使用过程一些问题修改，大佬请查阅

[lewic1987]

三、ExoPlayback类 1.解决播放错误后自动切换下一首问题 修改后： override fun onPlayerStateChanged(playWhenReady: Boolean, playbackState: Int) { //lewic修改，播放失败时候exo会回调onPlayerError， // 同时也会回调onPlayerStateChanged playbackState = STATE_IDLE //去除这种情况处理，防止出错后走到完成回调继续播放下一首 if (playbackState == Player.STATE_IDLE && isError){ isError = false return } isError = false

override fun onPlayerError(error: ExoPlaybackException) { error.printStackTrace() isError = true

修改前： 无以上逻辑

四、PlayerControlImpl类 1.解决LiveData postValue 数据丢失的问题 onPlaybackStateUpdated方法修改前： playbackState.postValue(playbackStage)

修改后： //lewic修改 修复LiveData postValue 数据丢失的问题 LiveDataUtils.setValue(playbackState,playbackStage)

其他playbackState.postValue的地方修改同上

LiveDataUtils类： public class LiveDataUtils { private static Handler sMainHandler; /**

• 用 setValue 更新 MutableLiveData 的数据，如果在子线程，就切换到主线程 */ public static void setValue(MutableLiveData mld, T d) { if (mld == null) { return; } if (Thread.currentThread() == Looper.getMainLooper().getThread()) { mld.setValue(d); } else { postSetValue(mld, d); } }

  /**

• 向主线程的 handler 抛 SetValueRunnable */ private static void postSetValue(MutableLiveData mld, T d) { if (sMainHandler == null) { sMainHandler = new Handler(Looper.getMainLooper()); } sMainHandler.post(SetValueRunnable.create(mld, d)); }

  private static class SetValueRunnable implements Runnable { private final MutableLiveData liveData; private final T data;

  private SetValueRunnable(@NonNull MutableLiveData<T> liveData, T data) {
      this.liveData = liveData;
      this.data = data;
  }
  
  @Override
  public void run() {
      liveData.setValue(data);
  }
  
  public static <T> SetValueRunnable<T> create(@NonNull MutableLiveData<T> liveData, T data) {
      return new SetValueRunnable<>(liveData, data);
  }

  } }

[EspoirX]

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