Play media on surfaceview using android.media.MediaPlayer

Last exercise "Play the selected video media using build-in media player, by intent with action of Intent.ACTION_VIEW". In this exercise, we will implement our simple MediaPlayer to play the video, in seperated activity.



Implement a new PlayerActivity.java, extends Activity implements SurfaceHolder.Callback.

package com.exercise.AndroidListMedia;

import java.io.IOException;

import android.app.Activity;
import android.graphics.PixelFormat;
import android.media.MediaPlayer;
import android.net.Uri;
import android.os.Bundle;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.media.AudioManager;

public class PlayerActivity extends Activity
 implements SurfaceHolder.Callback {

 Uri targetUri;
 
 MediaPlayer mediaPlayer;
 SurfaceView surfaceView;
 SurfaceHolder surfaceHolder;
 boolean pausing = false;;
 
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  // TODO Auto-generated method stub
  super.onCreate(savedInstanceState);
  setContentView(R.layout.playerlayout);
  
  TextView mediaUri = (TextView)findViewById(R.id.mediauri);
  targetUri = this.getIntent().getData();
  mediaUri.setText(targetUri.toString());
  
  Button buttonPlayVideo = (Button)findViewById(R.id.playvideoplayer);
  Button buttonPauseVideo = (Button)findViewById(R.id.pausevideoplayer);
  
  getWindow().setFormat(PixelFormat.UNKNOWN);
  surfaceView = (SurfaceView)findViewById(R.id.surfaceview);
  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) {
    pausing = false;

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

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

     try {
      mediaPlayer.setDataSource(getApplicationContext(), targetUri);
      mediaPlayer.prepare(); 
     } catch (IllegalArgumentException e) {
      e.printStackTrace();
     } catch (IllegalStateException e) {
      e.printStackTrace();
     } catch (IOException e) {
      e.printStackTrace();
     }
    
     mediaPlayer.start();
    
   }});
  
  buttonPauseVideo.setOnClickListener(new Button.OnClickListener(){

   @Override
   public void onClick(View arg0) {
    // TODO Auto-generated method stub
    if(pausing){
     pausing = false;
     mediaPlayer.start(); 
    }
    else{
     pausing = true;
     mediaPlayer.pause(); 
    }
   }});
 }

 @Override
 protected 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
  
 }

}

Add a new layout file, /res/layout/playerlayout.xml, for the PlayerActivity.java.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"
  android:orientation="vertical" >

  <TextView
      android:id="@+id/mediauri"
      android:layout_width="fill_parent"
      android:layout_height="wrap_content"/>
  <Button
      android:id="@+id/playvideoplayer"
      android:layout_width="fill_parent"
      android:layout_height="wrap_content"
      android:text="- PLAY Video -"/>
  <Button
      android:id="@+id/pausevideoplayer"
      android:layout_width="fill_parent"
      android:layout_height="wrap_content"
      android:text="- PAUSE Video -"/>
  <SurfaceView
      android:id="@+id/surfaceview"
      android:layout_width="fill_parent"
      android:layout_height="wrap_content"/>

</LinearLayout>

Modify the main activity, AndroidListMediaActivity.java, to start PlayerActivity.java once media clicked.

package com.exercise.AndroidListMedia;

import android.app.ListActivity;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.view.View;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;
import android.widget.Toast;

public class AndroidListMediaActivity extends ListActivity {
 
 SimpleCursorAdapter adapter;
 
 final Uri mediaSrc = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
 
  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      String[] from = {
        MediaStore.MediaColumns.TITLE};
      int[] to = {
        android.R.id.text1};
    
      Cursor cursor = managedQuery(
        mediaSrc,
        null,
        null,
        null,
        MediaStore.Audio.Media.TITLE);
    
      adapter = new SimpleCursorAdapter(this,
        android.R.layout.simple_list_item_1, cursor, from, to);
      setListAdapter(adapter);
  }

 @Override
 protected void onListItemClick(ListView l, View v, int position, long id) {
  Cursor cursor = adapter.getCursor();
  cursor.moveToPosition(position);
  
  String _id = cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Media._ID));

  Uri playableUri
   = Uri.withAppendedPath(mediaSrc, _id);
  
  Toast.makeText(this, "Play: " + playableUri.toString(), Toast.LENGTH_LONG).show();

  Intent intent = new Intent();
  intent.setClass(AndroidListMediaActivity.this,
    PlayerActivity.class);
  intent.setData(playableUri);
  startActivity(intent);
 }


}

Finally, modify AndroidManifest.xml, to add the new activity PlayerActivity.

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
  package="com.exercise.AndroidListMedia"
  android:versionCode="1"
  android:versionName="1.0" >

  <uses-sdk android:minSdkVersion="10" />

  <application
      android:icon="@drawable/ic_launcher"
      android:label="@string/app_name" >
      <activity
          android:name=".AndroidListMediaActivity"
          android:label="@string/app_name" >
          <intent-filter>
              <action android:name="android.intent.action.MAIN" />

              <category android:name="android.intent.category.LAUNCHER" />
          </intent-filter>
      </activity>
      <activity
          android:name=".PlayerActivity"
          android:label="@string/app_name" >
      </activity>
  </application>

</manifest>

Download the files.

Next:
- Play media in Fragment, run on Android 3.0 Tablet.