SoundPool不播放mp3？

Question

我正在尝试用SoundPool执行一个mp3文件.我用SoundPool.load加载了mp3,但是当我尝试使用SoundPool.play不起作用而且没有抛出任何异常.我正在使用API​​21.

我该如何解决？

我正在尝试这个.

public class CustomSoundPool {

    //SDK Version
    public SoundPool getSoundPool(){
        SoundPool sounds = null;

        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP){
            AudioAttributes attributes = new AudioAttributes.Builder()
            .setUsage(AudioAttributes.USAGE_GAME)
            .setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
            .build();

            sounds = new SoundPool.Builder()
            .setAudioAttributes(attributes)
            .build();
        }else{
            sounds = new SoundPool(5,AudioManager.STREAM_MUSIC,0);
        }
        return sounds;
    }

}




 /** play sound with error or success */
        private void playSound(){
            SoundPool sound = new CustomSoundPool().getSoundPool();
            if(resposta.getValor() == 1){
                int soundId = sound.load(getView().getContext(), R.raw.sucesso, 1);
                sound.play(soundId, 1, 1, 0, 0, 1);
            }else{
                int soundId = sound.load(getView().getContext(), R.raw.erro, 1);
                sound.play(soundId, 1, 1, 0, 0, 1);
            }
            sound.release();            
        }

Answer 1

你发布SoundPool得太早了.稍后发布,即以onDestroy方法发布Activity.现在,SoundPool在释放对象使用的所有内存和本机资源之前,声音将没有足够的时间播放.此外,你试图在它实际设法加载之前快速播放声音.play在加载声音之前无法使用.使用SoundPool.OnLoadCompleteListener#onLoadComplete等到声音加载并且内部听众播放您的声音.

SoundPool soundPool;
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
     AudioAttributes attributes = new AudioAttributes.Builder()
          .setUsage(AudioAttributes.USAGE_GAME)
          .setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
          .build();

          soundPool = new SoundPool.Builder()
                        .setAudioAttributes(attributes)
                        .build();       
}
else {
    soundPool = new SoundPool(10, AudioManager.STREAM_MUSIC, 0);
}
soundPool.setOnLoadCompleteListener(new SoundPool.OnLoadCompleteListener() {
    @Override
    public void onLoadComplete(SoundPool soundPool, int sampleId, int status) {
        soundPool.play(sampleId, 1.0f, 1.0f, 0, 0, 1.0f);
    }
});
soundPool.load(this, R.raw.sucesso, 1);