android - Android上的Media Player可以一起停止声音

Question

我已经看到很多关于它的提早停止声音的帖子。这不是我的问题。我的问题是...我有这25种声音可以正常工作。摇动手机时，它会讲话，显示文字并具有动画效果，因此该人看起来就像在讲话。起初它工作得很好。我能够重现客户发现的问题的唯一方法是多次摇动它，然后再单击。摇回去并摇晃多次，然后再次单击。当我再次摇动几次后，它突然消失了。偶尔有人会奏效，但如果再回到原位通常会停止发出声音。其他所有功能均应正常运行。有人遇到过吗？任何帮助，将不胜感激。

public class Ask extends Activity{
private SensorManager mSensorManager;
 private ShakeEventListener mSensorListener;
 String[] answer;
 int possibleAnswers, randomAnswer, talkRun=0, last=-1;
 int shake0;
 long lastClick;
 private MediaPlayer mp, sound0;
Context context;
 @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.ask);
        Intent type = getIntent();
        lastClick = type.getLongExtra("lastClick", 0);
        context=this;

        final Random generator = new Random();

        possibleAnswers = 1;
        answer = new String[possibleAnswers];
        answer[0]="***Coughing***";



        //Sounds
        setVolumeControlStream(AudioManager.STREAM_MUSIC); 
        mp = MediaPlayer.create(this, R.raw.askbud);
        mp.start();


        mSensorListener = new ShakeEventListener();
        mSensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
        mSensorManager.registerListener(mSensorListener,
            mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER),
            SensorManager.SENSOR_DELAY_UI);

      final TextView tv = (TextView)findViewById(R.id.answer);


        mSensorListener.setOnShakeListener(new ShakeEventListener.OnShakeListener() {

          public void onShake() {
              if (System.currentTimeMillis() - lastClick > 900) {
                  lastClick = System.currentTimeMillis();



                      randomAnswer = generator.nextInt(possibleAnswers);
                      if(last==randomAnswer)
                          randomAnswer = generator.nextInt(possibleAnswers);

                      animation();

                      if(randomAnswer==0){
                        if(shake0>=1){
                            sound0.reset();
                        }
                        shake0++;
                        sound0 = MediaPlayer.create(context, R.raw.coughing);
                        try {
                            sound0.prepare();
                        } catch (IllegalStateException e) {
                            // TODO Auto-generated catch block
                            e.printStackTrace();
                        } catch (IOException e) {
                            // TODO Auto-generated catch block
                            e.printStackTrace();
                        }
                        sound0.start();
                      }

        });
    }





 @Override
  protected void onResume() {
    super.onResume();
    mSensorManager.registerListener(mSensorListener,
        mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER),
        SensorManager.SENSOR_DELAY_UI);
  }

  @Override
  protected void onStop() {
    mSensorManager.unregisterListener(mSensorListener);
    super.onStop();
  }

}

只是对问题的一点补充。在我听不到声音后，即使关闭并重新打开应用程序，声音仍会继续发生。

Answer 1

好的，这要在注释中发布很多，因此这是您需要使用setDataSource()进行的操作。如果检查docs for setDataSource()，则会看到它需要FileDescriptor。您可以像这样获取Raw资源:

Resources res = getResources();
AssetFileDescriptor afd = res.openRawResourceFd(R.raw.coughing);
FileDescriptor fd = afd.getFileDescriptor();

//assuming existing MediaPlayer mp
mp.reset();
mp.setDataSource(fd);
mp.prepare();
mp.start();