请帮助我找到最佳解决方案，因为它开始令人讨厌。 我使用AVPlayer从URL播放广播，也使用AVPlayerItem获取播放器的状态和元数据标题。只是在iOS 10上出现了这种麻烦（在IOS 11上很好），当我快速按下PLAY / PAUSE按钮时，我的应用因崩溃而崩溃：
keyCode = modalIsOpen || e.keyCode
所以我的跟随代码播放：
*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'An instance 0x165c3830 of class AVPlayerItem was deallocated while key value observers were still registered with it. Current observation info: <NSKeyValueObservationInfo 0x1669d390> (
<NSKeyValueObservance 0x165c48c0: Observer: 0x1659e1a0, Key path: timedMetadata, Options: <New: YES, Old: NO, Prior: NO> Context: 0x0, Property: 0x166b21c0>
暂停：
-(void)playStream{
AVAsset *asset = [AVURLAsset URLAssetWithURL:[NSURL URLWithString:self.urlFileMp3] options:nil];
self.anItem = [AVPlayerItem playerItemWithAsset:asset];
if (!self.audioController) {
self.audioController = [[AVPlayer alloc] init];
}
[self.audioController replaceCurrentItemWithPlayerItem:self.anItem];
[self.audioController addObserver:self forKeyPath:@"currentItem.loadedTimeRanges" options:NSKeyValueObservingOptionNew context:nil];
[self.anItem addObserver:self forKeyPath:@"timedMetadata" options:NSKeyValueObservingOptionNew context:NULL];
}
并获取播放器和元数据的状态：
-(void)stopStream{
[self.audioController pause];
[self.audioController replaceCurrentItemWithPlayerItem:nil];
[self.anItem removeObserver:self forKeyPath:@"timedMetadata"];
}
PS：我不想使用@try @catch-这是非常糟糕的解决方案。