+    public String getTimeStamp(String deviceID) {
+        return mDeviceRepository.getTimeStamp(deviceID);
+    }
+
+    public void setDeviceID(String deviceID, String newDeviceID) {
+        mDeviceRepository.setDeviceID(deviceID, newDeviceID);
+    }
+
+    public String getDeviceID(String deviceID) {
+        return mDeviceRepository.getDeviceID(deviceID);
+    }
+
+    public void setSensorStatus(String deviceID, boolean sensorStatus) {
+        mDeviceRepository.setSensorStatus(deviceID, sensorStatus);
+    }
+
+    public boolean getSensorStatus(String deviceID) {
+        return mDeviceRepository.getSensorStatus(deviceID);
+    }
+
+    public void setSensorType(String deviceID, String sensorType) {
+        mDeviceRepository.setSensorType(deviceID, sensorType);
+    }
+
+    public String getSensorType(String deviceID) {
+        return mDeviceRepository.getSensorType(deviceID);
+    }
+
+    public void setSensorMassage(String deviceID, int sensorMessage) {
+        mDeviceRepository.setSensorMassage(deviceID, sensorMessage);
+    }
+
+    public int getSensorMassage(String deviceID) {
+        return mDeviceRepository.getSensorMassage(deviceID);
+    }
+
+    public String getLocalDeviceUUID() {
+        return mDeviceRepository.getLocalDeviceUUID();
+    }
+}

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

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="10dp"
+    tools:context=".AccelerometerActivity">
+
+    <TextView
+        android:id="@+id/tvAccelerometerStatusmessage"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="">
+    </TextView>
+
+    <TextView
+        android:id="@+id/tvAccelerometerData"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        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"
+        android:layout_height="wrap_content"
+        android:text="Back to MainActivity">
+    </Button>
+
+</LinearLayout>

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

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="10dp"
+    tools:context=".AudiodetectionActivity">
+
+    <TextView
+        android:id="@+id/tvAudiodetectionStatusmessage"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="Audiodetection Activity">
+    </TextView>
+
+    <Button
+        android:id="@+id/audiodetectorBackToMainActivity"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="Back to MainActivity">
+    </Button>
+
+</LinearLayout>

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

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="10dp"
+    tools:context=".AudiodetectionAndAccelerometerActivity">
+
+    <TextView
+        android:id="@+id/tvAudiodetectionAndAccelerometerStatusmessage"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="Audiodetection + Accelerometer Activity">
+    </TextView>
+
+    <Button
+        android:id="@+id/audiodetectionAndAccelerometerBackToMainActivity"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="Back to MainActivity">
+    </Button>
+
+</LinearLayout>

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

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="10dp"
+    tools:context=".ConnectionActivity">
+
+    <TextView
+        android:id="@+id/tvConnectionStatusmessage"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="Connection Activity">
+    </TextView>
+
+    <Button
+        android:id="@+id/connectionBackToMainActivity"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="Back to MainActivity">
+    </Button>
+
+</LinearLayout>

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

@@ -1,18 +1,75 @@
 <?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="10dp"
     tools:context=".MainActivity">
 
+    <TextView
+        android:id="@+id/tvStatusmessage"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:text="Hello World!"
+        android:layout_weight="1">
+    </TextView>
+    
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical"
+        android:layout_weight="1">
+
         <Button
-        android:id="@+id/buttonstartmicdetection"
+            android:id="@+id/audiodetectionButton"
-        android:layout_width="wrap_content"
+            android:layout_width="match_parent"
             android:layout_height="wrap_content"
-        android:text="Starte Mikrofon Detection"
+            android:layout_weight="1"
-        app:layout_constraintBottom_toBottomOf="parent"
+            android:text="Audiodetection">
-        app:layout_constraintEnd_toEndOf="parent"
+        </Button>
-        app:layout_constraintStart_toStartOf="parent"
+
-        app:layout_constraintTop_toTopOf="parent" />
+        <Button
-</androidx.constraintlayout.widget.ConstraintLayout>
+            android:id="@+id/videodetectionButton"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:text="Videodetection">
+        </Button>
+
+        <Button
+            android:id="@+id/accelerometerButton"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:text="Accelerometer">
+        </Button>
+
+        <Button
+            android:id="@+id/audiodetectionAndAccelerometerButton"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            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_weight="1"
+            android:text="Videodetection + Accelerometer">
+        </Button>
+
+        <Button
+            android:id="@+id/connectionButton"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:text="Connect to Devices">
+        </Button>
+
+    </LinearLayout>
+
+</LinearLayout>

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

@@ -1,78 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<RelativeLayout
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    android:paddingBottom="16dp"
-    android:paddingLeft="16dp"
-    android:paddingRight="16dp"
-    android:paddingTop="16dp"
-    tools:activity="com.example.greenwatch">
-
-
-
-
-
-    <TextView
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:text="max. Amp: "
-        android:id="@+id/labelMaxAmp"
-        android:layout_alignParentTop="true"
-        android:layout_alignParentStart="true"/>
-    <TextView
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:id="@+id/textViewMaxAmp"
-        android:text=" "
-        android:layout_alignBaseline="@+id/labelMaxAmp"
-        android:layout_toEndOf="@+id/labelMaxAmpdb"/>
-
-
-    <TextView
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:text="max. Amp in dB: "
-        android:id="@+id/labelMaxAmpdb"
-        android:layout_below="@+id/labelMaxAmp"
-        android:layout_alignParentStart="true"/>
-    <TextView
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:id="@+id/textViewMaxAmpdb"
-        android:text=" "
-        android:layout_alignBaseline="@+id/labelMaxAmpdb"
-        android:layout_toEndOf="@+id/labelMaxAmpdb"/>
-
-    <TextView
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:text="Meldung: "
-        android:id="@+id/labelZeitstempel"
-        android:layout_below="@+id/labelMaxAmpdb"
-        android:layout_alignParentStart="true"/>
-    <TextView
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:id="@+id/textViewZeitstempel"
-        android:text=" "
-        android:layout_alignBaseline="@+id/labelZeitstempel"
-        android:layout_toEndOf="@+id/labelMaxAmpdb"/>
-
-
-
-    <ScrollView
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:id="@+id/scrollView3"
-        android:layout_below="@+id/labelMaxAmpdb"
-        android:layout_alignParentStart="true">
-
-        <TextView
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:id="@+id/textViewLogger"/>
-    </ScrollView>
-
-</RelativeLayout>

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

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="10dp"
+    tools:context=".VideodetectionActivity">
+
+    <TextView
+        android:id="@+id/tvVideodetectionStatusmessage"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="Videodetection Activity">
+    </TextView>
+
+    <Button
+        android:id="@+id/videodetectorBackToMainActivity"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="Back to MainActivity">
+    </Button>
+
+</LinearLayout>

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

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="10dp"
+    tools:context=".VideodetectionAndAccelerometerActivity">
+
+    <TextView
+        android:id="@+id/tvVideodetectionAndAccelerometerStatusmessage"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="Videodetection + Accelerometer Activity">
+    </TextView>
+
+    <Button
+        android:id="@+id/videodetectionAndAccelerometerBackToMainActivity"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="Back to MainActivity">
+    </Button>
+
+</LinearLayout>