安卓播放视频文件的问题

E/MediaPlayer: Should have subtitle controller already set
E/MediaPlayer: error (1, -38)
E/MediaPlayer: Error (1,-38)
E/MediaPlayer: error (1, -38)

W/System.err: java.lang.IllegalStateException
W/System.err: at android.media.MediaPlayer.prepareAsync(Native Method)
W/System.err: at com.example.administrator.viewpager.Video.PlayVideo$override.play(PlayVideo.java:181)
W/System.err: at com.example.administrator.viewpager.Video.PlayVideo$override.access$dispatch(PlayVideo.java)
W/System.err: at com.example.administrator.viewpager.Video.PlayVideo.play(PlayVideo.java:0)
W/System.err: at com.example.administrator.viewpager.Video.PlayVideo$6$override.onError(PlayVideo.java:230)
W/System.err: at com.example.administrator.viewpager.Video.PlayVideo$6$override.access$dispatch(PlayVideo.java)
W/System.err: at com.example.administrator.viewpager.Video.PlayVideo$6.onError(PlayVideo.java:0)

设置字幕的代码有问题，贴出你的代码。