added new Project ueberwachungssystem

app/build.gradle

@@ -3,11 +3,11 @@ plugins {
 }
 
 android {
-    namespace 'com.example.ueberwachungssystem'
+    namespace 'de.oklein.android.ueberwachungssystem'
     compileSdk 33
 
     defaultConfig {
-        applicationId "com.example.ueberwachungssystem"
+        applicationId "de.oklein.android.ueberwachungssystem"
         minSdk 28
         targetSdk 33
         versionCode 1
@@ -26,18 +26,15 @@ android {
         sourceCompatibility JavaVersion.VERSION_1_8
         targetCompatibility JavaVersion.VERSION_1_8
     }
-    buildFeatures {
-        viewBinding true
-    }
 }
 
 dependencies {
 
     implementation 'androidx.appcompat:appcompat:1.6.1'
-    implementation 'com.google.android.material:material:1.8.0'
+    implementation 'com.google.android.material:material:1.9.0'
     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'
+    implementation "androidx.startup:startup-runtime:1.1.1"
 }

app/src/androidTest/java/de/oklein/android/ueberwachungssystem/ExampleInstrumentedTest.java

@@ -1,4 +1,4 @@
-package com.example.ueberwachungssystem;
+package de.oklein.android.ueberwachungssystem;
 
 import android.content.Context;
 
@@ -21,6 +21,6 @@ public class ExampleInstrumentedTest {
     public void useAppContext() {
         // Context of the app under test.
         Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
-        assertEquals("com.example.ueberwachungssystem", appContext.getPackageName());
+        assertEquals("de.oklein.android.ueberwachungssystem", appContext.getPackageName());
     }
 }

app/src/main/AndroidManifest.xml

@@ -2,11 +2,27 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools">
 
-    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
+<!--    &lt;!&ndash; If your app targets Android 13 (API level 33)-->
-    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+<!--         or higher, you must declare the NEARBY_WIFI_DEVICES permission. &ndash;&gt;-->
-    <uses-permission android:name="android.permission.INTERNET" />
+<!--    <uses-permission android:name="android.permission.NEARBY_WIFI_DEVICES"-->
-    <uses-permission android:name="android.permission.CAMERA" /> <!-- §permissionCamera§ -->
+<!--    &lt;!&ndash; If your app derives location information from Wi-Fi APIs,-->
-    <uses-permission android:name="android.permission.RECORD_AUDIO" />
+<!--         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"/>
 
     <application
         android:allowBackup="true"
@@ -14,14 +30,12 @@
         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

@@ -1,103 +0,0 @@
-package com.example.ueberwachungssystem;
-
-import android.annotation.SuppressLint;
-import android.net.wifi.WifiInfo;
-import android.net.wifi.WifiManager;
-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 androidx.appcompat.app.AppCompatActivity;
-import java.net.InetAddress;
-import java.net.UnknownHostException;
-import java.nio.ByteBuffer;
-import java.nio.ByteOrder;
-
-@SuppressLint("SetTextI18n")
-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;
-
-    boolean communicationRunning = false;
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_main);
-        tvMessages = findViewById(R.id.tvMessages);
-        tvConnectionInfos = findViewById(R.id.tvConnectionInfos);
-        try {
-            SERVER_IP = getLocalIpAddress();
-            tvConnectionInfos.setText("Connection Infos: \n Own IP-Adress: " + SERVER_IP+ " Port: " + SERVER_PORT);
-        } catch (UnknownHostException e) {
-            e.printStackTrace();
-        }
-        Button btnSend = findViewById(R.id.btnSend);
-        btnSend.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                i++;
-                communication.sendTrue(String.valueOf(i));
-            }
-        });
-    }
-    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);
-        }
-    }
-
-    protected void onResume() {
-        super.onResume();
-        if (!communicationRunning){
-            communication = new WifiCommunication(MainActivity.this, SERVER_PORT);
-            communicationRunning = true;
-        }
-        permission = new PermissionRequest(MainActivity.this);
-        permission.rechtePruefen();
-    }
-    @Override
-    protected void onPause() {
-        super.onPause();
-        communication.stopCommunication();
-    }
-    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

@@ -1,124 +0,0 @@
-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/java/de/oklein/android/ueberwachungssystem/Logger/Logger.java

@@ -0,0 +1,44 @@
+package de.oklein.android.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/de/oklein/android/ueberwachungssystem/MainActivity.java

@@ -0,0 +1,171 @@
+package de.oklein.android.ueberwachungssystem;
+
+import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentTransaction;
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.os.Bundle;
+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.TextView;
+
+import org.w3c.dom.Text;
+
+public class MainActivity extends AppCompatActivity {
+    private Fragment aktuellesFragment;
+    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);
+    }
+    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);
+            TextView Alarm = (TextView) view.findViewById(R.id.Alarm);
+            Alarm.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 {
+                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);
+            TextView Alarm = (TextView) view.findViewById(R.id.Alarm);
+            Alarm.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);
+            TextView Alarm = (TextView) view.findViewById(R.id.Alarm);
+            Alarm.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");
+            }
+        }
+    }
+}

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

@@ -1,37 +1,70 @@
-<?xml version = "1.0" encoding = "utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
-<RelativeLayout xmlns:android = "http://schemas.android.com/apk/res/android"
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    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"
+    tools:context="de.oklein.android.ueberwachungssystem.MainActivity"
-    tools:context = ".MainActivity">
+    android:background="@android:color/holo_orange_light">
-    <TextView
-        android:id = "@+id/tvConnectionInfos"
-        android:layout_width = "match_parent"
-        android:layout_height = "wrap_content"
-        android:inputType = "textMultiLine"
-        android:hint="ConnectionInfos"
-        android:textAppearance = "@style/Base.TextAppearance.AppCompat.Medium" />
 
     <Button
-        android:id="@+id/btnSend"
+        android:id="@+id/btn1"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_below="@id/scrollView"
+        android:layout_alignBottom="@id/btn2"
-        android:layout_centerHorizontal="true"
+        android:layout_toLeftOf="@id/btn2"
-        android:text="SEND" />
+        android:text="Audio"
+        android:onClick="onClickZeigeFragment1"/>
 
-    <ScrollView
+    <Button
-        android:id="@+id/scrollView"
+        android:id="@+id/btn2"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_centerHorizontal="true"
+        android:layout_alignParentTop="true"
+        android:text="Kamera"
+        android:onClick="onClickZeigeFragment2"/>
+
+    <Button
+        android:id="@+id/btn3"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignBottom="@id/btn2"
+        android:layout_toRightOf="@id/btn2"
+        android:text="Bewegung"
+        android:onClick="onClickZeigeFragment3"/>
+
+    <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/btnAufnahme"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_below="@+id/btnSensorWeg"
+        android:text="Aufnahme"
+        android:onClick="onClickEntferneFragment"/>
+
+    <Button
+        android:id="@+id/btnWiedergabe"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_toRightOf="@id/btnAufnahme"
+        android:layout_below="@+id/btnSensorWeg"
+        android:text="Wiedergabe"
+        android:onClick="onClickEntferneFragment"/>
+
+    <FrameLayout
+        android:id="@+id/frame"
         android:layout_width="match_parent"
-        android:layout_below="@id/tvConnectionInfos"
+        android:layout_height="match_parent"
-        android:layout_height="300dp">
+        android:layout_alignParentStart="true"
-        <TextView
+        android:layout_below="@+id/btnAufnahme">
-            android:id = "@+id/tvMessages"
+        </FrameLayout>
-            android:layout_width = "match_parent"
+
-            android:layout_height = "wrap_content"
+    </RelativeLayout>
-            android:hint="Messages"
-            android:inputType = "textMultiLine"
-            android:textAppearance = "@style/Base.TextAppearance.AppCompat.Medium" />
-    </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>

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>

app/src/test/java/de/oklein/android/ueberwachungssystem/ExampleUnitTest.java

@@ -1,4 +1,4 @@
-package com.example.ueberwachungssystem;
+package de.oklein.android.ueberwachungssystem;
 
 import org.junit.Test;
 

gradle/wrapper/gradle-wrapper.properties

@@ -1,4 +1,4 @@
-#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-7.5-bin.zip
 distributionPath=wrapper/dists

settings.gradle

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