Java – how to make Android media player play sound?

I don't know why it doesn't work. There are no recording errors in logcat, but I can't hear the sound

public static void DeclararSonido(int numero,Context contexto){
    switch(numero){
    case 0:
        mp = MediaPlayer.create(contexto,R.raw.alan);
        break;          
    }
}

public static void TocarPiedra( int posicion,Context contexto){
    DeclararSonido(posicion,contexto);


    mp.start();
    mp.stop();
    mp.release();
}
public static void TocarSirena(Context contexto){
    MediaPlayer mp2= MediaPlayer.create(contexto,R.raw.doh);


    mp2.start();
    mp2.stop();
    mp2.release();

}

If I erase MP2 stop(); And MP2 release(); AND mp. stop(); And MP release(); The application plays a sound, but the file is not published

Solution

Of course you don't want to start right away and then stop right away

The problem is that you are following these steps:

mp.start();      // starts playback
mp.stop();       // .. then stops immediately ..
mp.release();

You should call start and release it when the sound finishes playing You can use completion event to hook up the listener and release it there:

mp.setOnCompletionListener(new MediaPlayer.OnCompletionListener(){
    public void onCompletion(MediaPlayer player) {
       player.release();          
    }
})