Playing video using MediaPlayer class

Question

I am trying to make use of MediaPlayer class for playing a video file. The problem is video is not getting displayed at all though I can hear the sound in the video playing.

Following is the code of activity

public class MainActivity extends Activity implements OnClickListener {

private SurfaceView surfaceView;
private Button btnPlay;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    init();
    addListener();

}

private void init() {
    // TODO Auto-generated method stub
    surfaceView = (SurfaceView) findViewById(R.id.surfaceView1);
    btnPlay = (Button) findViewById(R.id.btnPlay);
}

private void addListener() {
    // TODO Auto-generated method stub

    btnPlay.setOnClickListener(this);
}

MediaPlayer mediaPlayer = null;

@Override
public void onClick(View v) {
    // TODO Auto-generated method stub
    switch (v.getId()) {
    case R.id.btnPlay:
        try{
        if (mediaPlayer != null) {
            mediaPlayer.reset();
            mediaPlayer.release();
        }else{
        getWindow().setFormat(PixelFormat.UNKNOWN);
        MediaPlayer mediaPlayer = MediaPlayer.create(this, R.raw.wildlife);
        SurfaceHolder surfaceHolder = surfaceView.getHolder();

        surfaceHolder.setFixedSize(176, 144);
        surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
        mediaPlayer.setDisplay(surfaceHolder);
        mediaPlayer.start();}
        }catch (Exception e) {
            Toast.makeText(getApplicationContext(), e.getMessage(), Toast.LENGTH_LONG).show();
        }
        break;

    default:
        break;
    }
  }
   }

Following is the code of layout xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >

<SurfaceView
    android:id="@+id/surfaceView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:layout_alignParentLeft="true"
    android:layout_alignParentRight="true"
    android:layout_alignParentTop="true" />

<Button
    android:id="@+id/btnPlay"
    style="?android:attr/buttonStyleSmall"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignRight="@+id/surfaceView1"
    android:layout_alignTop="@+id/surfaceView1"
    android:text="@string/play" />

</RelativeLayout>

please tell me what needs to be done? Thanks in advance.

Solution

You can override the onSizeChanged() function of the SurfaceView class to get and set the size of the view.

protected void onSizeChanged (int w, int h, int oldw, int oldh)

When ever the screen size has changed, this class is called.

As a second alternative, you may be able to set the size by setting the layout parameters (unsure if this works with ScrollView):

@Override
public void surfaceCreated(SurfaceHolder holder) {
    android.view.ViewGroup.LayoutParams lp = this.getLayoutParams();
    lp.width = 1000; // required width
    lp.height = 1000; // required height
    this.setLayoutParams(lp);
}