ios - 崩溃-[AVPlayerItem _attachToPlayer :] An AVPlayerItem cannot be associated with more than one instance of AVPlayer

Question

我有一个崩溃影响了我大约 10% 的用户，但我无法重现它，并且不知道发生这种情况的确切时间。

Crashlytics 报告说，大约一半的崩溃用户没有关注应用程序，即做背景音频或 AirPlay。该应用程序播放 HLS 视频流，并在后台切换到纯音频版本。

有什么问题吗，或者为什么我的单例 Player 类中会有多个 AVPlayer 实例？

谢谢!

Exception Type:
NSInvalidArgumentException
Reason:
An AVPlayerItem cannot be associated with more than one instance of AVPlayer
Fatal Exception
Latest Crash: 4/06/2013 at 8:48:46 UTC+0200
0   CoreFoundation  __exceptionPreprocess + 162
1   libobjc.A.dylib objc_exception_throw + 30
2   AVFoundation    -[AVPlayerItem _attachToPlayer:] + 188
3   AVFoundation    -[AVPlayer _attachItem:andPerformOperation:withObject:] + 336
4   AVFoundation    -[AVPlayer _insertItem:afterItem:] + 26
5   AVFoundation    -[AVQueuePlayer insertItem:afterItem:] + 136
6   MediaPlayer __block_global_4 + 520
7
...
libdispatch.dylib   _dispatch_call_block_and_release + 10
14

Answer 1

这似乎可以通过在设置新 URL 之前明确停止播放来解决，例如

[moviePlayer stop];
moviePlayer.movieSourceType = MPMovieSourceTypeStreaming;
[moviePlayer setContentURL:[NSURL URLWithString:[videos objectForKey:quality]]];