Question

我想播放.mp3重复说5-10次，因为一旦选择了该项，一首歌应该重复播放5次。

使用SoundPool是没有好处的，因为这首歌只播放5秒钟。我希望这首歌完全播放并再次重复。
当媒体播放器的Setlooping无限期播放歌曲时。

是否有可能无时间播放歌曲，并且在应用程序启动之前不会以编程方式定义任何时间。请任何帮助。

public class BackgroundAudioService extends Service implements MediaPlayer.OnPreparedListener, MediaPlayer.OnCompletionListener {

    MediaPlayer mp;
    SoundPool loopChant;
    int itempositionno;
    int soundID, i;
    Uri path;
    Intent playbackServiceIntent;
    BackgroundAudioService instanceService;

    public BackgroundAudioService() {
        Log.d(this.getClass().getName(), "Background method called");
    }

    @Override
    public void onCreate() {
        Log.d(this.getClass().getName(), "onCreate method called");
        instanceService = this;
        super.onCreate();
    }

    @Override
    public IBinder onBind(Intent intent) {
        Log.d(this.getClass().getName(), "onBind method called");
        int itempositionno = intent.getIntExtra("Itempositionno", 0);
        this.itempositionno = itempositionno;
        if (mp == null ){
            mp = new MediaPlayer();}
        setSongAtPosition(itempositionno);
        return new LocalBinder();
    }

    public void setSongAtPosition(int position){
        Log.d(this.getClass().getName(), "setSongAtPosition method called");
        itempositionno = position;
        Uri path = null;
        switch (itempositionno){
            case 0:{
                path = Uri.parse("android.resource://" + getPackageName() + "/" + R.raw.shiva);
                break;
            }
            case 1:{
                path = Uri.parse("android.resource://" + getPackageName() + "/" + R.raw.perumal);
                break;
            }
            case 2:{
                path = Uri.parse("android.resource://" + getPackageName() + "/" + R.raw.ganesh);
                break;
            }
            case 3:{
                path = Uri.parse("android.resource://" + getPackageName() + "/" + R.raw.muruga);
                break;
            }
            case 4:{
                path = Uri.parse("android.resource://" + getPackageName() + "/" + R.raw.iyyappa);
                break;
            }
            case 5:{
                path = Uri.parse("android.resource://" + getPackageName() + "/" + R.raw.hanuman);
                break;
            }
            case 6:{
                path = Uri.parse("android.resource://" + getPackageName() + "/" + R.raw.gayathri);
                break;
            }
            case 7:{
                path = Uri.parse("android.resource://" + getPackageName() + "/" + R.raw.aigiri);
                break;
            }
            case 8:{
                path = Uri.parse("android.resource://" + getPackageName() + "/" + R.raw.saibaba);
                break;
            }
            case 9:{
                path = Uri.parse("android.resource://" + getPackageName() + "/" + R.raw.om);
                break;
            }
        }
        if(mp.isPlaying()) {
            mp.release();
        }
        mp = MediaPlayer.create(BackgroundAudioService.this, path);
        mp.setOnPreparedListener(BackgroundAudioService.this);
        if (itempositionno == 1){
            setLoopChant();
        }
    }

    @Override
    public void onPrepared(MediaPlayer mp) {
        Log.d(this.getClass().getName(), "onPrepared method called");
        mp.start();
    }

    @Override
    public void onCompletion(MediaPlayer mp) {
        Log.d(this.getClass().getName(), "onCompletion method called");
    }

    class LocalBinder extends Binder{
        public BackgroundAudioService getService(){
            Log.d(this.getClass().getName(), "LocalBinder method called");
            return instanceService;
        }

    }

    public void setLoopChant(){
        Log.d(this.getClass().getName(), "setLoopChant method called");
        mp.setLooping(true);
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        Log.d(this.getClass().getName(), "onStartCommand method called");
        return super.onStartCommand(intent, flags, startId);
    }

    @Override
    public void onDestroy() {
        Log.d(this.getClass().getName(), "onDestroy method called");
        mp.release();
        super.onDestroy();
    }

}

Answer 1

您的代码甚至无法播放一次媒体。你忘了打电话了

mp.prepareAsync();

在您设置DataSource之后。

为什么要两次创建MediaPlayer？我建议在新的MediaPlayer（）之后将setOnPreparedListener移动到该行。

if (mp == null ){
  mp = new MediaPlayer();
  mp.setOnPreparedListener(BackgroundAudioService.this);
}

然后在setDataSource之后调用prepareAsync。替换行：

mp = MediaPlayer.create(BackgroundAudioService.this, path);

与

mp.setDataSource(path);
mp.prepareAsync();

如何在android中重复播放.mp3文件？

1 个答案: