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我有 5-6 个视频并将它们设置在滑块中。在从一个视频导航到另一个视频期间一切正常，但有时飞镖会产生以下错误，然后视频无法播放。我正在使用 video_player 标准播放器来播放视频。我在 Visual Studio 代码编辑器的调试控制台中遇到错误。

I/ExoPlayerImpl(30180): Release 80d07 [ExoPlayerLib/2.9.6] [mido, Redmi Note 4, Xiaomi, 24] [goog.exo.core]
I/ExoPlayerImpl(30180): Init d652959 [ExoPlayerLib/2.9.6] [mido, Redmi Note 4, Xiaomi, 24]
I/OMXClient(30180): MuxOMX ctor
I/MediaCodec(30180): [OMX.qcom.video.decoder.avc] setting surface generation to 30904353
I/ExtendedACodec(30180): setupVideoDecoder()
I/ExtendedACodec(30180): vpp-enable search is 0 and value is 0
I/ExtendedACodec(30180): Decoder will be in frame by frame mode
D/SurfaceUtils(30180): set up nativeWindow 0x7f5dbedc10 for 640x362, color 0x7fa30c06, rotation 0, usage 0x2002900
I/OMXClient(30180): MuxOMX ctor
I/ACodec  (30180): codec does not support config priority (err -2147483648)
I/ACodec  (30180): codec does not support config priority (err -2147483648)
D/SurfaceUtils(30180): set up nativeWindow 0x7f5dbedc10 for 640x368, color 0x7fa30c06, rotation 0, usage 0x2002900
E/AudioTrack(30180): AudioFlinger could not create track, status: -12
E/AudioTrack-JNI(30180): Error -12 initializing AudioTrack
E/android.media.AudioTrack(30180): Error code -20 when initializing AudioTrack.
E/ExoPlayerImplInternal(30180): Playback error.
E/ExoPlayerImplInternal(30180): com.google.android.exoplayer2.ExoPlaybackException: com.google.android.exoplayer2.audio.AudioSink$InitializationException: AudioTrack init failed: 0, Config(44100, 12, 56576)
E/ExoPlayerImplInternal(30180):     at com.google.android.exoplayer2.audio.MediaCodecAudioRenderer.processOutputBuffer(MediaCodecAudioRenderer.java:646)
E/ExoPlayerImplInternal(30180):     at com.google.android.exoplayer2.mediacodec.MediaCodecRenderer.drainOutputBuffer(MediaCodecRenderer.java:1355)
E/ExoPlayerImplInternal(30180):     at com.google.android.exoplayer2.mediacodec.MediaCodecRenderer.render(MediaCodecRenderer.java:663)
E/ExoPlayerImplInternal(30180):     at com.google.android.exoplayer2.ExoPlayerImplInternal.doSomeWork(ExoPlayerImplInternal.java:529)
E/ExoPlayerImplInternal(30180):     at com.google.android.exoplayer2.ExoPlayerImplInternal.handleMessage(ExoPlayerImplInternal.java:300)
E/ExoPlayerImplInternal(30180):     at android.os.Handler.dispatchMessage(Handler.java:98)
E/ExoPlayerImplInternal(30180):     at android.os.Looper.loop(Looper.java:165)
E/ExoPlayerImplInternal(30180):     at android.os.HandlerThread.run(HandlerThread.java:61)
E/ExoPlayerImplInternal(30180): Caused by: com.google.android.exoplayer2.audio.AudioSink$InitializationException: AudioTrack init failed: 0, Config(44100, 12, 56576)
E/ExoPlayerImplInternal(30180):     at com.google.android.exoplayer2.audio.DefaultAudioSink.initializeAudioTrack(DefaultAudioSink.java:1128)
E/ExoPlayerImplInternal(30180):     at com.google.android.exoplayer2.audio.DefaultAudioSink.initialize(DefaultAudioSink.java:532)
E/ExoPlayerImplInternal(30180):     at com.google.android.exoplayer2.audio.DefaultAudioSink.handleBuffer(DefaultAudioSink.java:593)
E/ExoPlayerImplInternal(30180):     at com.google.android.exoplayer2.audio.MediaCodecAudioRenderer.processOutputBuffer(MediaCodecAudioRenderer.java:640)
E/ExoPlayerImplInternal(30180):     ... 7 more
I/ExoPlayerImpl(30180): Release d652959 [ExoPlayerLib/2.9.6] [mido, Redmi Note 4, Xiaomi, 24] [goog.exo.core]

我已经花了 10 多个小时来解决这个简单的问题，但还没有成功。

请建议我是什么问题以及我们如何解决它。非常感谢。

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1 回答 1

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我已经解决了这个问题。当您调用 dispose 时，VideoPlayer 小部件仍在使用您的控制器。首先，您需要确保不再使用它（将状态中的控制器设置为 null）并且在您调用 dispose 之后。

我不确定您通过 Provider 进行的状态管理，但我将举一个示例，说明如何使用常规状态执行此操作。

VideoPlayerController _controller;

  void _initController(String link) {
    _controller = VideoPlayerController.network(link)
      ..initialize().then((_) {
        setState(() {});
      });
  }

  Future<void> _onControllerChange(String link) async {
    if (_controller == null) {
      // If there was no controller, just create a new one
      _initController(link);
    } else {
      // If there was a controller, we need to dispose of the old one first
      final oldController = _controller;

      // Registering a callback for the end of next frame
      // to dispose of an old controller
      // (which won't be used anymore after calling setState)
      WidgetsBinding.instance.addPostFrameCallback((_) async {
        await oldController.dispose();

        // Initing new controller
        _initController(link);
      });

      // Making sure that controller is not used by setting it to null
      setState(() {
        _controller = null;
      });
    }
  }

这个解决方案对我有用。谢谢。

于 2020-11-23T12:03:08.793 回答