app/build.gradle

@@ -26,9 +26,6 @@ android {
         sourceCompatibility JavaVersion.VERSION_1_8
         targetCompatibility JavaVersion.VERSION_1_8
     }
-    buildFeatures {
-        viewBinding true
-    }
 }
 
 dependencies {
@@ -36,7 +33,6 @@ 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'

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

@@ -3,17 +3,13 @@ package com.example.ueberwachungssystem.Detection;
 import android.content.Intent;
 import android.os.Binder;
 import android.os.IBinder;
-import android.util.Log;
 import android.widget.ImageView;
-import android.widget.Toast;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.camera.core.ExperimentalGetImage;
 import androidx.lifecycle.LifecycleService;
 
-import com.example.ueberwachungssystem.WifiCommunication;
-
 import java.io.File;
 
 @ExperimentalGetImage
@@ -25,11 +21,6 @@ public class DetectorService extends LifecycleService {
     VideoDetector videoDetector = null;
     AudioRecorder audioRecorder = null;
 
-    /** Communication **/
-
-    WifiCommunication wifiCommunication;
-
-    StringBuffer dataFromWifi;
 
     @Override
     public int onStartCommand(Intent intent, int flags, int startId) {
@@ -51,16 +42,9 @@ public class DetectorService extends LifecycleService {
 
 
         isServiceRunning = true;
-
-        wifiCommunication = new WifiCommunication (1234);
-        wifiCommunication.setOnConnectionListener(new WifiCommunication.OnConnectionListener() {
-            @Override
-            public void onConnection(StringBuffer data) {
-                dataFromWifi = data;
-            }
-        });
         return super.onStartCommand(intent, flags, startId);
     }
+
     @Override
     public void onDestroy() {
         super.onDestroy();
@@ -156,6 +140,8 @@ public class DetectorService extends LifecycleService {
     }
 
 
+
+
     /** pass Detection Report to Service Detection Listener and trigger it */
     public void passToServiceListener(DetectionReport detectionReport) {
         if (listener != null) {

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

@@ -1,113 +1,27 @@
 package com.example.ueberwachungssystem;
 
-import static android.content.ContentValues.TAG;
-
-import android.annotation.SuppressLint;
-import android.net.wifi.WifiInfo;
-import android.net.wifi.WifiManager;
-import android.net.wifi.WifiInfo;
-import android.net.wifi.WifiManager;
-import android.os.Bundle;
-import android.util.Log;
-import android.view.MenuItem;
-import android.widget.Toast;
-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 androidx.appcompat.app.AppCompatActivity;
-import java.net.InetAddress;
-import java.net.UnknownHostException;
-import java.nio.ByteBuffer;
-import java.nio.ByteOrder;
 
-@SuppressLint("SetTextI18n")
+import android.os.Bundle;
+
 public class MainActivity extends AppCompatActivity {
 
     WifiCommunication communication;
-    PermissionRequest permission;
-    boolean communicationRunning = true;
-    String dataRecieved;
-    TextView textview1;
 
         @Override
         protected void onCreate(Bundle savedInstanceState) {
             super.onCreate(savedInstanceState);
             setContentView(R.layout.activity_main);
-            textview1 = findViewById(R.id.textView1);
-
-            Button button1 = findViewById(R.id.buttonSend);
-            button1.setOnClickListener(new View.OnClickListener() {
-                @Override
-                public void onClick(View v) {
-                    communication.sendTrue("Testmessage");
-                }
-            });
         }
     @Override
     protected void onResume() {
         super.onResume();
-        if (communicationRunning){
+        communication = new WifiCommunication(MainActivity.this, 1234);
-            communication = new WifiCommunication(1234);
+    }
-            communication.setOnConnectionListener(new WifiCommunication.OnConnectionListener() {
-                @Override
-                public void onConnection(StringBuffer data) {
-                    //Log.d("Test", data.toString());
-                    runOnUiThread(new Runnable() {
-                        @Override
-                        public void run() {
-                            textview1.setText(data);
-                        }
-                    });
-                }
-            });
-            communicationRunning = false;
-        }
-        permission = new PermissionRequest(MainActivity.this);
-        permission.rechtePruefen();
-        }
 
     @Override
     protected void onPause() {
         super.onPause();
-        //communication.stopCommunication();
+        communication.stopCommunication();
-    }
-    public boolean onCreateOptionsMenu(Menu menu) {
-        getMenuInflater().inflate(R.menu.options_menu, menu);
-        return true;
-    }
-    public boolean onOptionsItemSelected(MenuItem item) {
-        Toast.makeText(this, "Selected Item: " + item.getTitle(), Toast.LENGTH_SHORT).show();
-        PopUpClass popUpClass;
-        switch (item.getItemId()) {
-            case R.id.Rechteverwaltung:
-                popUpClass = new PopUpClass(MainActivity.this);
-                //popUpClass.showPopupWindow(tvMessages);
-                popUpClass.RechtePrüfen();
-                return true;
-            case R.id.Sensoren:
-                popUpClass = new PopUpClass(MainActivity.this);
-                //popUpClass.showPopupWindow(tvMessages);
-                popUpClass.Sensoren();
-                return true;
-            case R.id.Impressum:
-                popUpClass = new PopUpClass(MainActivity.this);
-                //popUpClass.showPopupWindow(tvMessages);
-                popUpClass.Impressum();
-                return true;
-            default:
-                return super.onOptionsItemSelected(item);
-        }
-    }
-    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

@@ -1,48 +0,0 @@
-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

@@ -1,86 +0,0 @@
-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/WifiCommunication.java

@@ -1,12 +1,5 @@
 package com.example.ueberwachungssystem;
 import android.annotation.SuppressLint;
-import android.widget.Toast;
-
-import androidx.annotation.NonNull;
-
-import com.example.ueberwachungssystem.Detection.DetectionReport;
-import com.example.ueberwachungssystem.Detection.Detector;
-import com.example.ueberwachungssystem.Detection.DetectorService;
 
 import java.io.IOException;
 import java.net.DatagramPacket;
@@ -21,7 +14,7 @@ import java.util.Date;
 import java.util.Enumeration;
 
 public class WifiCommunication {
-    //private final MainActivity mainActivity;
+    private final MainActivity mainActivity;
     private final InetAddress address;
     private final int port;
 
@@ -29,11 +22,9 @@ public class WifiCommunication {
     volatile private boolean send;
     private final DatagramSocket socket;
     volatile private boolean running;
-
-    private OnConnectionListener listener;
     @SuppressLint("SetTextI18n")
-    public WifiCommunication(int port) {
+    public WifiCommunication(MainActivity mainActivity, int port) {
-        //this.mainActivity = mainActivity;
+        this.mainActivity = mainActivity;
         this.port = port;
         try {
             socket = new DatagramSocket(this.port);
@@ -46,23 +37,8 @@ public class WifiCommunication {
         } 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"));
     }
-
-    public interface OnConnectionListener {
-        void onConnection(StringBuffer data);
-    }
-    public void setOnConnectionListener(@NonNull OnConnectionListener listener) {
-        this.listener = listener;
-    }
-
-    public void sendWifiData(StringBuffer wifiMessage) {
-        if (listener != null) {
-            listener.onConnection(wifiMessage);
-        }
-    }
-
     private class ReceiveThread extends Thread {
         private StringBuffer rxStringBuffer = new StringBuffer();
         private String rxString="";
@@ -73,16 +49,20 @@ public class WifiCommunication {
             try {
                 do {
                     byte[] receiveData = new byte[512];
+                    InetAddress fromAdress;
+                    int fromPort;
                     DatagramPacket rxPacket = new DatagramPacket(receiveData, receiveData.length);
                     socket.receive(rxPacket);
-                    rxString = new String(receiveData, 0, rxPacket.getLength());
+                    fromAdress = rxPacket.getAddress();
-                    String[] splitrxString = rxString.split(",");
+                    fromPort = rxPacket.getPort();
-                    if(!previousRxString.equals(rxString) && splitrxString[0].equals("1") && splitrxString.length==7) {
+                    rxString = new String(rxPacket.getData());
+                    if(!previousRxString.equals(rxString)) {
                         rxStringBuffer.append(rxString).append("\n");
-                        sendWifiData(rxStringBuffer);
                         //mainActivity.runOnUiThread(() -> mainActivity.tvMessages.setText(rxStringBuffer));
                         previousRxString = rxString;
                     }
+
+
                 } while (running);
             }
             catch (IOException e) {
@@ -103,13 +83,18 @@ public class WifiCommunication {
                         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);
+                        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 < 300; i++) {
+                        for(int i = 0; i < 500; i++) {
                             socket.send(txPacket);
+                            /*try{
+                                sleep(10);
+                            }catch (InterruptedException e){
+                                e.printStackTrace();
+                            }*/
                         }
                     }
                 } while (running);

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

@@ -38,16 +38,4 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content" />
 
-    <TextView
-        android:id="@+id/textView1"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:text="TextView" />
-
-    <Button
-        android:id="@+id/buttonSend"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:text="Button" />
-
 </LinearLayout>

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

@@ -1,29 +0,0 @@
-<?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

@@ -1,9 +0,0 @@
-<?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

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