使用AVPlayer進行HLS音頻播放時對ControlCenter事件做出反應

Question

我正在尋找一種使用AVPlayer播放音頻（HLS）時從iOS ControlCenter處理播放/暫停事件的方法。

我已經完成所有工作，但是它基於未在頭文件中公開的“命名”通知。

是否有“官方”方式來做到這一點？

當前，以下代碼有效：

- (void) removeControlCenterNotifications
{
    [[UIApplication sharedApplication] endReceivingRemoteControlEvents];
}

- (void) addControlCenterNotifications
{
    [[UIApplication sharedApplication] beginReceivingRemoteControlEvents];

    __weak MyClass     *pWeakSelf   = self;
    __weak MoviePlayer *pWeakPlayer = player_;

    [[NSNotificationCenter defaultCenter] addObserverForName:@"UIApplicationSimpleRemoteActionNotification"
                                                      object:nil
                                                       queue:NULL
                                                  usingBlock:^(NSNotification *notification)
                                                  {
                                                      if(pWeakSelf == nil) return;

                                                      NSNumber *type = notification.userInfo[@"UIApplicationSimpleRemoteActionType"];

                                                      switch ([type intValue]) {
                                                          case 6: [pWeakPlayer play]; break;
                                                          case 7: [pWeakPlayer pause]; break;
                                                      }
                                                  }];
}

Answer 1

解

解決方案是觀看UIEvents進入應用程序並從此處創建我自己的通知。

相關事件類型為：

UIEventTypeRemoteControl

相關事件子類型為：

UIEventSubtypeRemoteControlPlay                 = 100,
UIEventSubtypeRemoteControlPause                = 101,
UIEventSubtypeRemoteControlStop                 = 102,
UIEventSubtypeRemoteControlTogglePlayPause      = 103,
UIEventSubtypeRemoteControlNextTrack            = 104,
UIEventSubtypeRemoteControlPreviousTrack        = 105,
UIEventSubtypeRemoteControlBeginSeekingBackward = 106,
UIEventSubtypeRemoteControlEndSeekingBackward   = 107,
UIEventSubtypeRemoteControlBeginSeekingForward  = 108,
UIEventSubtypeRemoteControlEndSeekingForward    = 109,