Ich muss das Video nur von der Frontkamera aufnehmen, habe viel gegoogelt, konnte aber keine Lösung finden (einfach)

Wenn ich den Kameratyp auf 1 stelle, stürzt die App ab.

Hier ist mein Code

import java.io.File;
import java.io.IOException;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.ActivityInfo;
import android.media.CamcorderProfile;
import android.media.MediaRecorder;
import android.os.Bundle;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.Toast;

public class VideoCapture extends Activity implements OnClickListener, SurfaceHolder.Callback {
    MediaRecorder recorder;
    SurfaceHolder holder;
    boolean recording = false;
    String pathVideo;
    private int cameraType = 1;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
      /*  requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
               WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); */

        pathVideo = "/reg_" + System.currentTimeMillis() + ".mp4";
        recorder = new MediaRecorder();
        initRecorder();
        setContentView(R.layout.camera);

        SurfaceView cameraView = (SurfaceView) findViewById(R.id.surface_camera);
        holder = cameraView.getHolder();
        holder.addCallback(this);
        holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);



        Button rec =(Button) findViewById(R.id.buttonstart);
        rec.setOnClickListener(new OnClickListener() {
            public void onClick(View v)
            {
                  if (recording) {
                      recorder.stop();
                      recording = false;
                      recorder.release();
                      // Let's initRecorder so we can record again
                    initRecorder();
                    prepareRecorder();
                  } else {
                      recording = true;
                      recorder.start();
                  }
            } 
         });
    }

    private void initRecorder() {

        recorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT);
        recorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);

        CamcorderProfile cpHigh = CamcorderProfile
                .get(CamcorderProfile.QUALITY_HIGH);
        recorder.setProfile(cpHigh);


          File Directory = new File("/sdcard/CantaTu/");
       // have the object build the directory structure, if needed.
       Directory.mkdirs();
       File mediaFile = new File(Directory,pathVideo);

        if(mediaFile.exists()){
         mediaFile.delete();
        }
        recorder.setOutputFile(mediaFile.getAbsolutePath());
        recorder.setMaxDuration(400000); // 50 seconds
        recorder.setMaxFileSize(50000000); // Approximately 5 megabytes
    }

    private void prepareRecorder() {
        recorder.setPreviewDisplay(holder.getSurface());

        try {

            recorder.prepare();
        } catch (IllegalStateException e) {
            e.printStackTrace();
            finish();
        } catch (IOException e) {
            e.printStackTrace();
            finish();
        }
    }



    public void surfaceCreated(SurfaceHolder holder) {
        //camera = Camera.open(cameraType);
        prepareRecorder();
    }

    public void surfaceChanged(SurfaceHolder holder, int format, int width,
            int height) {
    }

    public void surfaceDestroyed(SurfaceHolder holder) {
        if (recording) {
            recorder.stop();
            recording = false;
            recorder.release();
        }
        recorder.release();
        //finish();
    }

    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub

    }
}

gibt es keine möglichkeit einfach auf die frontkamera aufzunehmen? Vielen Dank!

BEARBEITEN

Dies ist mein aktueller Code (und er funktioniert nicht, wenn ich versuche, die Frontkamera zu öffnen)

      public void inizializzazione(){

          cameraView.setVisibility(0);


          boolean found = false;
             int i;

             for(i=0; i< Camera.getNumberOfCameras(); i++){
                 System.out.println("camera n " +i);
                 Camera.CameraInfo newInfo = new Camera.CameraInfo();
                 Camera. getCameraInfo(i, newInfo);

                 if (newInfo.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
                     try {
                         found = true;
                        cam = Camera.open(i);
                        System.out.println("trovata la fotocamera frontale");
                     } catch (RuntimeException e) {
                         Log.e("Your_TAG", "Camera failed to open: " + e.getLocalizedMessage());
                     }


             }



            pathVideo = "/reg_" + System.currentTimeMillis() + ".mp4";
          File Directory = new File(Environment.getExternalStorageDirectory().getAbsolutePath() +"/CantaTu/");
           // have the object build the directory structure, if needed.
           Directory.mkdirs();
           File mediaFile = new File(Directory,pathVideo);

            if(mediaFile.exists()){
             mediaFile.delete();
            }



            recorder = new MediaRecorder();

             holder = cameraView.getHolder();
             holder.addCallback(this);
             holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); 

            recorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT);
            recorder.setVideoSource(1);

             CamcorderProfile cpHigh = CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH);

            recorder.setProfile(cpHigh);

             recorder.setOutputFile(mediaFile.getAbsolutePath());
             recorder.setMaxDuration(400000); // 50 seconds

             recorder.setPreviewDisplay(holder.getSurface());




             try {
                 if(found == true){
                     recorder.setCamera(cam);
                 } 
                recorder.prepare();
            } catch (IllegalStateException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }

             recorder.start();

             scritta.setVisibility(0);
             caricamento.setVisibility(4);





      }

}

Ich habe keine Ahnung, warum es die Frontkamera nicht öffnet ... Der Fehler lautet "Start in einem ungültigen Zustand aufgerufen" (weil es die Frontkamera gefunden hat und versucht zu setzen)