Graba video y audio con Android / Save video and audio with Android

Llevo varios dias liado intentando programar mi Htc Hero para poder grabar video y audio. ?Despu?s de mucho rebuscar y probar un?mont?n?de ejemplos, al final logr? hacerlo funcionar usando una mezcla de varios.

He hecho dos peque?as aplicaciones una para audio y video y otra para solo imagen.

Camcorder es el mas completo, usamos 4 archivos: Camcorder_preview.xml, camcorderpreview.java, camcorderactivity.java y androidmanifest.xml.

AndroidManifest.xml

Camcorder_preview.xml

CamcorderActivity.java

package video.camcorder;

import android.app.Activity;
import android.content.pm.ActivityInfo;
import android.os.Bundle;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.view.Window;
import android.view.View.OnTouchListener;
public class CamcorderActivity extends Activity {

private CamcorderPreview camcorderPreview;
private boolean recording = false;

/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState) {

   super.onCreate(savedInstanceState);

    requestWindowFeature(Window.FEATURE_NO_TITLE);
    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
    setContentView(R.layout.camcorder_preview);

     camcorderPreview = (CamcorderPreview) findViewById(R.id.camcorder_preview);
     camcorderPreview.setOnTouchListener(new OnTouchListener() {

@Override

public boolean onTouch(View view, MotionEvent event) {

          if (event.getAction() == MotionEvent.ACTION_DOWN) {
                 if (recording) {
                        Log.i("YO", "Saliendo.");
                          camcorderPreview.getRecorder().stop();
                          camcorderPreview.getRecorder().release();
                          finish();
                  } else {

                      recording = true;
                      Log.i("YO", "Grabando.");
                      camcorderPreview.getRecorder().start();
                  }
                      return true;
             }
          return false;
       }
     });
  }
}

Y la clase que realmente hace el trabajo duro.

Camcorderpreview.java:

package video.camcorder;

import java.io.File;
import java.io.IOException;
import android.content.Context;
import android.media.MediaRecorder;
import android.os.Environment;
import android.util.AttributeSet;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;

public class CamcorderPreview extends SurfaceView implements

SurfaceHolder.Callback {
MediaRecorder recorder;
SurfaceHolder holder;

    public CamcorderPreview(Context context, AttributeSet attrs) {

      super(context, attrs);

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

      recorder = new MediaRecorder();
      recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
      recorder.setVideoSource(MediaRecorder.VideoSource.DEFAULT);
      recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
      recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
      recorder.setVideoEncoder(MediaRecorder.VideoEncoder.MPEG_4_SP);
   }

@Override

  public void surfaceChanged(SurfaceHolder holder, int format, int width,

        int height) {
   }

@Override

public void surfaceCreated(SurfaceHolder holder) {

      String path = Environment.getExternalStorageDirectory().getAbsolutePath() + "/data/ejemplo.mp4";
      File directory = new File(path).getParentFile();

 if (!directory.exists() && !directory.mkdirs()) {
      try {
		throw new IOException("Path to file could not be created.");
	} catch (IOException e) {
		// TODO Auto-generated catch block
		e.printStackTrace();
	}
    }

recorder.setOutputFile(path);
recorder.setPreviewDisplay(holder.getSurface());

if (recorder != null) {

        try {
        	recorder.prepare();

        } catch (IllegalStateException e) {

                Log.e("YO.1.Illegal", e.toString());

        } catch (IOException e) {

                Log.e("YO.2.IOException", e.toString());

        }
   }
}

@Override

public void surfaceDestroyed(SurfaceHolder holder) {

}

public MediaRecorder getRecorder() {

 return recorder;
}

}

Y VideoRecorder que solo graba video, que es interesante si no te sirve para nada el audio.

VideoRecorder Manifest.xml

Videorecorder.java

package video.recorder;

import android.app.Activity;
import android.content.Context;
import android.content.pm.ActivityInfo;
import android.media.MediaRecorder;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.Surface;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.Window;



public class VideoRecorder extends Activity
{
private final static String TAG = "Playing";
private MediaRecorder recorder;
private Preview mPreview;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
recorder = new MediaRecorder();

recorder.setVideoSource(MediaRecorder.VideoSource.DEFAULT);

recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
recorder.setVideoEncoder(MediaRecorder.VideoEncoder.MPEG_4_SP);

mPreview = new Preview(this,recorder);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
setContentView(mPreview);

}

@Override
public boolean onCreateOptionsMenu(Menu menu)
{
menu.add(0, 0, 0, "StartRecording");
menu.add(0, 1, 0, "StopRecording");
return super.onCreateOptionsMenu(menu);
}

@Override
public boolean onOptionsItemSelected(MenuItem item)
{
switch (item.getItemId())
{
case 0:
try {

recorder.start();

} catch (Exception e) {
String message = e.getMessage();
Log.w(TAG, e);
recorder.release();
}
break;

case 1:	//GoToAllNotes
recorder.stop();
recorder.release();
recorder = null;
finish();
break;

default:
break;
}
return super.onOptionsItemSelected(item);
}
}

class Preview extends SurfaceView implements SurfaceHolder.Callback
{
SurfaceHolder mHolder;
MediaRecorder tempRecorder;

Preview(Context context, MediaRecorder recorder)
{
super(context);
tempRecorder = recorder;
mHolder = getHolder();
mHolder.addCallback(this);
mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
}

public Surface getSurface()
{
return mHolder.getSurface();
}

public void surfaceCreated(SurfaceHolder holder)
{
tempRecorder.setOutputFile("/sdcard/myVideo.3gp");
tempRecorder.setPreviewDisplay(mHolder.getSurface());
try{
tempRecorder.prepare();
} catch (Exception e) {
String message = e.getMessage();
tempRecorder.release();
tempRecorder = null;
}
}

public void surfaceDestroyed(SurfaceHolder holder)
{
if(tempRecorder!=null)
{
tempRecorder.release();
tempRecorder = null;
}
}

public void surfaceChanged(SurfaceHolder holder, int format, int w, int h)
{

}

}

En el foro de and.roid.es esta el hilo donde discutimos sobre este tema.