Play video in GLSurfaceView instead of SurfaceView

I have been struggling with this for 2 days ... After this answer: https://stackoverflow.com/a/212929/18- mentioned that you can play the video in GLSurfaceView by changing the example MediaPlayerDemo_Video in the demo versions of the API:

All you have to do is replace SurfaceView with GLSurfaceView both in the MediaPlayerDemo_Video.java file and in the corresponding layout file (mediaplayer_2.xml).

You also need to create your own Renderer class (one that implements the GLSurfaceView.Renderer interface) and set it to your GLSurfaceView.

I tried replacing SurfaceView with GLSurfaceView, as suggested, and also using this , but it just works on startup:

07-11 14:54:22.086: E/AndroidRuntime(12373): FATAL EXCEPTION: main
07-11 14:54:22.086: E/AndroidRuntime(12373): java.lang.NullPointerException
07-11 14:54:22.086: E/AndroidRuntime(12373):    at android.opengl.GLSurfaceView.surfaceCreated(GLSurfaceView.java:512)
07-11 14:54:22.086: E/AndroidRuntime(12373):    at android.view.SurfaceView.updateWindow(SurfaceView.java:533)
07-11 14:54:22.086: E/AndroidRuntime(12373):    at android.view.SurfaceView.access$000(SurfaceView.java:81)
07-11 14:54:22.086: E/AndroidRuntime(12373):    at android.view.SurfaceView$3.onPreDraw(SurfaceView.java:169)
07-11 14:54:22.086: E/AndroidRuntime(12373):    at android.view.ViewTreeObserver.dispatchOnPreDraw(ViewTreeObserver.java:590)
07-11 14:54:22.086: E/AndroidRuntime(12373):    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1617)
07-11 14:54:22.086: E/AndroidRuntime(12373):    at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2442)
07-11 14:54:22.086: E/AndroidRuntime(12373):    at android.os.Handler.dispatchMessage(Handler.java:99)
07-11 14:54:22.086: E/AndroidRuntime(12373):    at android.os.Looper.loop(Looper.java:137)
07-11 14:54:22.086: E/AndroidRuntime(12373):    at android.app.ActivityThread.main(ActivityThread.java:4575)
07-11 14:54:22.086: E/AndroidRuntime(12373):    at java.lang.reflect.Method.invokeNative(Native Method)
07-11 14:54:22.086: E/AndroidRuntime(12373):    at java.lang.reflect.Method.invoke(Method.java:511)
07-11 14:54:22.086: E/AndroidRuntime(12373):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
07-11 14:54:22.086: E/AndroidRuntime(12373):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
07-11 14:54:22.086: E/AndroidRuntime(12373):    at dalvik.system.NativeStart.main(Native Method)

, VideoView SurfaceView MediaPlayer, GLSurfaceView, , .

!

: XML:

<?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:orientation="vertical" >

    <com.commonsware.android.camera.MyGLSurfaceView
        android:id="@+id/surface"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center" />

</LinearLayout>

:

public class MediaPlayerDemo_Video extends Activity implements
        OnBufferingUpdateListener, OnCompletionListener,
        OnPreparedListener, OnVideoSizeChangedListener, SurfaceHolder.Callback {

    private MediaPlayer mMediaPlayer;
    private MyGLSurfaceView mPreview;
    private SurfaceHolder holder;

    /**
     * 
     * Called when the activity is first created.
     */
    @Override
    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        setContentView(R.layout.mediaplayer_2);
        mPreview = (MyGLSurfaceView) findViewById(R.id.surface);
        holder = mPreview.getHolder();
        holder.addCallback(this);
        holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);

    }
}

MyGLSurfaceView:

class MyGLSurfaceView extends android.opengl.GLSurfaceView {
    public MyGLSurfaceView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }
}