I am playing sounds in my application I have the following code

sounds = new HashMap<String, MediaPlayer>();

Then when guys are created on screen they are given a sound.

sounds.put("sounds"+Integer.toString(ncount), MediaPlayer.create(this, R.raw.hit));

I want to remove the MediaPlayer from the hashmap like I do the enemies when they die

sounds.get("sounds"+Integer.toString(ncount)).setOnCompletionListener( new MediaPlayer.OnCompletionListener() {

    public void onCompletion(MediaPlayer mp) {



This errors out... how would I reference the sounds hashmap to remove the associated MediaPlayer when sound is complete?


  • 3
    \$\begingroup\$ What error are you getting? \$\endgroup\$ Oct 15, 2010 at 22:23
  • 4
    \$\begingroup\$ Additionally, some of your questions are purely programming questions and not particularly about game development. Since the number of Android developers on this site is still low, you might want to try asking on StackOverflow \$\endgroup\$ Oct 15, 2010 at 22:26

2 Answers 2


Use a SoundPool


Is ncount a static variable? If that's the case it is very likely that ncount has changed when onCompletion gets called (because ncount was modified during playing of the sound). You should probably use another method to build that identifier...


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