iOS彻底删除播放器AVPlayer

关于删除视频播放的问题困扰我一天多时间，写下来记录下！
公司需求类似播放微信朋友圈小视频，只要播放器，点击全屏播放，再次点击移除掉。
在这个频繁的点击添加删除，一旦不移除干净，真的是各种问题
创建的对象如下
@property (nonatomic, strong) AVPlayerLayer *playerLayer;
@property (nonatomic, strong) AVPlayer *player;
这两个必不可少，其他根据需求自行添加
移除的时候，移除自己添加的通知
[self.playerItem removeObserver:self forKeyPath:@"loadedTimeRanges"];
[self.playerItem removeObserver:self forKeyPath:@"playbackBufferEmpty"];
[self.playerItem removeObserver:self forKeyPath:@"playbackLikelyToKeepUp"];
[[NSNotificationCenter defaultCenter]removeObserver:self name:AVPlayerItemDidPlayToEndTimeNotification object:[self.player currentItem]];
移除对象
if (self.player) {
[self pause];
self.playerItem = nil;
self.videoMaskView = nil;
self.currentPlayTime = 0;
[self.player.currentItem cancelPendingSeeks];
[self.player.currentItem.asset cancelLoading];
[self.playerLayer removeFromSuperlayer];
self.totalTime = 0;
self.player = nil;
self.playerLayer = nil;
[self.videoMaskView removeFromSuperview];
[self removeFromSuperview];
}
重点之重～～～～～下边这俩，不然添加的时候，冷不丁的就会出问题
[self.playerLayer removeFromSuperlayer];
self.playerLayer = nil;