WARN / AudioFlinger(33):写入被阻止76毫秒,7773延迟写入,线程0xb3f0

时间:2011-09-14 20:11:00

标签: android android-mediaplayer

我已经创建了一项意向服务,可以在后台为我的应用启动音乐。

它正在工作,但我的log-cat充满了消息:

09-14 16:46:30.117:WARN / AudioFlinger(33):写入被阻止76毫秒,7773延迟写入,线程0xb3f0 并没有其他任何东西被记录。

这是我的IntentService:

import android.app.IntentService;
import android.content.Intent;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnErrorListener;
import android.widget.Toast;

public class MusicService extends IntentService {

    MediaPlayer mPlayer;
    private OnErrorListener mErrorListener;

    public MusicService() {
        super("MusicService");
        // TODO Auto-generated constructor stub
    }

    @Override
    protected void onHandleIntent(Intent intent) {
        // TODO Auto-generated method stub
          // Normally we would do some work here, like download a file.


    }   

    ///////////////////////////////////////////////////////////

    @Override
    public int onStartCommand (Intent intent, int flags, int startId)

    {
        Toast.makeText(this, "service starting", Toast.LENGTH_SHORT).show();
        mPlayer.setLooping(true);
        mPlayer.start();

        return super.onStartCommand(intent,flags,startId);


    }

    @Override

    public void onCreate ()

    {
        super.onCreate();
      //  try{
            mPlayer = MediaPlayer.create(this, R.raw.jingle);
        //}catch (IllegalArgumentException e) {
            //e.printStackTrace();
        //}catch (IllegalStateException e ) {
            //e.printStackTrace();
        //}

        if(mPlayer!= null)
        {
            mPlayer.setLooping(true); // Set looping
            mPlayer.setVolume(100,100);
        }


    mPlayer.setOnErrorListener(new OnErrorListener() {

        public boolean onError(MediaPlayer mp, int what, int extra) {
            // TODO Auto-generated method stub
            onPlayError();
            return true;
        }

    });


    }

    private void onPlayError() {
        Toast.makeText(this, "music player failed", Toast.LENGTH_SHORT).show(); 
        if(mPlayer != null)
        {
            try{
                mPlayer.stop();
                mPlayer.release();
            }finally {
                mPlayer = null;
            }
        }
    }

1 个答案:

答案 0 :(得分:-2)

需要权限。将它们放在AndroidManifest.xml中:

<uses-sdk android:minSdkVersion="8" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />

我在android模拟器2.2下测试了它,所以我的minSdkVersion是8。