Get video size for MediaPlayer by implementing onVideoSizeChanged()

Further work on the exercise "Simple example to play stream video from internet using MediaPlayer" and "Release MediaPlayer in onDestroy() and onPause()", to get video size we can implement onVideoSizeChanged().

• Define your Activity with implements OnVideoSizeChangedListener
• Implement your OnVideoSizeChangedListener(), update SurfaceHolder accordingly by calling its setFixedSize() method
• Register your OnVideoSizeChangedListener by calling mediaPlayer.setOnVideoSizeChangedListener(this)

Modify MainActivity.java

package com.example.androidmediaplayer;

import java.io.IOException;

import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnPreparedListener;
import android.media.MediaPlayer.OnVideoSizeChangedListener;
import android.os.Bundle;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.widget.Toast;
import android.app.Activity;

public class MainActivity extends Activity 
 implements SurfaceHolder.Callback, 
 OnPreparedListener, OnVideoSizeChangedListener{
 
 MediaPlayer mediaPlayer;
 SurfaceHolder surfaceHolder;
 SurfaceView playerSurfaceView;
 String videoSrc = "rtsp://v6.cache1.c.youtube.com/CjYLENy73wIaLQkDsLHya4-Z9hMYDSANFEIJbXYtZ29vZ2xlSARSBXdhdGNoYKX4k4uBjbOiUQw=/0/0/0/video.3gp";

 int videoWidth, videoHeight;
 
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  playerSurfaceView = (SurfaceView)findViewById(R.id.playersurface);

        surfaceHolder = playerSurfaceView.getHolder();
        surfaceHolder.addCallback(this);
 }

 @Override
 public void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2, int arg3) {
  // TODO Auto-generated method stub
  
 }

 @Override
 public void surfaceCreated(SurfaceHolder arg0) {

        try {
         mediaPlayer = new MediaPlayer();
            mediaPlayer.setDisplay(surfaceHolder);
   mediaPlayer.setDataSource(videoSrc);
   mediaPlayer.prepare();
   mediaPlayer.setOnPreparedListener(this);
   mediaPlayer.setOnVideoSizeChangedListener(this);
   mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
  } catch (IllegalArgumentException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (SecurityException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (IllegalStateException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
 }

 @Override
 public void surfaceDestroyed(SurfaceHolder arg0) {
  // TODO Auto-generated method stub
  
 }

 @Override
 public void onPrepared(MediaPlayer mp) {
  surfaceHolder.setFixedSize(videoWidth, videoHeight);
  mediaPlayer.start();
 }

 @Override
 protected void onDestroy() {
  // TODO Auto-generated method stub
  super.onDestroy();
  if (mediaPlayer != null) {
   mediaPlayer.release();
   mediaPlayer = null; 
  }
 }

 @Override
 protected void onPause() {
  // TODO Auto-generated method stub
  super.onPause();
  if (mediaPlayer != null) {
   mediaPlayer.release();
   mediaPlayer = null; 
  }
 }

 @Override
 public void onVideoSizeChanged(MediaPlayer mp, int width, int height) {
  videoWidth = width;
  videoHeight = height;
  Toast.makeText(getApplicationContext(), 
    String.valueOf(videoWidth) + "x" + String.valueOf(videoHeight), 
    Toast.LENGTH_SHORT).show();
  
  if (mediaPlayer.isPlaying()){
   surfaceHolder.setFixedSize(videoWidth, videoHeight);
  }
 }

}

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