iOS 10 observer未移除引发的异常崩溃

[beatman423]

必现/偶发?
偶发

描述bug
iOS 10系统中 由于player或playerItem释放时未移除observer引发的Fatal Exception: NSInternalInconsistencyException
(Pod已经升级到最新版本)

你期望的结果是什么?
在iOS 10环境下 在player或playerItem释放时正确移除observer

运行环境

• iPhone 5
• iOS 10.3.4
• Xcode 12.5
• Objective-C

截图
如果有必要的话，请上传几张截图

[beatman423]

@changsanjiang 麻烦看一下吧 多谢了

[SUWW]

playerItem

请问有解决了吗

[changsanjiang]

@SUWW #153

[SUWW]

@SUWW #153

十分感谢你的回复，我有看到的，但是里面说的方法，只有那个替换文件的，我没有尝试，因为我文件中并没有那个文件的。我的SJBaseVideoPlayer版本应该是最新的。SJBaseVideoPlayer (3.6.7)， SJMediaCacheServer (1.7.7)，SJUIKit (0.0.0.58):。我在demo中又无法复现

[changsanjiang]

报错是一样的吗, 最好能提供一些日志

[SUWW]

@changsanjiang 报错日子如下
崩溃的原因是=-[SJVideoModel videoUrl]: unrecognized selector sent to instance 0x28126eb80,,,崩溃的名称是=NSInvalidArgumentException,,,崩溃的堆栈信息是=(
0 CoreFoundation 0x0000000194063270 37A3D601-9398-3DC2-9D00-1B162726A4C9 + 1159792
1 libobjc.A.dylib 0x00000001a7df8480 objc_exception_throw + 56
2 CoreFoundation 0x0000000193f72278 37A3D601-9398-3DC2-9D00-1B162726A4C9 + 172664
3 CoreFoundation 0x00000001940658b8 37A3D601-9398-3DC2-9D00-1B162726A4C9 + 1169592
4 CoreFoundation 0x000000019406785c _CF_forwarding_prep_0 + 92
5 BigStar 0x00000001055620f8 BigStar + 6955256
6 UIKitCore 0x0000000196b1ccd8 E136F680-E4B6-3BCE-8132-4A39EC1ED9FA + 13913304
7 UIKitCore 0x0000000196aea608 E136F680-E4B6-3BCE-8132-4A39EC1ED9FA + 13706760
8 UIKitCore 0x0000000196afd750 E136F680-E4B6-3BCE-8132-4A39EC1ED9FA + 13784912
9 BigStar 0x0000000105562790 BigStar + 6956944
10 BigStar 0x00000001055634fc BigStar + 6960380
11 BigStar 0x00000001060e12ec BigStar + 19010284
12 BigStar 0x0000000105563124 BigStar + 6959396
13 libdispatch.dylib 0x0000000193c9b298 ECEF88A0-245A-33C1-823D-3160E1F3D674 + 397976
14 libdispatch.dylib 0x0000000193c40028 ECEF88A0-245A-33C1-823D-3160E1F3D674 + 24616
15 libdispatch.dylib 0x0000000193c50d64 ECEF88A0-245A-33C1-823D-3160E1F3D674 + 93540
16 libdispatch.dylib 0x0000000193c49bc4 ECEF88A0-245A-33C1-823D-3160E1F3D674 + 64452
17 CoreFoundation 0x0000000193fe2298 37A3D601-9398-3DC2-9D00-1B162726A4C9 + 631448
18 CoreFoundation 0x0000000193fdc6f8 37A3D601-9398-3DC2-9D00-1B162726A4C9 + 607992
19 CoreFoundation 0x0000000193fdb7d0 CFRunLoopRunSpecific + 572
20 GraphicsServices 0x00000001aa71d570 GSEventRunModal + 160
21 UIKitCore 0x00000001969082d0 E136F680-E4B6-3BCE-8132-4A39EC1ED9FA + 11731664
22 UIKitCore 0x000000019690d84c UIApplicationMain + 164
23 BigStar 0x0000000105e7705c BigStar + 16478300
24 libdyld.dylib 0x0000000193cba140 FFBE9840-BC5A-338D-8AE0-C6FFE5E834CC + 4416
)

或者你看下开发者2群，我有在群里提问的，这里我无法上传图片

[SUWW]

@changsanjiang 上面的日志是后台提供的。我xcode控制台打印的如下

[时间]: 2022-04-12 10:00:20
[设备]: iPhone11,6
[系统版本] : 15.3.1
[应用版本]: 1.0.1
[NSObject]:<NSKeyValueObservance 0x281 cOccf0: Observer:
0x281185530, Key path: playModel, Options: <New: YES, Old: YES,
Prior: NO>.上下文: 0x0, Property: 0x281cc7b70>
[崩溃类型]: NSRangeException
[崩溃原因]:无法从<NSKeyValueObservance 0x281c0ccf0>中删
除键路径"playModel"的观察者<SJVideoPlayerURL AssetObserver
0x281180d10>，因为它没有注册为观察者。
[错误地点]: -[_ _SJKVOAutoremove dealloc]

我只要屏蔽了

• (void)configureWithURL:(NSURL *)URL {
  [self stop];
  SJVideoPlayerURLAsset *asset = [SJVideoPlayerURLAsset.alloc initWithURL:URL];

// self.URLAsset = asset;
}方法中的self.URLAsset = asset 应该是这个方法里出了问题，

[SUWW]

@changsanjiang
[Time]:2022-04-12 12:59:34
[Bundle Id]:
[Device]:iPhone11,6
[System Version]:15.3.1
[AppVersion]:1.0.1
[NSObject]:<__SJKVOAutoremove: 0x2839a97a0>
[Crash Type]: NSRangeException
[Crash Reason]: Cannot remove an observer <SJVideoPlayerURLAssetObserver 0x28343ae00> for the key path "playModel" from <__SJKVOAutoremove 0x2839a97a0> because it is not registered as an observer.
[Error Place]: -[__SJKVOAutoremove dealloc]
[Crash Type]: (
0 CoreFoundation 0x0000000180dc9110 E2F84645-2905-31EF-8EC7-3CC19C3CDDB3 + 626960
1 libobjc.A.dylib 0x0000000199619d64 objc_exception_throw + 60
2 Foundation 0x000000018258ae54 925A43CD-EAF2-3161-9378-3ED87468301D + 220756
3 Foundation 0x00000001825af184 925A43CD-EAF2-3161-9378-3ED87468301D + 369028
4 GJNoCrash 0x0000000105f768a4 -[NSObject(KVOCrash) gj_removeObserver:forKeyPath:] + 100
5 SJUIKit 0x0000000106aa4254 -[__SJKVOAutoremove dealloc] + 84
6 libobjc.A.dylib 0x000000019960633c 56A134B6-C3D8-3D91-B1FC-7BDB75C5903B + 9020
7 libobjc.A.dylib 0x0000000199608b84 objc_destructInstance + 96
8 libobjc.A.dylib 0x00000001996121c8 _objc_rootDealloc + 80
9 GJNoCrash 0x0000000105f77048 -[NSObject(NSNotificationCrash) gj_dealloc] + 136
10 SJBaseVideoPlayer 0x000000010685da74 -[SJBaseVideoPlayer(PlayControl) _updateAssetObservers] + 208
11 SJBaseVideoPlayer 0x000000010685d6dc -[SJBaseVideoPlayer(PlayControl) setURLAsset:] + 268
12 BigStar 0x00000001030e0edc BigStar + 12193500
13 BigStar 0x0000000102be0c9c BigStar + 6950044
14 UIKitCore 0x00000001834610b4 920A0EE6-D266-3058-8144-27A27B23AD62 + 2654388
15 UIKitCore 0x00000001836609e0 920A0EE6-D266-3058-8144-27A27B23AD62 + 4749792
16 UIKitCore 0x0000000183486c40 920A0EE6-D266-3058-8144-27A27B23AD62 + 2808896
17 UIKitCore 0x0000000183355df4 920A0EE6-D266-3058-8144-27A27B23AD62 + 1560052
18 UIKitCore 0x0000000183366474 920A0EE6-D266-3058-8144-27A27B23AD62 + 1627252
19 QuartzCore 0x0000000184ac9794 A2DA3A56-96BC-362F-BD55-949AB26AD274 + 259988
20 QuartzCore 0x0000000184abbfb4 A2DA3A56-96BC-362F-BD55-949AB26AD274 + 204724
21 QuartzCore 0x0000000184ad05dc A2DA3A56-96BC-362F-BD55-949AB26AD274 + 288220
22 QuartzCore 0x0000000184ad8ed0 A2DA3A56-96BC-362F-BD55-949AB26AD274 + 323280
23 QuartzCore 0x0000000184abb70c A2DA3A56-96BC-362F-BD55-949AB26AD274 + 202508
24 CoreFoundation 0x0000000180d71610 E2F84645-2905-31EF-8EC7-3CC19C3CDDB3 + 267792
25 CoreFoundation 0x0000000180d408f4 E2F84645-2905-31EF-8EC7-3CC19C3CDDB3 + 67828
26 CoreFoundation 0x0000000180d3b98c E2F84645-2905-31EF-8EC7-3CC19C3CDDB3 + 47500
27 CoreFoundation 0x0000000180d4f468 CFRunLoopRunSpecific + 600
28 GraphicsServices 0x000000019c8f338c GSEventRunModal + 164
29 UIKitCore 0x00000001836f25d0 920A0EE6-D266-3058-8144-27A27B23AD62 + 5346768
30 UIKitCore 0x0000000183470f74 UIApplicationMain + 364
31 BigStar 0x00000001034f6f6c BigStar + 16478060
32 dyld 0x0000000105d45aa4 start + 520
)
SJMediaPlaybackController<0x280428240>.assetStatus.Preparing

xcode断点锁定在以下代码中崩溃

• (void)dealloc {
  if ( _factor ) {
  [_target removeObserver:_observer forKeyPath:_keyPath];
  _factor = nil;
  }

}

[changsanjiang]

嗯

[SUWW]

问题已解决。我出现这个问题的原因是，因为项目中存在其它的kvo 自动移除的库导致的。希望出现这个问题的大家，可以查看下自己的项目中是否有其它的kvo 自动移除的库