Question

我正在尝试从我的Android应用程序（目标5.0+）播放.opus媒体文件。该文件的来源是设备外部存储。

MediaPlayer继续抛出“java.io.IOException：Prepare failed：status = 0x1”。要注意我能够播放其他文件类型，如mp3和aac

注意：已授予READ_EXTERNAL_STORAGE权限。

提前谢谢。

位于Android Fragment内的部分代码：

    public void playVoiceNote(VoiceNoteBO voiceNoteBO){
    try{

        Uri myUri = Uri.fromFile(new File(voiceNoteBO.getFileName()));  //this resolves to the full path of the file.

        MediaPlayer mediaPlayer = new MediaPlayer();
        mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
        mediaPlayer.setDataSource(getActivity().getApplicationContext(), myUri);
        mediaPlayer.prepare();
        mediaPlayer.start();

    }catch(Exception e){
        //TODO
        e.printStackTrace();

    }
}

堆栈跟踪：

06-04 18:31:46.129 1134-27920/? E/GenericSource: Failed to init from data source!
06-04 18:31:46.129 27425-27443/? E/MediaPlayer: error (1, -2147483648)
06-04 18:31:46.129 27425-27425/? W/System.err: java.io.IOException: Prepare failed.: status=0x1
06-04 18:31:46.130 27425-27425/? W/System.err:     at android.media.MediaPlayer._prepare(Native Method)
06-04 18:31:46.130 27425-27425/? W/System.err:     at android.media.MediaPlayer.prepare(MediaPlayer.java:1135)
06-04 18:31:46.130 27425-27425/? W/System.err:     at com.frankyapps.privateread.prws.fragments.VoiceNotesFragment.playVoiceNote(VoiceNotesFragment.java:166)
06-04 18:31:46.130 27425-27425/? W/System.err:     at com.frankyapps.privateread.prws.fragments.VoiceNotesFragment$1.onClick(VoiceNotesFragment.java:76)
06-04 18:31:46.130 27425-27425/? W/System.err:     at com.frankyapps.privateread.prws.fragments.VoiceNotesFragment$RecyclerTouchListener.onInterceptTouchEvent(VoiceNotesFragment.java:217)
06-04 18:31:46.130 27425-27425/? W/System.err:     at android.support.v7.widget.RecyclerView.dispatchOnItemTouch(RecyclerView.java:2261)
06-04 18:31:46.130 27425-27425/? W/System.err:     at android.support.v7.widget.RecyclerView.onTouchEvent(RecyclerView.java:2389)
06-04 18:31:46.130 27425-27425/? W/System.err:     at android.view.View.dispatchTouchEvent(View.java:8471)

Answer 1

尝试使用create（）方法创建MediaPlayer对象。这就是你如何做到的：

MediaPlayer mediaPlayer = MediaPlayer.create(context, myUri);
mediaPlayer.start();

无需调用prepare（）方法（如果使用create（）实例化MediaPlayer对象），因为create（）将由create（）隐式调用。

此链接可以帮助您确定：https://developer.android.com/reference/android/media/MediaPlayer.html

Android 5.0+ MediaPlayer在尝试播放OPUS文件时抛出PreparedFailed异常

1 个答案: