Merge branch 'ko'

# Conflicts:
#	app/src/main/java/com/example/ueberwachungssystem/MainActivity.java

Notiz.txt

@@ -1,3 +0,0 @@
-Sensor als Service einrichten, der aus Activity heraus gestartet werden kann.
-Stichwort: Intent
-Siehe Skript Teil 1

app/build.gradle

@@ -36,4 +36,13 @@ dependencies {
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.ext:junit:1.1.5'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
+
+    // Required for CameraX
+    def camerax_version = "1.2.2"
+    implementation "androidx.camera:camera-core:${camerax_version}"
+    implementation "androidx.camera:camera-camera2:${camerax_version}"
+    implementation "androidx.camera:camera-lifecycle:${camerax_version}"
+    implementation "androidx.camera:camera-video:${camerax_version}"
+    implementation "androidx.camera:camera-view:${camerax_version}"
+    implementation "androidx.camera:camera-extensions:${camerax_version}"
 }

app/src/main/AndroidManifest.xml

@@ -2,6 +2,32 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools">
 
+<!--    &lt;!&ndash; If your app targets Android 13 (API level 33)-->
+<!--         or higher, you must declare the NEARBY_WIFI_DEVICES permission. &ndash;&gt;-->
+<!--    <uses-permission android:name="android.permission.NEARBY_WIFI_DEVICES"-->
+<!--    &lt;!&ndash; If your app derives location information from Wi-Fi APIs,-->
+<!--         don't include the "usesPermissionFlags" attribute. &ndash;&gt;-->
+<!--        android:usesPermissionFlags="neverForLocation" />-->
+
+    <uses-permission
+        android:required="true"
+        android:name="android.permission.ACCESS_FINE_LOCATION"/>
+    <!-- If any feature in your app relies on precise location information,
+         don't include the "maxSdkVersion" attribute. -->
+    <uses-permission
+        android:required="true"
+        android:name="android.permission.ACCESS_WIFI_STATE"/>
+    <uses-permission
+        android:required="true"
+        android:name="android.permission.CHANGE_WIFI_STATE"/>
+    <uses-permission
+        android:required="true"
+        android:name="android.permission.INTERNET"/>
+
+    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.INTERNET" />
+
     <application
         android:allowBackup="true"
         android:dataExtractionRules="@xml/data_extraction_rules"

app/src/main/java/com/example/ueberwachungssystem/Detection/Accelerometer.java

@@ -1,109 +0,0 @@
-package com.example.ueberwachungssystem.Detection;
-
-import static java.lang.Math.sqrt;
-
-import android.content.Context;
-import android.hardware.Sensor;
-import android.hardware.SensorEvent;
-import android.hardware.SensorEventListener;
-import android.hardware.SensorManager;
-
-
-/**
- * Accelerometer inherits some methods from abstract Detector class (more info there)
- *
- *
- * USE FROM MAIN ACTIVITY:
- *
- * Accelerometer beschleunigungssensor = new Accelerometer(this);
- * onCreate:
- * //Accelerometer Setup
- * beschleunigungssensor = new Accelerometer(this, logger, textViewLog);   //logger and textview only for debugging necessary
- * beschleunigungssensor.getSensor();
- *
- * //Starting Detection:
- * beschleunigungssensor.startDetection();
- * //Stopping Detection: also recommended at onPause to avoid unnecessary battery consumption
- * beschleunigungssensor.stopDetection();
- *
- * */
-
-public class Accelerometer extends Detector implements SensorEventListener {
-
-    public SensorManager sensorManager;
-    private static final int sensorType = Sensor.TYPE_LINEAR_ACCELERATION;
-    private Sensor accelerometer;
-    private Context context;
-    boolean alarm = false;
-    //Preallocate memory for the data of each axis of the acceleration sensor
-    float x;
-    float y;
-    float z;
-    float betrag; //Betrag aller drei Achsen sqrt(x*x + y*y + z*z)
-    private DetectionReport detectionReport;
-
-    // In constructor pass Activity, Context and TextView from MainActivity in Accelerometer class
-    public Accelerometer(Context context){
-        super(context); //von Detektor
-        this.context = context;
-    }
-
-    public void getSensor(){
-        sensorManager = (SensorManager)context.getSystemService(Context.SENSOR_SERVICE);
-        if(sensorManager.getSensorList(sensorType).size()==0) {
-            accelerometer = null;
-        }
-        else {
-            accelerometer = sensorManager.getSensorList(sensorType).get(0);
-        }
-    }
-
-    @Override
-    public void onSensorChanged(SensorEvent event) {
-        try {
-            checkAlarm(event);
-        } catch (InterruptedException e) {
-            throw new RuntimeException(e);
-        }
-    }
-
-    public void checkAlarm (SensorEvent event) throws InterruptedException {
-        x = event.values[0];
-        y = event.values[1];
-        z = event.values[2];
-        betrag = (float) sqrt(x*x + y*y + z*z);
-        float threshold = 1.5F;
-
-        if (!alarm) {
-            if (betrag > threshold) {
-                alarm = true;
-                detectionReport = new DetectionReport("Accelerometer1", "Bewegung", betrag);
-                reportViolation("Accelo1", "Bewegung", betrag);
-            }
-        } else {
-            if (betrag < threshold) {
-                alarm = false;
-            } else {
-            }
-        }
-    }
-
-    @Override
-    public void onAccuracyChanged(Sensor sensor, int accuracy) {
-    }
-
-    @Override
-    public void startDetection() {
-        // entspricht void start()
-        //getSensor();
-        if (accelerometer != null) {
-            sensorManager.registerListener(this, accelerometer, SensorManager.SENSOR_DELAY_GAME);
-        }
-    }
-
-    @Override
-    public void stopDetection() {
-        // entspricht void stop()
-        sensorManager.unregisterListener(this, accelerometer);
-    }
-}

app/src/main/java/com/example/ueberwachungssystem/Detection/Detector.java

@@ -1,6 +1,5 @@
 package com.example.ueberwachungssystem.Detection;
 
-import android.content.Context;
 import androidx.annotation.NonNull;
 
 
@@ -8,7 +7,7 @@ abstract public class Detector {
     private OnDetectionListener listener;
 
     /** Constructor - takes context of current activity */
-    public Detector(Context context) {};
+    public Detector() {}
 
 
     /** On Detection Listener - runs when violation is reported */

app/src/main/java/com/example/ueberwachungssystem/Detection/VideoDetector.java

@@ -0,0 +1,196 @@
+package com.example.ueberwachungssystem.Detection;
+
+import android.content.Context;
+import android.graphics.ImageFormat;
+import android.media.Image;
+import android.util.Size;
+
+import androidx.annotation.NonNull;
+import androidx.camera.core.CameraSelector;
+import androidx.camera.core.ExperimentalGetImage;
+import androidx.camera.core.ImageAnalysis;
+import androidx.camera.core.Preview;
+import androidx.camera.lifecycle.ProcessCameraProvider;
+import androidx.camera.view.PreviewView;
+import androidx.core.content.ContextCompat;
+import androidx.lifecycle.LifecycleOwner;
+
+import com.google.common.util.concurrent.ListenableFuture;
+
+import java.nio.ByteBuffer;
+import java.util.concurrent.ExecutionException;
+
+
+/**
+ * Video Detector inherits some methods from abstract Detector class (more info there)
+ *
+ *
+ * USE FROM MAIN ACTIVITY:
+ *
+ * VideoDetector vd = new VideoDetector(this);
+ * vd.setPreview(previewView);  //THIS IS OPTIONAL!
+ * vd.setOnDetectionListener(new Detector.OnDetectionListener{...});
+ * vd.startDetection();
+ * vd.stopDetection
+ *
+ * */
+
+
+@ExperimentalGetImage
+public class VideoDetector extends Detector {
+
+    // Calling Activity
+    private final Context context;
+    // Camera Provider
+    private ProcessCameraProvider cameraProvider;
+    private Boolean isDetectionRunning = false;
+    // Preview Camera Image
+    private PreviewView previewView = null;
+    // Detect Violation
+    private static final float PIXEL_THRESHOLD = 30f;  // Luminosity (brightness channel of YUV_420_888)
+    private static final float ALARM_THRESHOLD = 0.2f;   // Percent of pixels changed
+    private ByteBuffer previousBuffer = null;
+
+
+
+    /**
+     * Constructor
+     * @param context: the context of calling activity (usually "this")
+     * */
+    public VideoDetector(Context context) {
+        super();
+        this.context = context;
+    }
+
+
+    /**
+     *  Starts the Video Detection
+     * */
+    @Override
+    public void startDetection() {
+        if (isDetectionRunning)
+            return;
+        // Request Camera Provider
+        final ListenableFuture<ProcessCameraProvider> cameraProviderFuture = ProcessCameraProvider.getInstance(context);
+        //Check for Camera availability
+        cameraProviderFuture.addListener(() -> {
+            try {
+                cameraProvider = cameraProviderFuture.get();
+                bindAnalysis(cameraProvider);
+                isDetectionRunning = true;
+                previousBuffer = null;
+            } catch (ExecutionException | InterruptedException e) {
+                // No errors need to be handled for this Future. This should never be reached.
+            }
+        },ContextCompat.getMainExecutor(context));
+    }
+
+
+    /**
+     * Stops the Video Detection
+     * */
+    @Override
+    public void stopDetection() {
+        if (!isDetectionRunning)
+            return;
+        cameraProvider.unbindAll();
+        isDetectionRunning = false;
+    }
+
+
+    /**
+     * Set PreviewView to show video feed while detecting
+     * this is optional and does not need to be called
+     * */
+    public void setPreviewView(PreviewView previewView) {
+        this.previewView = previewView;
+    }
+
+
+    /**
+     * Binds the Luminosity Analyzer (configure and run Analysis)
+     * @param cameraProvider: CameraProvider of Context passed by Constructor
+     * */
+    private void bindAnalysis(@NonNull ProcessCameraProvider cameraProvider) {
+        // Configure and create Image Analysis
+        ImageAnalysis.Builder builder = new ImageAnalysis.Builder();
+        builder.setTargetResolution(new Size(640, 480));
+        builder.setBackpressureStrategy(ImageAnalysis.STRATEGY_KEEP_ONLY_LATEST);
+        builder.setOutputImageFormat(ImageAnalysis.OUTPUT_IMAGE_FORMAT_YUV_420_888);
+        ImageAnalysis imageAnalysis = builder.build();
+
+        // Set Analyzer
+        imageAnalysis.setAnalyzer(ContextCompat.getMainExecutor(context), imageProxy -> {
+            if (imageProxy.getFormat() == ImageFormat.YUV_420_888) {
+                Image image = imageProxy.getImage();
+                assert image != null;
+
+                // Changed Pixel Detection
+                int pixelChanged = getChangedPixelCount(image);
+                int width = image.getWidth();
+                int height = image.getHeight();
+
+                float percentPixelChanged = (float) 100f * pixelChanged / (width * height);
+
+                if (percentPixelChanged > ALARM_THRESHOLD)
+                    reportViolation("0", "Video", percentPixelChanged);
+            }
+            imageProxy.close();
+        });
+        // Create Preview
+        Preview preview = new Preview.Builder().build();
+        // Specify which Camera to use
+        CameraSelector cameraSelector = new CameraSelector.Builder().requireLensFacing(CameraSelector.LENS_FACING_BACK).build();
+        // Update PreviewView if set
+        if (previewView != null)
+            preview.setSurfaceProvider(previewView.getSurfaceProvider());
+
+        cameraProvider.bindToLifecycle((LifecycleOwner) context, cameraSelector, imageAnalysis, preview);
+    }
+
+
+
+    /**
+     * Calculate Amount of Pixels changed using a threshold
+     * @param image
+     * */
+    private int getChangedPixelCount(Image image) {
+        Image.Plane[] planes = image.getPlanes();
+        ByteBuffer buffer = planes[0].getBuffer();
+
+        if (previousBuffer == null) {
+            previousBuffer = ByteBuffer.allocate(buffer.capacity());
+            buffer.rewind();
+            previousBuffer.put(buffer);
+            previousBuffer.rewind();
+            return 0;
+        }
+
+        int width = image.getWidth();
+        int height = image.getHeight();
+
+        int yRowStride = image.getPlanes()[0].getRowStride();
+        int yPixelStride = image.getPlanes()[0].getPixelStride();
+
+        int changedPixelCount = 0;
+
+        // Count changed pixels
+        for (int y = 0; y < height; ++y) {
+            for (int x = 0; x < width; x++) {
+                int index = (y * yRowStride) + (x * yPixelStride);
+                int luminosity = (buffer.get(index) & 0xff);
+                int previousLuminosity = (previousBuffer.get(index) & 0xff);
+                int diff = Math.abs(luminosity - previousLuminosity);
+                if (diff > PIXEL_THRESHOLD)
+                    changedPixelCount++;
+            }
+        }
+
+        // Reset and copy Byte Buffer
+        buffer.rewind();
+        previousBuffer.rewind();
+        previousBuffer.put(buffer);
+
+        return changedPixelCount;
+    }
+}

app/src/main/java/com/example/ueberwachungssystem/Logger/Logger.java

@@ -0,0 +1,44 @@
+package com.example.ueberwachungssystem.Logger;
+
+import android.util.Log;
+import android.widget.TextView;
+
+import java.io.PrintWriter;
+import java.io.StringWriter;
+
+public class Logger {
+    private TextView textView;
+    private StringBuffer sb = new StringBuffer();
+    private String tag;
+
+    public Logger(String tag, TextView textView, String logInitText)  {
+        this.tag = tag;
+        this.textView = textView;
+        sb.append(logInitText);
+    }
+
+    public void log(String s)  {
+        Log.d(tag, s);
+        sb.append(s).append("\n");
+        if (textView != null) {
+            textView.setText(sb.toString());
+        }
+    }
+
+    public void log(Exception e)  {
+        StringWriter sw = new StringWriter();
+        e.printStackTrace(new PrintWriter(sw));
+        log(sw.toString());
+    }
+
+    public void clearLog()  {
+        sb.setLength(0);
+        if (textView != null) {
+            textView.setText("");
+        }
+    }
+
+    public String getLoggedText()  {
+        return sb.toString();
+    }
+}

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

@@ -1,72 +1,220 @@
 package com.example.ueberwachungssystem;
 
 import androidx.annotation.NonNull;
+import androidx.camera.core.ExperimentalGetImage;
+import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentTransaction;
 import androidx.appcompat.app.AppCompatActivity;
 
 import android.os.Bundle;
-import android.text.method.ScrollingMovementMethod;
+import android.util.Log;
+import android.view.LayoutInflater;
 import android.view.View;
+import android.view.ViewGroup;
 import android.widget.Button;
+import android.widget.EditText;
+import android.widget.ScrollView;
 import android.widget.TextView;
 import android.widget.ToggleButton;
 
-import com.example.ueberwachungssystem.Detection.Accelerometer;
 import com.example.ueberwachungssystem.Detection.DetectionReport;
 import com.example.ueberwachungssystem.Detection.Detector;
+import com.example.ueberwachungssystem.Detection.VideoDetector;
+import org.w3c.dom.Text;
 
+@ExperimentalGetImage
 public class MainActivity extends AppCompatActivity implements View.OnClickListener {
-
-    private Accelerometer beschleunigungssensor;
-    private TextView textViewLog;
-    private Button button1;
-    ToggleButton toggleButton1;
+    private Fragment aktuellesFragment;
+    WifiCommunication communication;
+    private TextView alarm;
+    private String text = "Das ist ein Alarm des Sensors";
+    //Buttons
+    private ToggleButton toggleKamera;
+    private ToggleButton btnAudio;
+    private ToggleButton btnBewegung;
+    //Detektoren
+    VideoDetector vd = new VideoDetector(this);
+    private void log(String nachricht) {
+        Log.d(this.getClass().getSimpleName(), nachricht);
+    }
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setTitle(this.getClass().getSimpleName());
         setContentView(R.layout.activity_main);
-
-
-        toggleButton1 = findViewById(R.id.toggleButton1); //togglebutton um Detektion zu steuern
-        toggleButton1.setOnClickListener(this);
-
-        //Button to clear Log while Debugging
-        button1 = (Button) findViewById(R.id.button1);
-        button1.setOnClickListener(this);
-
-        //Accelerometer Setup
-        beschleunigungssensor = new Accelerometer(this);   //logger and textview only for debugging necessary
-        beschleunigungssensor.getSensor();
-        beschleunigungssensor.setOnDetectionListener(new Detector.OnDetectionListener() {
+        alarm = findViewById(R.id.Alarm);
+        alarm.setText(text);
+        toggleKamera = findViewById(R.id.toggleKamera);
+        toggleKamera.setOnClickListener(this);
+        vd.setOnDetectionListener(new Detector.OnDetectionListener() {
             @Override
             public void onDetection(@NonNull DetectionReport detectionReport) {
-
+                DetectionReport dr = detectionReport;
+                String drString = dr.toString();
             }
         });
 
+        //boolean isRunning = vd.isRunning();
+
+    }
+    @Override
+    public void onClick(View v) {
+        if (v == toggleKamera) {
+            if (toggleKamera.isChecked()) {
+                vd.startDetection();
+            } else {
+                vd.stopDetection();
+            }
+        }
+    }
+
+    @Override
+    protected void onPause() {
+        super.onPause();
+        communication.stopCommunication();
     }
 
     @Override
     protected void onResume() {
         super.onResume();
-    }
-    @Override
-    protected void onPause() {
-        super.onPause();
-        beschleunigungssensor.stopDetection();
+        communication = new WifiCommunication(MainActivity.this, 1234);
     }
 
-    @Override
-    public void onClick(View v) {
-        if(v == toggleButton1) {
-            if (toggleButton1.isChecked()) {
-                beschleunigungssensor.startDetection();
+    public void onClickZeigeFragment1(View view) {
+        Button button = (Button) view;
+        log(button.getText() + " ausgewählt");
+        zeigeFragment(Fragment1.erstellen("Fragment 1 wurde angeklickt"));
+    }
+    public void onClickZeigeFragment2(View view) {
+        Button button = (Button) view;
+        log(button.getText() + " ausgewählt");
+        zeigeFragment(Fragment2.erstellen("Fragment 2 wurde angeklickt"));
+    }
 
+    public void onClickZeigeFragment3(View view) {
+        Button button = (Button) view;
+        log(button.getText() + " ausgewählt");
+        zeigeFragment(Fragment3.erstellen("Fragment 3 wurde angeklickt"));
+    }
+
+    public void onClickEntferneFragment(View view) {
+        entferneFragment();
+    }
+    private void zeigeFragment(Fragment fragment) {
+        FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
+        ft.replace(R.id.frame, fragment);
+        ft.commit();
+        aktuellesFragment = fragment;
+    }
+    private void entferneFragment() {
+        if (aktuellesFragment != null) {
+            FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
+            ft.remove(aktuellesFragment);
+            ft.commit();
+            aktuellesFragment = null ;
+        }
+    }
+    public static class Fragment1 extends Fragment {
+        private String text;
+        private final static String KEY_TEXT = "KEY_TEXT";
+
+        private void log(String nachricht) {
+            Log.d(this.getClass().getSimpleName(), nachricht);
+        }
+
+        @Override
+        public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle bundle) {
+            log("onCreateView");
+            View view = inflater.inflate(R.layout.fragment1, container, false);
+            TextView Sensor = (TextView) view.findViewById(R.id.Sensor);
+            Sensor.setText(text);
+            return view;
+        }
+        public static Fragment1 erstellen(String text) {
+            Fragment1 fragment = new Fragment1();
+            Bundle b = new Bundle();
+            b.putString(KEY_TEXT, text);
+            fragment.setArguments(b);
+            return fragment;
+        }
+        @Override
+        public void onCreate(Bundle bundle) {
+            super .onCreate(bundle);
+            Bundle args = getArguments();
+            if (args != null ) {
+                text = args.getString(KEY_TEXT);
+                log("onCreate: text=" + text);
             } else {
-                beschleunigungssensor.stopDetection();
+                log("onCreate");
+            }
+        }
+    }
+    public static class Fragment2 extends Fragment {
+        private String text;
+        private final static String KEY_TEXT = "KEY_TEXT" ;
+        private void log(String nachricht) {
+            Log.d(this.getClass().getSimpleName(), nachricht);
+        }
+        @Override
+        public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle bundle) {
+            log( "onCreateView" );
+            View view = inflater.inflate(R.layout.fragment2, container, false );
+            TextView Sensor = (TextView) view.findViewById(R.id.Sensor);
+            Sensor.setText(text);
+            return view;
+        }
+        public static Fragment2 erstellen(String text) {
+            Fragment2 fragment = new Fragment2();
+            Bundle b = new Bundle();
+            b.putString(KEY_TEXT, text);
+            fragment.setArguments(b);
+            return fragment;
+        }
+        @Override
+        public void onCreate(Bundle bundle) {
+            super.onCreate(bundle);
+            Bundle args = getArguments();
+            if (args != null) {
+                text = args.getString(KEY_TEXT);
+                log("onCreate: text=" + text);
+            } else {
+                log("onCreate");
+            }
+        }
+    }
+
+    public static class Fragment3 extends Fragment {
+        private String text;
+        private final static String KEY_TEXT = "KEY_TEXT" ;
+        private void log(String nachricht) {
+            Log.d(this.getClass().getSimpleName(), nachricht);
+        }
+        @Override
+        public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle bundle) {
+            log( "onCreateView" );
+            View view = inflater.inflate(R.layout.fragment2, container, false );
+            TextView Sensor = (TextView) view.findViewById(R.id.Sensor);
+            Sensor.setText(text);
+            return view;
+        }
+        public static Fragment3 erstellen(String text) {
+            Fragment3 fragment = new Fragment3();
+            Bundle b = new Bundle();
+            b.putString(KEY_TEXT, text);
+            fragment.setArguments(b);
+            return fragment;
+        }
+        @Override
+        public void onCreate(Bundle bundle) {
+            super.onCreate(bundle);
+            Bundle args = getArguments();
+            if (args != null) {
+                text = args.getString(KEY_TEXT);
+                log("onCreate: text=" + text);
+            } else {
+                log("onCreate");
             }
-        } else if (v == button1) {
         }
     }
 }

app/src/main/java/com/example/ueberwachungssystem/WifiCommunication.java

@@ -0,0 +1,131 @@
+package com.example.ueberwachungssystem;
+import android.annotation.SuppressLint;
+
+import java.io.IOException;
+import java.net.DatagramPacket;
+import java.net.DatagramSocket;
+import java.net.Inet4Address;
+import java.net.InetAddress;
+import java.net.NetworkInterface;
+import java.net.SocketException;
+import java.net.UnknownHostException;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.Enumeration;
+
+public class WifiCommunication {
+    private final MainActivity mainActivity;
+    private final InetAddress address;
+    private final int port;
+
+    private String messageToSend;
+    volatile private boolean send;
+    private final DatagramSocket socket;
+    volatile private boolean running;
+    @SuppressLint("SetTextI18n")
+    public WifiCommunication(MainActivity mainActivity, int port) {
+        this.mainActivity = mainActivity;
+        this.port = port;
+        try {
+            socket = new DatagramSocket(this.port);
+            socket.setBroadcast(true);
+            address = InetAddress.getByName("255.255.255.255"); //100.82.255.255
+            running = true;
+            send = false;
+            new ReceiveThread().start();
+            new SendThread().start();
+        } catch (SocketException | UnknownHostException e) {
+            throw new RuntimeException(e);
+        }
+        //mainActivity.runOnUiThread(() -> mainActivity.tvMessages.setText("Communication running"));
+    }
+    private class ReceiveThread extends Thread {
+        private StringBuffer rxStringBuffer = new StringBuffer();
+        private String rxString="";
+        private String previousRxString = "";
+
+        @Override
+        public void run() {
+            try {
+                do {
+                    byte[] receiveData = new byte[512];
+                    InetAddress fromAdress;
+                    int fromPort;
+                    DatagramPacket rxPacket = new DatagramPacket(receiveData, receiveData.length);
+                    socket.receive(rxPacket);
+                    fromAdress = rxPacket.getAddress();
+                    fromPort = rxPacket.getPort();
+                    rxString = new String(rxPacket.getData());
+                    if(!previousRxString.equals(rxString)) {
+                        rxStringBuffer.append(rxString).append("\n");
+                        //mainActivity.runOnUiThread(() -> mainActivity.tvMessages.setText(rxStringBuffer));
+                        previousRxString = rxString;
+                    }
+
+
+                } while (running);
+            }
+            catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+    }
+    private class SendThread extends Thread {
+        private int tmpCnt = 0;
+        @Override
+        public void run() {
+            try {
+                do {
+                    if(send)
+                    {
+                        send = false;
+                        SimpleDateFormat formatter = new SimpleDateFormat("HH:mm:ss");
+                        Date curDate = new Date(System.currentTimeMillis());
+                        String str = formatter.format(curDate);
+                        byte[] send_Data = new byte[512];
+                        String txString = (str+ ",Gruppe2," + getLocalIpAddress() + ",An,Video," +messageToSend);
+                        send_Data = txString.getBytes();
+
+                        DatagramPacket txPacket = new DatagramPacket(send_Data, txString.length(), address, port);
+
+                        for(int i = 0; i < 500; i++) {
+                            socket.send(txPacket);
+                            /*try{
+                                sleep(10);
+                            }catch (InterruptedException e){
+                                e.printStackTrace();
+                            }*/
+                        }
+                    }
+                } while (running);
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+    }
+    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 sendTrue(String message){
+        send = true;
+        messageToSend = message;
+    }
+    public void stopCommunication() {
+        running = false;
+        socket.close();
+    }
+}

app/src/main/res/layout-land/activity_main_land.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+</LinearLayout>

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

@@ -1,63 +1,123 @@
 <?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
+<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"
-    tools:context=".MainActivity">
-
-    <TextView
-        android:id="@+id/textViewLog"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_marginStart="32dp"
-        android:layout_marginTop="60dp"
-        android:layout_marginEnd="32dp"
-        android:maxLines="25"
-        android:scrollbars="vertical"
-        android:text="TextViewLoggerMain"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@+id/textViewWorkerThread"
-        app:layout_constraintVertical_bias="0.0" />
+    android:background="@android:color/holo_green_dark"
+    android:visibility="visible"
+    tools:context="com.example.ueberwachungssystem.MainActivity"
+    tools:visibility="visible">
 
     <ToggleButton
-        android:id="@+id/toggleButton1"
+        android:id="@+id/toggleKamera"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_marginStart="161dp"
-        android:layout_marginTop="115dp"
-        android:layout_marginEnd="162dp"
-        android:text="ToggleButton"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        android:layout_alignBottom="@id/toggleAudio"
+        android:layout_marginRight="15dp"
+        android:layout_toStartOf="@+id/toggleAudio"
+        android:layout_toLeftOf="@id/toggleAudio"
+        android:text="Kamera" />
 
-    <TextView
-        android:id="@+id/textViewWorkerThread"
+    <ToggleButton
+        android:id="@+id/toggleAudio"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_marginStart="32dp"
-        android:layout_marginTop="16dp"
-        android:layout_marginEnd="32dp"
-        android:text="textViewWorkerThreadTextView"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@+id/toggleButton1" />
+        android:layout_alignParentTop="true"
+        android:layout_centerHorizontal="true"
+        android:text="Audio" />
+
+    <ToggleButton
+        android:id="@+id/toggleBewegung"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignBottom="@id/toggleAudio"
+        android:layout_marginLeft="15dp"
+        android:layout_toEndOf="@+id/toggleAudio"
+        android:layout_toRightOf="@id/toggleAudio"
+        android:text="Bewegung" />
 
     <Button
-        android:id="@+id/button1"
+        android:id="@+id/btnAudio"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_marginStart="35dp"
-        android:layout_marginTop="31dp"
-        android:layout_marginEnd="282dp"
-        android:layout_marginBottom="100dp"
-        android:text="Clear Log"
-        app:layout_constraintBottom_toTopOf="@+id/textViewWorkerThread"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        android:layout_alignBottom="@id/btnKamera"
+        android:layout_marginRight="15dp"
+        android:layout_toStartOf="@+id/btnKamera"
+        android:onClick="onClickZeigeFragment1"
+        android:text="Audio" />
 
-</androidx.constraintlayout.widget.ConstraintLayout>
+    <Button
+        android:id="@+id/btnKamera"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_below="@id/toggleAudio"
+        android:layout_centerHorizontal="true"
+        android:onClick="onClickZeigeFragment2"
+        android:text="Kamera" />
+
+    <!--
+    <Button
+        android:id="@+id/btnSensorWeg"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_centerHorizontal="true"
+        android:layout_below="@+id/btn1"
+        android:text="Entferne Sensordarstellung"
+        android:onClick="onClickEntferneFragment"/>
+    -->
+    <Button
+        android:id="@+id/btnBewegung"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignBottom="@id/btnKamera"
+        android:layout_marginLeft="15dp"
+        android:layout_toEndOf="@+id/btnKamera"
+        android:layout_toRightOf="@id/btnKamera"
+        android:onClick="onClickZeigeFragment3"
+        android:text="Bewegung" />
+
+    <Button
+        android:id="@+id/btnAufnahme"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_below="@+id/btnKamera"
+        android:layout_toLeftOf="@id/btnKamera"
+        android:layout_marginRight="15dp"
+        android:onClick="onClickEntferneFragment"
+        android:text="Aufnahme" />
+
+    <Button
+        android:id="@+id/btnWiedergabe"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_below="@+id/btnKamera"
+        android:layout_toRightOf="@id/btnKamera"
+        android:layout_marginLeft="15dp"
+        android:onClick="onClickEntferneFragment"
+        android:text="Wiedergabe" />
+
+    <FrameLayout
+        android:id="@+id/frame"
+        android:layout_width="match_parent"
+        android:layout_height="200dp"
+        android:layout_below="@+id/btnAufnahme"
+        android:layout_alignParentStart="true">
+    </FrameLayout>
+
+    <ScrollView
+        android:id= "@+id/scrollView1"
+        android:layout_width= "wrap_content"
+        android:layout_height= "wrap_content"
+        android:layout_below= "@id/frame">
+        <LinearLayout
+            android:layout_width= "match_parent"
+            android:layout_height= "match_parent"
+            android:orientation= "vertical" >
+            <TextView
+                android:id= "@+id/Alarm"
+                android:layout_width= "wrap_content"
+                android:layout_height= "wrap_content" />
+        </LinearLayout>
+    </ScrollView>
+
+</RelativeLayout>

app/src/main/res/layout/fragment1.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:gravity="center_horizontal"
+    android:orientation="vertical"
+    android:background="@android:color/holo_green_light">
+
+    <TextView
+        android:id="@+id/Sensor"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:textAppearance="?android:attr/textAppearanceLarge"/>
+
+    <TextView
+        android:id="@+id/Alarm"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_below="@id/Sensor"
+        android:textAppearance="?android:attr/textAppearanceLarge"/>
+
+</RelativeLayout>

app/src/main/res/layout/fragment2.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:gravity="center_horizontal"
+    android:orientation="vertical"
+    android:background="@android:color/holo_blue_light" >
+
+    <TextView
+        android:id="@+id/Sensor"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:textAppearance="?android:attr/textAppearanceLarge"/>
+
+    <TextView
+        android:id="@+id/Alarm"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_below="@id/Sensor"
+        android:textAppearance="?android:attr/textAppearanceLarge"/>
+
+</LinearLayout>

app/src/main/res/layout/fragment3.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:gravity="center_horizontal"
+    android:orientation="vertical"
+    android:background="@android:color/holo_blue_light" >
+
+    <TextView
+        android:id="@+id/Sensor"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:textAppearance="?android:attr/textAppearanceLarge"/>
+
+    <TextView
+        android:id="@+id/Alarm"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_below="@id/Sensor"
+        android:textAppearance="?android:attr/textAppearanceLarge"/>
+
+</LinearLayout>

build.gradle

@@ -1,5 +1,5 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 plugins {
-    id 'com.android.application' version '8.0.0' apply false
-    id 'com.android.library' version '8.0.0' apply false
+    id 'com.android.application' version '7.4.2' apply false
+    id 'com.android.library' version '7.4.2' apply false
 }

gradle.properties

@@ -18,6 +18,4 @@ android.useAndroidX=true
 # Enables namespacing of each library's R class so that its R class includes only the
 # resources declared in the library itself and none from the library's dependencies,
 # thereby reducing the size of the R class for that library
-android.nonTransitiveRClass=true
-android.defaults.buildfeatures.buildconfig=true
-android.nonFinalResIds=false
+android.nonTransitiveRClass=true

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Thu May 11 15:04:30 CEST 2023
+#Thu May 11 15:19:24 CEST 2023
 distributionBase=GRADLE_USER_HOME
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.0-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.5-bin.zip
 distributionPath=wrapper/dists
 zipStorePath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME