MediaPlayer and map issues android app (noob question)

I'm just learning here. I'm trying to make a soundboard 开发者_JAVA技巧with around forty sounds, but I'm having some trouble how to get it to work using a maphash. Can anyone save me?

--------------soundboard-------------------------

import android.app.Activity;
import android.content.Intent;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageButton;
import java.util.HashMap;
import java.util.Map;

public class main extends Activity {

MediaPlayer mp=null;

\\\if I put put "MediaPlayer mp;" here it only plays one sound\\\

ImageButton Button;

@Override
protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    Map<Integer, Integer> map = new HashMap<Integer, Integer>();
    map.put(R.id.button1, R.raw.sound1);
    map.put(R.id.button2, R.raw.sound2);

    for (Map.Entry<Integer, Integer> entry : map.entrySet()) {
        mp = MediaPlayer.create(this, entry.getValue()); 


 \\\if I put "final MediaPlayer mp = MediaPlayer.create(this, entry.getValue());" here I cant stop MediaPlayer with onpause and onstop overrides.\\\


        ImageButton button = (ImageButton) findViewById(entry.getKey());
        button.setOnClickListener(new View.OnClickListener() {

            public void onClick(View v) {
                mp.start();
            }

        });
    }
}

    @Override
    protected void onStop() {
        super.onStop();
        if(mp.isPlaying()){ 
            mp.stop();
            mp.release();
        }
    }

    @Override
     public void onDestroy(){
     super.onDestroy();
        mp.release();
    }

}

As I suggested in your previous question, don't create all those mediaplayer instances, for two reasons:

1. You lose all instances and have only the last one. always.
2. The onCreate() become very long method for no reason.

instead, remove mp = MediaPlayer.create(this, entry.getValue()); from your for loop, and move it to inside of your listener, something like that (not tested...):

button.setOnClickListener(new View.OnClickListener() {
     public void onClick(View v) {
            int sound = map.get(v.getId());
            mp = MediaPlayer.create(main.this, sound);
            mp.start();
        }
    });

So you would create the mediaplayer instance only when needed.

BTW, main is not a good name for a class.