Question

Lets say I have several players I’ve created.
And Lets say that for each one of them, I want a different set on actions to be activated.

How can I locate which player has been finished (the implementation itself of the case sentence) in order to act differently for each player ?

For example: in order to handle a single player, all we have to do is to implement the onCompletion() method like this:

public void onCompletion(MediaPlayer mp){
    //DO SOMETHING HERE THAT FITS FOR ALL KINDS OF PLAYER'S TYPE OBJECTS
}

How do I add a case sentence to expand it to handle several different player objects ?

Thanks !

Answer 1

The MediaPlayer attribute passed to this method is the same MediaPlayer that has just completed, so as long as you are keeping a pointer to each media player (such as through a global variable), then all you need to do is check which media player you have received:

public class MyClass implements OnClompleteListener 
{
    MediaPlayer player1, player2, player3;
    //initialize them
    player1.setOnCompleteListener(this);
    player2.setOnCompleteListener(this);
    player3.setOnCompleteListener(this);

    @Override
    public void onCompletion(MediaPlayer mp)
    {
        if (mp == player1)
        {
            //TODO handle player 1 completion
        }
        else if (mp == player2)
        {
            //TODO handle player 2 completion
        }
        else if (mp == player3)
        {
            //TODO handle player 3 completion
        }
    }
}

You can also handle this in-line, without implementing the OnCompleteListener:

player1.setOnCompleteListener(new OnCompleteListener() {

    @Override
    public void onCompletion(MediaPlayer mp)
    {
        //mp IS ALWAYS EQUAL TO player1!
    }
});