Нужна помощь с кодом MediaPlayer

MediaPlayer mysound1;
MediaPlayer mysound2;
MediaPlayer mysound3;
MediaPlayer mysound4;
private List<MediaPlayer> players = new ArrayList<>();
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    mysound1 = MediaPlayer.create(this, R.raw.asa);
    mysound2 = MediaPlayer.create(this, R.raw.sasa);
    mysound3 = MediaPlayer.create(this, R.raw.asa);
    mysound4 = MediaPlayer.create(this, R.raw.asa);
    players.add(mysound1);
    players.add(mysound2);
    players.add(mysound3);
    players.add(mysound4);
}
public void sound1(View view) {
    mysound1.start();
}
public void sound2(View view) {
    stopAll();
    mysound2.start();
}
public void sound3(View view) {
    stopAll();
    mysound3.start();
}
public void sound4(View view) {
    stopAll();
    mysound4.start();
}
private void stopAll() {
    for (MediaPlayer player : players) {
        player.pause();
        player.seekTo(0);
    }
}

}