MediaPlay on SurfaceView: correct aspect ratio

Last exercise "Play media in Fragment, run on Android 3.0 Tablet", the layout width and height is in-correct. It will be aligned in this exercise to correct the aspect ration.




First, modify playerlayout.xml to change both layout_width and layout_height of the SurfaceView to "fill_parent". And also layout_gravity="center".

    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >
    
            android:id="@+id/mediauri"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"/>
            android:id="@+id/playvideoplayer"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="- PLAY Video -"/>
            android:id="@+id/pausevideoplayer"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="- PAUSE Video -"/>
            android:id="@+id/surfaceview"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_gravity="center" />

Modify PlayerFragmen.java to add the code marked "Handle aspect ratio".

package com.exercise.AndroidListMedia;

import java.io.IOException;

import android.app.Fragment;
import android.graphics.PixelFormat;
import android.media.MediaPlayer;
import android.net.Uri;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import android.media.AudioManager;

public class PlayerFragment extends Fragment 
 implements SurfaceHolder.Callback {

 Uri targetUri = null;
 
 MediaPlayer mediaPlayer;
 SurfaceView surfaceView;
 SurfaceHolder surfaceHolder;
 boolean pausing = false;
 
 TextView mediaUri;
 Button buttonPlayVideo, buttonPauseVideo;
 
 @Override
 public View onCreateView(LayoutInflater inflater, ViewGroup container,
   Bundle savedInstanceState) {
  // TODO Auto-generated method stub
  View view = inflater.inflate(R.layout.playerlayout, container, false);
  mediaUri = (TextView)view.findViewById(R.id.mediauri);
  buttonPlayVideo = (Button)view.findViewById(R.id.playvideoplayer);
  buttonPauseVideo = (Button)view.findViewById(R.id.pausevideoplayer);
  surfaceView = (SurfaceView)view.findViewById(R.id.surfaceview);
  
  getActivity().getWindow().setFormat(PixelFormat.UNKNOWN);
  surfaceHolder = surfaceView.getHolder();
  surfaceHolder.addCallback(this);
  surfaceHolder.setFixedSize(176, 144);
  surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
  mediaPlayer = new MediaPlayer();
  

  buttonPlayVideo.setOnClickListener(new Button.OnClickListener(){

   @Override
   public void onClick(View arg0) {
    
    if(targetUri != null){

     pausing = false;

      if(mediaPlayer.isPlaying()){
       mediaPlayer.reset();  
      }

      mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
      mediaPlayer.setDisplay(surfaceHolder);

      try {
       mediaPlayer.setDataSource(getActivity().getApplicationContext(), targetUri);
       mediaPlayer.prepare();        
      } catch (IllegalArgumentException e) {
       e.printStackTrace();
       Toast.makeText(getActivity(), e.toString(), Toast.LENGTH_LONG).show();
      } catch (IllegalStateException e) {
       e.printStackTrace();
       Toast.makeText(getActivity(), e.toString(), Toast.LENGTH_LONG).show();
      } catch (IOException e) {
       e.printStackTrace();
       Toast.makeText(getActivity(), e.toString(), Toast.LENGTH_LONG).show();
      }
      
      /*
       *  Handle aspect ratio
       */
      int surfaceView_Width = surfaceView.getWidth();
      int surfaceView_Height = surfaceView.getHeight();

      float video_Width = mediaPlayer.getVideoWidth();
      float video_Height = mediaPlayer.getVideoHeight();

      float ratio_width = surfaceView_Width/video_Width;
      float ratio_height = surfaceView_Height/video_Height;
      float aspectratio = video_Width/video_Height;

      LayoutParams layoutParams = surfaceView.getLayoutParams();
      
      if (ratio_width > ratio_height){
       layoutParams.width = (int) (surfaceView_Height * aspectratio);
       layoutParams.height = surfaceView_Height;
      }else{
       layoutParams.width = surfaceView_Width;
       layoutParams.height = (int) (surfaceView_Width / aspectratio);
      }

      surfaceView.setLayoutParams(layoutParams);
      /*
       * 
       */
      
      mediaPlayer.start();
    }
    
   }});
  
  buttonPauseVideo.setOnClickListener(new Button.OnClickListener(){

   @Override
   public void onClick(View arg0) {
    if(targetUri != null){
     if(pausing){
      pausing = false;
      mediaPlayer.start(); 
     }
     else{
      pausing = true;
      mediaPlayer.pause(); 
     }
    }
   }});
  
  return view;
 }

 @Override
 public void onCreate(Bundle savedInstanceState) {
  // TODO Auto-generated method stub
  super.onCreate(savedInstanceState);
 }

 @Override
 public void onDestroy() {
  // TODO Auto-generated method stub
  super.onDestroy();
  mediaPlayer.release();
 }

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

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

 @Override
 public void surfaceDestroyed(SurfaceHolder arg0) {
  // TODO Auto-generated method stub
  
 }
 
 public void setTargetUri(Uri u){
  targetUri = u;
  mediaUri.setText(u.toString());
 }

}

Download the files.


Next:
- Get Thumbnail of video