Android Stop Background Music

Question

EDIT - FOUND A EASY 5-10 LINE SOLUTION!!! See MY OWN ANSWER BELOW!!! YAY!!!!!!!!!

I\'ve searched for 5 hours, dozens of SO posts, no answers, and this seems like t

Answer 1

private static HashMap focus = new HashMap();

public static void check(Context context, boolean hasFocus)
{
    handler.removeMessages(0);
    focus.put(((Activity)context).getLocalClassName(), hasFocus);
    handler.sendEmptyMessageDelayed(0, 500);
}

public static void check(String classname, boolean hasFocus)
{
    handler.removeMessages(0);
    focus.put(classname, hasFocus);
    handler.sendEmptyMessageDelayed(0, 500);
}

private static Handler handler = new Handler()
{
    @Override
    public void handleMessage(Message msg)
    {
        Iterator it = focus.values().iterator();
        while(it.hasNext())
        {
            if(it.next())
                return;
        }
        pause();
        super.handleMessage(msg);
    }
};

this is an manager class methods.

each activity implementing like after code

@Override
public void onWindowFocusChanged(boolean hasFocus)
{
    MusicManager.check(this, hasFocus);
    super.onWindowFocusChanged(hasFocus);
}

I'm using this code with my game which is published and working great.

What part of this code is terrible? and where's better solution? I want to know if exist.

Mike, you answered to me my answer is terrible and not working, What's wrong with this?