Android Stop Background Music

I'm very happy today, and still have hair :) I've tested this and it works!!!

First, add this to your Manifest:

<uses-permission android:name="android.permission.GET_TASKS"/>

Second, add this to your 'Home/Main' Activity/Class:

  @Override
  protected void onPause() {
    if (this.isFinishing()){ //basically BACK was pressed from this activity
      player.stop();
      Toast.makeText(xYourClassNamex.this, "YOU PRESSED BACK FROM YOUR 'HOME/MAIN' ACTIVITY", Toast.LENGTH_SHORT).show();
    }
    Context context = getApplicationContext();
    ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
    List<RunningTaskInfo> taskInfo = am.getRunningTasks(1);
    if (!taskInfo.isEmpty()) {
      ComponentName topActivity = taskInfo.get(0).topActivity; 
      if (!topActivity.getPackageName().equals(context.getPackageName())) {
        player.stop();
        Toast.makeText(xYourClassNamex.this, "YOU LEFT YOUR APP", Toast.LENGTH_SHORT).show();
      }
      else {
        Toast.makeText(xYourClassNamex.this, "YOU SWITCHED ACTIVITIES WITHIN YOUR APP", Toast.LENGTH_SHORT).show();
      }
    }
    super.onPause();
  }

And obviously replace xYourClassNamex with, well, Your Class Name :)

Now obviously you do not need the "Toasts" but it will tell you what is going on. The very intersting thind is when you press BACK from your 'Home/Main' activity, you obviously get 2 Toasts, "YOU PRESSED BACK FROM YOUR 'HOME/MAIN' ACTIVITY", and the 2nd Toast is "YOU SWITCHED ACTIVITIES WITHIN YOUR APP". I believe I know why this happens, but it doesn;t matter because I call "player.stop();" from the 2 scenarios that mean my app is no longer being 'used'. Obviously do more work than "player.stop();" if you need to :) And also obvious you dont need the "else" for "YOU SWITCHED ACTIVITIES WITHIN YOUR APP", because there is no reason to "stop/pause" the background music, which is what i needed, but if you DO need to do something when new activities are started, well here you go :)

Hope this helps anyone looking to know when the user "leaves/exits/is done with" the app :)

THANKS FOR ALL OF THE COMMENTS POSTS AND HELP EVERYONE!!! YAY!

EDIT-

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

Context context = getApplicationContext();
        ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
        List<RunningTaskInfo> taskInfo = am.getRunningTasks(1);
        if (!taskInfo.isEmpty()) {
          ComponentName topActivity = taskInfo.get(0).topActivity; 
          if (!topActivity.getPackageName().equals(context.getPackageName())) {
            player.stop();
            Toast.makeText(xYourClassNamex.this, "YOU LEFT YOUR APP", Toast.LENGTH_SHORT).show();
          }
        }

so you'll know if the user left your app from ANY of the activities. this is good to know :)

The way the media player works is that its runs as a service and then is stopped MANUALLY when the user stops it in the application itself.

Example:

When the media player is playing a song and the user hits home, obviously the user still wants to listen to the song as its a background task. After the user is done listening then the user manually stops it by going into the application and stopping (Aka stopping the service that is playing the song) it or if the playlist is done, then stop. Simple.

This is the expected behavior. And it is exactly how the Music App works.

UPDATE

@Override
    protected void onPause() {
        super.onPause();
        if (this.isFinishing()){
            player.stop();
        }
    }

Needs to be changed to

@Override
    protected void onPause() {
        super.onPause();
        if (mediaPlayer != null){
            mediaPlayser.stop();
            if (isFinishing()){
            mediaPlayer.stop();
            mediaPlayer.release();
            }
        }
    }

An explanation:

The reason we are checking for the object not being null is obvious. However; when we enter the pause, we want to ensure that the mediaplayer is stopping. BUT if we are leaving and the song is almost done, then stop it and release it.

UPDATE 2

Check the link here:

https://stackoverflow.com/a/6704844/529691

This can be used to detect if your application has been moved out of the current tip of the application stack.

I faced same problem. I will tell you my solution. I overrided onStop, onStart each activity and counted my started activity with some delay and count reaches zero, I paused music.