How to play mp3 continuosly when application starts and stop when user close app in background

Question

I am writing an app in which i am allowing user to view images and select one of them to set an WALLPAPER, and in this i also want to play an mp3 when user starts an App and sto

Answer 1

This part has to be in EVERY activity's onPause:

Stop music automatically when user exit from app

public void onPause(){
super.onPause();
    Context context = getApplicationContext();
            ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
            List taskInfo = am.getRunningTasks(1);
            if (!taskInfo.isEmpty()) {
              ComponentName topActivity = taskInfo.get(0).topActivity; 
              if (!topActivity.getPackageName().equals(context.getPackageName())) {
               StopPlayer();
                Toast.makeText(xYourClassNamex.this, "YOU LEFT YOUR APP. MUSIC STOP", Toast.LENGTH_SHORT).show();
              }
            }
  }

This part has to be in EVERY activity's onResume:

Play music automatically when user resume the app

Public void onResume()
    {
       super.onResume();
     StartPlayer();
    }

You can put your Player functionalty in global class. where every class can call it's player. so your plyer will be remain same in whole application. & you can start or stop it. on Pause method it will detect wether user left this App or not. if user left from the app so u can stop it.

GlobalPlayer.class

public MediaPlayer mPlayer;

public void StartPlayer(){
MediaPlayer mediaPlayer = MediaPlayer.create(context, R.raw.music_file);


            // TODO Auto-generated method stub
            mPlayer = MediaPlayer.create(getApplicationContext(),R.raw.mymusic.mp3);
            mPlayer.start();//Start playing the music

}
public void StopPlayer(){
            if(mPlayer!=null && mPlayer.isPlaying()){//If music is playing already
                mPlayer.stop();//Stop playing the music
          }
}