Kommunikation Version 1.6 UDP Socket

app/build.gradle

@@ -26,6 +26,9 @@ android {
         sourceCompatibility JavaVersion.VERSION_1_8
         targetCompatibility JavaVersion.VERSION_1_8
     }
+    buildFeatures {
+        viewBinding true
+    }
 }
 
 dependencies {
@@ -33,16 +36,8 @@ dependencies {
     implementation 'androidx.appcompat:appcompat:1.6.1'
     implementation 'com.google.android.material:material:1.8.0'
     implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+    implementation 'com.google.android.gms:play-services-nearby:18.0.0'
     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

@@ -2,8 +2,11 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools">
 
-    <uses-feature android:name="android.hardware.camera"/>
+    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
-    <uses-permission android:name="android.permission.CAMERA"/>
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.CAMERA" /> <!-- §permissionCamera§ -->
+    <uses-permission android:name="android.permission.RECORD_AUDIO" />
 
     <application
         android:allowBackup="true"
@@ -11,12 +14,14 @@
         android:fullBackupContent="@xml/backup_rules"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/Theme.Ueberwachungssystem"
         tools:targetApi="31">
         <activity
             android:name=".MainActivity"
-            android:exported="true">
+            android:exported="true"
+            android:label="Ueberwachungsapp">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 

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

@@ -1,126 +1,103 @@
 package com.example.ueberwachungssystem;
 
-import androidx.annotation.NonNull;
+import android.annotation.SuppressLint;
-import androidx.appcompat.app.AppCompatActivity;
+import android.net.wifi.WifiInfo;
-import androidx.camera.core.Camera;
+import android.net.wifi.WifiManager;
-import androidx.camera.core.CameraSelector;
-import androidx.camera.core.Preview;
-import androidx.camera.lifecycle.ProcessCameraProvider;
-import androidx.camera.view.PreviewView;
-import androidx.core.app.ActivityCompat;
-import androidx.core.content.ContextCompat;
-import androidx.camera.core.ExperimentalGetImage;
-import androidx.lifecycle.LifecycleOwner;
-
-import android.Manifest;
-import android.content.pm.PackageManager;
 import android.os.Bundle;
+import android.view.Menu;
+import android.view.MenuItem;
 import android.view.View;
 import android.widget.Button;
 import android.widget.TextView;
 import android.widget.Toast;
 
-import com.google.common.util.concurrent.ListenableFuture;
+import androidx.appcompat.app.AppCompatActivity;
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
 
-import java.util.concurrent.ExecutionException;
+@SuppressLint("SetTextI18n")
-
-@ExperimentalGetImage
 public class MainActivity extends AppCompatActivity {
+    TextView tvMessages;
+    TextView tvConnectionInfos;
+    WifiCommunication communication;
+    PermissionRequest permission;
+    public static String SERVER_IP = "";
+    public static final int SERVER_PORT = 1234;
+    //private static final int PERMISSION_REQUEST_CODE = 123;
+    float i=0;
 
-    private static final int CAMERA_PERMISSION_REQUEST_CODE = 101;
+    boolean communicationRunning = false;
-    private PreviewView previewView;
-    private TextView textView;
-    private Button previewButton;
-    private Boolean cameraPreviewIsRunning = false;
-    private Boolean isPressed = false;
-
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
-
+        tvMessages = findViewById(R.id.tvMessages);
-        textView = findViewById(R.id.textView);
+        tvConnectionInfos = findViewById(R.id.tvConnectionInfos);
-        previewView = findViewById(R.id.previewView);
+        try {
-        previewButton = findViewById(R.id.previewButton);
+            SERVER_IP = getLocalIpAddress();
-
+            tvConnectionInfos.setText("Connection Infos: \n Own IP-Adress: " + SERVER_IP+ " Port: " + SERVER_PORT);
-
+        } catch (UnknownHostException e) {
-        VideoDetector vd = new VideoDetector(this);
+            e.printStackTrace();
-        vd.setPreviewView(previewView);
+        }
-        vd.startDetection();
+        Button btnSend = findViewById(R.id.btnSend);
-
+        btnSend.setOnClickListener(new View.OnClickListener() {
-        previewButton.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
-                getCameraAccess();
+                i++;
-                if (isCameraAccessAllowed() && !isPressed)
+                communication.sendTrue(String.valueOf(i));
-                {
-                    vd.stopDetection();
-                    isPressed = true;
-                }
-                else if (isCameraAccessAllowed() && isPressed) {
-                    vd.startDetection();
-                    isPressed = false;
-                }
             }
         });
     }
-
+    public boolean onCreateOptionsMenu(Menu menu) {
-    private boolean isCameraAccessAllowed() {
+        getMenuInflater().inflate(R.menu.options_menu, menu);
-        return ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED;
+        return true;
     }
-
+    public boolean onOptionsItemSelected(MenuItem item) {
-    private void getCameraAccess() {
+        Toast.makeText(this, "Selected Item: " +item.getTitle(), Toast.LENGTH_SHORT).show();
-        if (!isCameraAccessAllowed())
+        PopUpClass popUpClass;
-            ActivityCompat.requestPermissions(this, new String[]{android.Manifest.permission.CAMERA}, CAMERA_PERMISSION_REQUEST_CODE);
+        switch (item.getItemId()) {
-    }
+            case R.id.Rechteverwaltung:
-
+                popUpClass = new PopUpClass(MainActivity.this);
-    @Override
+                popUpClass.showPopupWindow(tvMessages);
-    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
+                popUpClass.RechtePrüfen();
-        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
+                return true;
-
+            case R.id.Sensoren:
-        if (requestCode == CAMERA_PERMISSION_REQUEST_CODE && grantResults.length > 0) {
+                popUpClass = new PopUpClass(MainActivity.this);
-            boolean cameraRights = grantResults[0] == PackageManager.PERMISSION_GRANTED;
+                popUpClass.showPopupWindow(tvMessages);
-            if (cameraRights) {
+                popUpClass.Sensoren();
-                Toast.makeText(this, "camera permission granted", Toast.LENGTH_LONG).show();
+                return true;
-            } else {
+            case R.id.Impressum:
-                Toast.makeText(this, "camera permission denied", Toast.LENGTH_LONG).show();
+                popUpClass = new PopUpClass(MainActivity.this);
-            }
+                popUpClass.showPopupWindow(tvMessages);
+                popUpClass.Impressum();
+                return true;
+            default:
+                return super.onOptionsItemSelected(item);
         }
     }
 
-
+    protected void onResume() {
-    private void previewCamera() {
+        super.onResume();
-        // Request Camera Access
+        if (!communicationRunning){
-        getCameraAccess();
+            communication = new WifiCommunication(MainActivity.this, SERVER_PORT);
-        // Return when Camera Access not allowed or Camera Preview is running
+            communicationRunning = true;
-        if (!isCameraAccessAllowed() || cameraPreviewIsRunning)
+        }
-            return;
+        permission = new PermissionRequest(MainActivity.this);
-        // Camera Preview is running
+        permission.rechtePruefen();
-        cameraPreviewIsRunning = true;
-        // Request Camera Provider
-        final ListenableFuture<ProcessCameraProvider> cameraProviderFuture = ProcessCameraProvider.getInstance(this);
-        //Check for Camera availability
-        cameraProviderFuture.addListener(new Runnable() {
-                @Override
-                public void run() {
-                    try {
-                        ProcessCameraProvider cameraProvider = cameraProviderFuture.get();
-                        bindPreview(cameraProvider);
-                    } catch (ExecutionException | InterruptedException e) {
-                        // No errors need to be handled for this Future. This should never be reached.
-                    }
-                }
-            },ContextCompat.getMainExecutor(this));
     }
-
+    @Override
-    private void bindPreview(@NonNull ProcessCameraProvider cameraProvider) {
+    protected void onPause() {
-        // Create Preview
+        super.onPause();
-        Preview preview = new Preview.Builder().build();
+        communication.stopCommunication();
-        // Specify which Camera to use
-        CameraSelector cameraSelector = new CameraSelector.Builder().requireLensFacing(CameraSelector.LENS_FACING_BACK).build();
-        // Connect Preview to PreviewView
-        preview.setSurfaceProvider(previewView.getSurfaceProvider());
-        Camera camera = cameraProvider.bindToLifecycle((LifecycleOwner)this, cameraSelector, preview);
     }
-}
+    private String getLocalIpAddress() throws UnknownHostException {
+        WifiManager wifiManager = (WifiManager) getApplicationContext().getSystemService(WIFI_SERVICE);
+        assert wifiManager != null;
+        WifiInfo wifiInfo = wifiManager.getConnectionInfo();
+        int ipInt = wifiInfo.getIpAddress();
+        return InetAddress.getByAddress(ByteBuffer.allocate(4).order(ByteOrder.LITTLE_ENDIAN).putInt(ipInt).array()).getHostAddress();
+    }
+}

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

@@ -0,0 +1,48 @@
+package com.example.ueberwachungssystem;
+
+import static android.Manifest.permission.INTERNET;
+import static android.Manifest.permission.CAMERA;
+import static android.Manifest.permission.RECORD_AUDIO;
+
+import android.content.pm.PackageManager;
+import android.os.Handler;
+import android.widget.Toast;
+
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.content.ContextCompat;
+
+public class PermissionRequest extends AppCompatActivity{
+    private static final int PERMISSION_REQUEST_CODE = 123;
+    private final MainActivity mainActivity;
+
+    Handler handler = new Handler();
+
+    public PermissionRequest(MainActivity mainActivity) {
+        this.mainActivity = mainActivity;
+    }
+
+    public StringBuilder rechtePruefen() {
+        boolean rechtKamera = ContextCompat.checkSelfPermission(mainActivity, CAMERA) == PackageManager.PERMISSION_GRANTED;
+        boolean rechtMikrofon = ContextCompat.checkSelfPermission(mainActivity, RECORD_AUDIO) == PackageManager.PERMISSION_GRANTED;
+        boolean rechtInternet = ContextCompat.checkSelfPermission(mainActivity, INTERNET) == PackageManager.PERMISSION_GRANTED;
+        StringBuilder sb = new StringBuilder();
+        sb.append("Rechte prüfen:")
+                .append("\nKamera: ").append(rechtKamera)
+                .append("\nMikrofon: ").append(rechtMikrofon)
+                .append("\nInternet: ").append(rechtInternet);
+        //mainActivity.runOnUiThread(() -> mainActivity.tvMessages.setText(sb));
+        if (!(rechtKamera && rechtMikrofon && rechtInternet)){
+            handler.post(new Runnable() {
+                @Override
+                public void run() {
+                    Toast.makeText(mainActivity.getApplicationContext(),"Es werden Rechte benötigt", Toast.LENGTH_LONG).show();
+                }
+            });
+        }
+        return sb;
+    }
+
+    public void rechteAnfordern() {
+        mainActivity.requestPermissions(new String[]{CAMERA, RECORD_AUDIO, INTERNET}, PERMISSION_REQUEST_CODE);
+    }
+}

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

@@ -0,0 +1,86 @@
+package com.example.ueberwachungssystem;
+
+import android.view.Gravity;
+import android.view.LayoutInflater;
+import android.view.MotionEvent;
+import android.view.View;
+import android.widget.Button;
+import android.widget.LinearLayout;
+import android.widget.PopupWindow;
+import android.widget.TextView;
+
+public class PopUpClass {
+    private final MainActivity mainActivity;
+
+    PermissionRequest permission;
+    TextView PopUpText;
+
+
+    public PopUpClass(MainActivity mainActivity) {
+        this.mainActivity = mainActivity;
+        permission = new PermissionRequest(mainActivity);
+    }
+
+    //PopupWindow display method
+
+    public void showPopupWindow(final View view) {
+
+
+        //Create a View object yourself through inflater
+        LayoutInflater inflater = (LayoutInflater) view.getContext().getSystemService(view.getContext().LAYOUT_INFLATER_SERVICE);
+        View popupView = inflater.inflate(R.layout.popup_window, null);
+
+        //Specify the length and width through constants
+        int width = LinearLayout.LayoutParams.WRAP_CONTENT;
+        int height = LinearLayout.LayoutParams.WRAP_CONTENT;
+
+        //Make Inactive Items Outside Of PopupWindow
+        boolean focusable = true;
+
+        //Create a window with our parameters
+        final PopupWindow popupWindow = new PopupWindow(popupView,width*1, height*1, focusable);
+
+        //Set the location of the window on the screen
+        popupWindow.showAtLocation(view, Gravity.CENTER, 0, 0);
+
+        //Initialize the elements of our window, install the handler
+
+        PopUpText = popupView.findViewById(R.id.titleText);
+
+        Button buttonEdit = popupView.findViewById(R.id.RechteAnfordern);
+        buttonEdit.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                RechteAnfordern();
+            }
+        });
+
+        //Handler for clicking on the inactive zone of the window
+
+        popupView.setOnTouchListener(new View.OnTouchListener() {
+            @Override
+            public boolean onTouch(View v, MotionEvent event) {
+
+                //Close the window when clicked
+                popupWindow.dismiss();
+                return true;
+            }
+        });
+    }
+    public void RechtePrüfen(){
+        StringBuilder Text = permission.rechtePruefen();
+        PopUpText.setText(Text);
+    }
+    public void RechteAnfordern(){
+        permission.rechteAnfordern();
+        StringBuilder Text = permission.rechtePruefen();
+        PopUpText.setText(Text);
+    }
+    public void Sensoren(){
+        PopUpText.setText("Es können 3 verschiedene Sensoren verwendet werden \n -1. Beschleunigungssensor\n -2. Mikrofon\n -3. Kamera");
+    }
+    public void Impressum(){
+        PopUpText.setText("Die Ueberwachungsapp wurde im Rahmen eines Praktikums der TH-Nürnberg programmiert");
+    }
+
+}

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

@@ -1,154 +0,0 @@
-package com.example.ueberwachungssystem;
-
-import android.content.Context;
-import android.graphics.ImageFormat;
-import android.media.Image;
-import android.util.Log;
-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.ImageProxy;
-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;
-
-@ExperimentalGetImage
-public class VideoDetector {
-    // Calling Activity
-    private final Context context;
-    // Camera Provider
-    private ProcessCameraProvider cameraProvider;
-    private Boolean isDetectionRunning = false;
-    // Preview Camera Image
-    private PreviewView previewView = null;
-    // Check Violation
-    private final float DELTA_LUMINOSITY_THRESHOLD = 10f;
-    private float lastLuminosity = 0f;
-    private Boolean isViolated = false;
-
-
-    /** Constructor */
-    public VideoDetector(Context context) { this.context = context; }
-
-
-
-    /** Return State of Video Detector */
-    public Boolean isRunning() { return isDetectionRunning; }
-
-    /** Return the status of Violation */
-    public boolean getViolationStatus()
-    {
-        return isViolated;
-    }
-
-    /** Starts Video Detection */
-    public void startDetection() {
-        isDetectionRunning = true;
-        // Request Camera Provider
-        final ListenableFuture<ProcessCameraProvider> cameraProviderFuture = ProcessCameraProvider.getInstance(context);
-        //Check for Camera availability
-        cameraProviderFuture.addListener(new Runnable() {
-            @Override
-            public void run() {
-                try {
-                    cameraProvider = cameraProviderFuture.get();
-                    bindLuminosityAnalysis(cameraProvider);
-                } catch (ExecutionException | InterruptedException e) {
-                    // No errors need to be handled for this Future. This should never be reached.
-                }
-            }
-        },ContextCompat.getMainExecutor(context));
-    }
-
-    /** Stops Video Detection */
-    public void stopDetection() {
-        cameraProvider.unbindAll();
-        isDetectionRunning = false;
-    }
-
-    /** Set PreviewView to show Image */
-    public void setPreviewView(PreviewView previewView) {
-        this.previewView = previewView;
-    }
-
-    /** Binds the Luminosity Analyzer (configure and run Analysis) */
-    private void bindLuminosityAnalysis(@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);
-        ImageAnalysis imageAnalysis = builder.build();
-
-        // Set Analyzer
-        imageAnalysis.setAnalyzer(ContextCompat.getMainExecutor(context), new ImageAnalysis.Analyzer() {
-            @Override
-            public void analyze(@NonNull ImageProxy imageProxy) {
-                if (imageProxy.getFormat() == ImageFormat.YUV_420_888) {
-                    Image image = imageProxy.getImage();
-                    assert image != null;
-
-                    // Analyze frame
-                    float luminosity = calculateLuminosity(image);
-                    Log.d("Video Detector", String.valueOf(luminosity));
-                    if (luminosity != 0)
-                        checkForViolation(luminosity, lastLuminosity);
-                    lastLuminosity = luminosity;
-                }
-                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);
-    }
-
-    /** Return Luminosity from Image */
-    private float calculateLuminosity (Image image) {
-        int width = image.getWidth();
-        int height = image.getHeight();
-
-        Image.Plane[] planes = image.getPlanes();
-        ByteBuffer luminosityBuffer = planes[0].getBuffer();
-
-        int yRowStride = image.getPlanes()[0].getRowStride();
-        int yPixelStride = image.getPlanes()[0].getPixelStride();
-
-        int luminosity;
-        float sum = 0;
-
-        for (int y = 0; y < height; ++y) {
-            for (int x = 0; x < width; x++) {
-                int index = (y * yRowStride) + (x * yPixelStride);
-                luminosity = (luminosityBuffer.get(index) & 0xff);
-                sum += luminosity;
-            }
-        }
-        return sum / (width * height);
-    }
-
-    /** Check if delta Luminosity exceeds threshold */
-    private void checkForViolation(float luminosity, float previousLuminosity) {
-        float deltaLuminosity = Math.abs(luminosity - previousLuminosity);
-        if (deltaLuminosity > DELTA_LUMINOSITY_THRESHOLD) {
-            isViolated = true;
-            Log.d("Violation", "Violation");
-        }
-        Log.d("Delta", String.valueOf(Math.abs(previousLuminosity - luminosity)));
-    }
-}

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

@@ -0,0 +1,124 @@
+package com.example.ueberwachungssystem;
+import android.annotation.SuppressLint;
+import android.widget.Toast;
+
+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);
+        }
+        Toast.makeText(mainActivity.getApplicationContext(),"Communication running", Toast.LENGTH_SHORT).show();
+
+        //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];
+                    DatagramPacket rxPacket = new DatagramPacket(receiveData, receiveData.length);
+                    socket.receive(rxPacket);
+                    rxString = new String(rxPacket.getData());
+                    String[] splitrxString = rxString.split(",");
+                    if(!previousRxString.equals(rxString) && splitrxString[0].equals("1") && splitrxString.length==7) {
+                        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 = ("1," +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);
+                        }
+                    }
+                } 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/activity_main.xml

@@ -1,35 +1,37 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version = "1.0" encoding = "utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<RelativeLayout 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"
-    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width = "match_parent"
-    android:layout_width="match_parent"
+    android:layout_height = "match_parent"
-    android:layout_height="match_parent"
+    android:layout_margin = "16dp"
-    android:layout_gravity="center"
+    tools:context = ".MainActivity">
-    android:gravity="center"
-    android:orientation="vertical"
-    tools:context=".MainActivity">
-
     <TextView
-        android:id="@+id/textView"
+        android:id = "@+id/tvConnectionInfos"
-        android:layout_width="wrap_content"
+        android:layout_width = "match_parent"
-        android:layout_height="wrap_content"
+        android:layout_height = "wrap_content"
-        android:text="Hello World!"
+        android:inputType = "textMultiLine"
-        app:layout_constraintBottom_toBottomOf="parent"
+        android:hint="ConnectionInfos"
-        app:layout_constraintEnd_toEndOf="parent"
+        android:textAppearance = "@style/Base.TextAppearance.AppCompat.Medium" />
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
 
     <Button
-        android:id="@+id/previewButton"
+        android:id="@+id/btnSend"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="Button"
+        android:layout_below="@id/scrollView"
-        tools:layout_editor_absoluteX="156dp"
+        android:layout_centerHorizontal="true"
-        tools:layout_editor_absoluteY="189dp" />
+        android:text="SEND" />
 
-    <androidx.camera.view.PreviewView
+    <ScrollView
-        android:id="@+id/previewView"
+        android:id="@+id/scrollView"
         android:layout_width="match_parent"
-        android:layout_height="match_parent" />
+        android:layout_below="@id/tvConnectionInfos"
-
+        android:layout_height="300dp">
-</LinearLayout>
+        <TextView
+            android:id = "@+id/tvMessages"
+            android:layout_width = "match_parent"
+            android:layout_height = "wrap_content"
+            android:hint="Messages"
+            android:inputType = "textMultiLine"
+            android:textAppearance = "@style/Base.TextAppearance.AppCompat.Medium" />
+    </ScrollView>
+</RelativeLayout>

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

@@ -0,0 +1,29 @@
+<?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"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content"
+    android:paddingLeft="10dp"
+    android:paddingRight="10dp"
+    android:gravity="center"
+    android:background="#A5ACB2">
+
+    <TextView
+        android:id="@+id/titleText"
+        android:layout_gravity="center"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:textSize="20sp"
+        android:textStyle="italic"
+        android:padding="10dp"/>
+
+    <Button
+        android:id="@+id/RechteAnfordern"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_weight="1"
+        android:text="Rechte Anfordern" />
+
+
+
+</LinearLayout>

app/src/main/res/menu/options_menu.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android" >
+    <item android:id="@+id/Rechteverwaltung"
+        android:title="Rechteverwaltung" />
+    <item android:id="@+id/Sensoren"
+        android:title="Sensoren" />
+    <item android:id="@+id/Impressum"
+        android:title="Impressum" />
+</menu>

settings.gradle

@@ -14,3 +14,4 @@ dependencyResolutionManagement {
 }
 rootProject.name = "Ueberwachungssystem"
 include ':app'
+include ':app'