refactor

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

 package com.example.ueberwachungssystem;
 
+import android.app.Activity;
 import android.content.Context;
 import android.hardware.Camera;
 import android.media.CamcorderProfile;
 import android.media.MediaRecorder;
 import android.view.SurfaceHolder;
 import android.view.SurfaceView;
+import android.view.WindowManager;
 import android.widget.VideoView;
 import java.io.IOException;
 
     private MediaRecorder mediaRecorder = null;
     private SurfaceView surfaceView;
 
+    private static final int SENSOR_ORIENTATION_DEFAULT_DEGREES = 90;
+    private static final int SENSOR_ORIENTATION_INVERSE_DEGREES = 270;
+
     public Recorder (Context context) {
         this.context = context;
         this.surfaceView = new SurfaceView(context);
             mediaRecorder.setOutputFile(context.getFilesDir() + "/video.mp4");
 
 
+
             mediaRecorder.prepare();
             mediaRecorder.start();
 
         }
     }
 
+
     public void stopRecording() {
         if (mediaRecorder != null) {
             try {