iOS 8.4 AVFoundation _attachToPlayer 或 _attachToFigPlayer 崩溃 |一个 AVPlayerItem 不能与多个 AVPlayer 实例相关联

Question

我刚刚收到来自 crashlytics 的消息，说我的应用程序稳定性一塌糊涂！基本上这是 iOS (8.4) 的最后一次更新时爆发的崩溃，在以前的版本中是不存在的。

您是否知道什么是 _attachToFigPlayer 或者可能发生了什么导致了这种情况？它发生在两个应用程序中，一个在 Obj-c 中，另一个在 Swift.

中

谢谢大家！

原始崩溃：(_attachToFigPlayer)

Thread : Fatal Exception: NSInvalidArgumentException
0  CoreFoundation                 0x22adafef __exceptionPreprocess
1  libobjc.A.dylib                0x3141ec8b objc_exception_throw
2  AVFoundation                   0x21575b37 -[AVPlayerItem _attachToPlayer:]
3  AVFoundation                   0x2156a131 -[AVPlayer _attachItem:andPerformOperation:withObject:]
4  AVFoundation                   0x21569347 -[AVPlayer _insertItem:afterItem:]
5  AVFoundation                   0x2158744d -[AVQueuePlayer insertItem:afterItem:]
6  MediaPlayer                    0x24468c7f -[MPQueuePlayer insertItem:afterItem:]
7  MediaPlayer                    0x243e878b -[MPAVQueueCoordinator _syncPlayerItems]
8  MediaPlayer                    0x243e8297 -[MPAVQueueCoordinator _syncItems]
9  MediaPlayer                    0x243e97e5 __60-[MPAVQueueCoordinator _updateQueueDepthWithPausedDuration:]_block_invoke
10 libdispatch.dylib              0x319af2e3 _dispatch_call_block_and_release
11 libdispatch.dylib              0x319af2cf _dispatch_client_callout
12 libdispatch.dylib              0x319b2d2f _dispatch_main_queue_callback_4CF
13 CoreFoundation                 0x22aa0609 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__
14 CoreFoundation                 0x22a9ed09 __CFRunLoopRun
15 CoreFoundation                 0x229eb201 CFRunLoopRunSpecific
16 CoreFoundation                 0x229eb013 CFRunLoopRunInMode
17 GraphicsServices               0x2a4bc201 GSEventRunModal
18 UIKit                          0x261b7a09 UIApplicationMain
19 MYAPP                          0x000d98b3 main (main.m:32)
20 libdyld.dylib                  0x319d0aaf start

原始崩溃：(_attachToFigPlayer)

  Thread : Fatal Exception: NSInvalidArgumentException
    0  CoreFoundation                 0x0000000182e602d8 __exceptionPreprocess
    1  libobjc.A.dylib                0x0000000194ad40e4 objc_exception_throw
    2  AVFoundation                   0x0000000181634b50 -[AVPlayerItem _attachToFigPlayer]
    3  AVFoundation                   0x0000000181627770 -[AVPlayer _attachItem:andPerformOperation:withObject:]
    4  AVFoundation                   0x0000000181648f00 -[AVQueuePlayer insertItem:afterItem:]
    5  MediaPlayer                    0x0000000185251d30 -[MPQueuePlayer insertItem:afterItem:]
    6  MediaPlayer                    0x00000001851bde7c -[MPAVQueueCoordinator _syncPlayerItems]
    7  MediaPlayer                    0x00000001851bd8a4 -[MPAVQueueCoordinator _syncItems]
    8  MediaPlayer                    0x00000001851bf2fc __60-[MPAVQueueCoordinator _updateQueueDepthWithPausedDuration:]_block_invoke
    9  libdispatch.dylib              0x0000000195151994 _dispatch_call_block_and_release
    10 libdispatch.dylib              0x0000000195151954 _dispatch_client_callout
    11 libdispatch.dylib              0x000000019515620c _dispatch_main_queue_callback_4CF
    12 CoreFoundation                 0x0000000182e177f8 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__
    13 CoreFoundation                 0x0000000182e158a0 __CFRunLoopRun
    14 CoreFoundation                 0x0000000182d412d4 CFRunLoopRunSpecific
    15 GraphicsServices               0x000000018c79f6fc GSEventRunModal
    16 UIKit                          0x000000018793ef40 UIApplicationMain
    17 MYAPP                          0x00000001001c2e44 main (AppDelegate.swift:17)
    18 libdyld.dylib                  0x000000019517ea08 start

更新：

这是我在 XCode

中遇到的错误

*** 由于未捕获的异常 'NSInvalidArgumentException' 而终止应用程序，原因：'An AVPlayerItem cannot be associated with more than one instance of AVPlayer'

Answer 1

好的，这似乎是在使用 MPMoviePlayerViewController 并尝试重新利用播放器时发生的。在我的例子中，我将播放器用作子视图。

基本上我的解决方法是将播放器设置为 NULL 并在每次播放新视频时重新启动它。

代码：（请记住，我使用 MPMoviePlayerViewController 作为子视图）

- (void)initPlayer {

    if (self.player != NULL) {
        [self.player.view removeFromSuperview];
        self.player = NULL;
    }
    self.player = [[MPMoviePlayerViewController alloc] initWithContentURL:[NSURL URLWithString:movie]];

    if (IsIPad()) {
        width = 730;
        height = 412;
    } else {
        width = 320;
        height = 180;
    }

    self.player.view.frame = CGRectMake(0, 61, width, height);
    self.player.view.hidden = true;
    self.player.moviePlayer.fullscreen = false;
    self.player.moviePlayer.controlStyle = MPMovieControlStyleEmbedded;

    [self.viewController.view addSubview:self.player.view];
}

Answer 2

if(avPlayer==nil)
{

    avPlayer = [AVPlayer playerWithPlayerItem:_avPlayerItem];
}else{
    [avPlayer replaceCurrentItemWithPlayerItem:_avPlayerItem];

}

这将解决此类问题

iOS 8.4 AVFoundation _attachToPlayer 或 _attachToFigPlayer 崩溃 |一个 AVPlayerItem 不能与多个 AVPlayer 实例相关联

iOS 8.4 AVFoundation _attachToPlayer or _attachToFigPlayer crash | An AVPlayerItem cannot be associated with more than one instance of AVPlayer

avfoundation

ios

ios8.4