Added Recorder Class. Currently only Audio Recording working

app/build.gradle

     androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
 
     // Required for CameraX
-    def camerax_version = "1.2.2"
+    def camerax_version = "1.2.3"
     implementation "androidx.camera:camera-core:${camerax_version}"
     implementation "androidx.camera:camera-camera2:${camerax_version}"
     implementation "androidx.camera:camera-lifecycle:${camerax_version}"

app/src/main/AndroidManifest.xml

     xmlns:tools="http://schemas.android.com/tools">
 
     <uses-feature android:name="android.hardware.camera"/>
-    <uses-permission android:name="android.permission.CAMERA"/>
+
+    <uses-permission android:name="android.permission.CAMERA" />
+    <uses-permission android:name="android.permission.RECORD_AUDIO" />
 
     <application
         android:allowBackup="true"

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

 import android.Manifest;
 import android.content.pm.PackageManager;
 import android.os.Bundle;
+import android.os.Environment;
 import android.view.View;
 import android.widget.TextView;
 import android.widget.Toast;
 import android.widget.ToggleButton;
 
-import com.example.ueberwachungssystem.VideoDetection.VideoDetector;
+import java.io.File;
+import java.io.IOException;
+import java.lang.reflect.Array;
+import java.util.Arrays;
 
 @ExperimentalGetImage
 public class MainActivity extends AppCompatActivity {
 
-    private static final int CAMERA_PERMISSION_REQUEST_CODE = 101;
+    private static final int PERMISSION_REQUEST_CODE = 111;
 
 
     @Override
         PreviewView previewView = findViewById(R.id.previewView);
 
 
-        VideoDetector vd = new VideoDetector(this);
-        vd.setPreviewView(previewView);
-        vd.setOnDetectionListener(new VideoDetector.OnDetectionListener() {
-            @Override
-            public void onDetection(@NonNull DetectionReport detectionReport) {
-                detectionReport.log("OnDetection");
-                textView.setText(detectionReport.toString());
-            }
-        });
-        //vd.startDetection();
+        File directory = getFilesDir();
+
+
+        Recorder recorder = new Recorder(this);
 
 
         ToggleButton toggleButton = findViewById(R.id.previewButton);
         toggleButton.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
-                getCameraAccess();
-                if (isCameraAccessAllowed() && toggleButton.isChecked())
+                getRecordVideoAccess();
+
+                if (isRecordVideoAllowed() && toggleButton.isChecked())
                 {
-                    vd.startDetection();
+                    //textView.setText(file.getAbsolutePath());
+                    recorder.startRecording();
+
+                    File file = new File(directory, "file.txt");
+
+                    try {
+                        file.createNewFile();
+                    } catch (IOException e) {
+                        throw new RuntimeException(e);
+                    }
+
                 }
                 else {
-                    vd.stopDetection();
-                    textView.setText("");
+                    File[] files = directory.listFiles();
+                    textView.setText(Arrays.toString(files));
+                    recorder.stopRecording();
                 }
             }
         });
     }
 
-    private boolean isCameraAccessAllowed() {
-        return ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED;
+    private boolean isRecordVideoAllowed() {
+        return ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED &&
+                ContextCompat.checkSelfPermission(this, Manifest.permission.RECORD_AUDIO) == PackageManager.PERMISSION_GRANTED;
     }
 
-    private void getCameraAccess() {
-        if (!isCameraAccessAllowed())
-            ActivityCompat.requestPermissions(this, new String[]{android.Manifest.permission.CAMERA}, CAMERA_PERMISSION_REQUEST_CODE);
+    private void getRecordVideoAccess() {
+        if (!isRecordVideoAllowed()) {
+            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.CAMERA, Manifest.permission.RECORD_AUDIO}, PERMISSION_REQUEST_CODE);
+        }
     }
 
+
     @Override
     public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
         super.onRequestPermissionsResult(requestCode, permissions, grantResults);
 
-        if (requestCode == CAMERA_PERMISSION_REQUEST_CODE && grantResults.length > 0) {
+        if (requestCode == PERMISSION_REQUEST_CODE && grantResults.length > 0) {
+
             boolean cameraRights = grantResults[0] == PackageManager.PERMISSION_GRANTED;
-            if (cameraRights) {
-                Toast.makeText(this, "camera permission granted", Toast.LENGTH_LONG).show();
+            boolean recordAudioRights = grantResults[1] == PackageManager.PERMISSION_GRANTED;
+
+            if (cameraRights && recordAudioRights) {
+                Toast.makeText(this, "permissions granted", Toast.LENGTH_LONG).show();
             } else {
-                Toast.makeText(this, "camera permission denied", Toast.LENGTH_LONG).show();
+                Toast.makeText(this, "permissions denied", Toast.LENGTH_LONG).show();
             }
         }
     }

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

+package com.example.ueberwachungssystem;
+
+import android.content.Context;
+import android.media.MediaRecorder;
+import android.os.Environment;
+
+import androidx.camera.core.Camera;
+
+import java.io.File;
+import java.io.IOException;
+
+public class Recorder {
+
+    Context context;
+    MediaRecorder mediaRecorder = null;
+
+    public Recorder (Context context) {
+        this.context = context;
+    }
+
+
+    public void startRecording() {
+
+        mediaRecorder = new MediaRecorder();
+
+        mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
+        mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
+        mediaRecorder.setOutputFile(context.getFilesDir() + "/audio.gpp");
+        mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
+
+
+
+        try {
+            mediaRecorder.prepare();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        mediaRecorder.start();
+    }
+
+    public void stopRecording() {
+        if (mediaRecorder != null) {
+            mediaRecorder.stop();
+            mediaRecorder.reset();
+            mediaRecorder.release();
+            mediaRecorder = null;
+        }
+    }
+
+
+
+    private void initMediaRecorder() {
+        // Set the audio and video source
+        mediaRecorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT);
+        mediaRecorder.setVideoSource(MediaRecorder.VideoSource.DEFAULT);
+
+        // Set the output format and file path
+        mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
+        //String videoFilePath = getOutputMediaFilePath(); // Custom method to get the output file path
+        mediaRecorder.setOutputFile(context.getFilesDir());
+
+        // Set the video encoder and audio encoder
+        mediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.DEFAULT);
+        mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);
+
+        // Configure video size, frame rate, and other settings as needed
+        mediaRecorder.setVideoSize(640, 480); // Set the desired video size
+        mediaRecorder.setVideoFrameRate(30); // Set the desired frame rate
+    }
+
+
+    private String getOutputMediaFilePath() {
+        String videoFileName = "Video.mp4";
+        File storageDir = context.getFilesDir();
+
+        if (!storageDir.exists()) {
+            storageDir.mkdirs();
+        }
+
+        return storageDir.getAbsolutePath() + "/" + videoFileName;
+    }
+}