Soundpool is not playing any sound-CodePudding

Im trying to make soundpool work because I need to use it for a prodject. The problem is that it's not playing any sound. Im just trying to play a test sound to see if it works. Hope someone can see what im doing wrong here.

public class MainActivity extends AppCompatActivity {

SoundPool soundPool;
int game_over;

@Override
protected void onCreate(
        Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        AudioAttributes audioAttributes = new AudioAttributes
                .Builder()
                .setUsage(AudioAttributes.USAGE_ASSISTANCE_SONIFICATION)
                .setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
                .build();
        soundPool = new SoundPool
                .Builder()
                .setMaxStreams(4)
                .setAudioAttributes(audioAttributes)
                .build();
    }
    
    game_over = soundPool.load(this, R.raw.test, 1);
    soundPool.setOnLoadCompleteListener(new SoundPool.OnLoadCompleteListener() {
        @Override
        public void onl oadComplete(SoundPool soundPool, int sampleId, int status) {
            soundPool.play(game_over, 1, 1, 1, 1, 1f);
        }
    });
}

}

CodePudding user response：

set up setOnLoadCompleteListener BEFORE load call (which should use sampleId, as game_over may be not assigned yet)

soundPool.setOnLoadCompleteListener(new SoundPool.OnLoadCompleteListener() {
    @Override
    public void onl oadComplete(SoundPool soundPool, int sampleId, int status) {
        soundPool.play(sampleId, 1, 1, 1, 1, 1f);
    }
});
game_over = soundPool.load(this, R.raw.test, 1);

afaik all load methods of SoundPool are synchronous - they are returning ID of already loaded audio file. setting OnLoadCompleteListener AFTER loading audio will cause no call for this listener, as there is nothing more to load

CodePudding user response：

This code is now working. Why it was not playing on my phone was because it was using the system volume and not the music volume. Hope this will help someone else in the future.