IOS10上崩溃错误“View has lost track of its superview, most likely through unsupported use of CALayer”解决方案

来源：互联网发布：阿里云域名过户步骤编辑：程序博客网时间：2024/06/15 18:51

为了适配iOS 10 升级了Xcode 8，项目中点击cell中的一个按钮就崩溃了。

崩溃日志：

Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'View has lost track of its superview, most likely through unsupported use of CALayer API on the view's layer. If this isn't a crash yet, it will be in the near future.

Problem view: <UIToolbar: 0x1018555d0; frame = (0 0; 0 0); layer = <CALayer: 0x17023f520>>
Expected parent: <AMBlurView: 0x1018697c0; frame = (0 0; 320 160); clipsToBounds = YES; alpha = 0.8; autoresize = W+H; layer = <CALayer: 0x17023f1e0>>

Break on UIViewReportBrokenSuperviewChain to debug.'

在谷歌上找到了问题的原因，如下所示：

这是insertsublayer问题。这是一种把戏获得透明度的背景。显然这是一个已知的把戏，但这使得应用程序崩溃在新的一个。

在项目中找到了问题代码，是因为我写的视频播放器要在播放时在底层添加一个模糊背景图片，我是像下面这样写的

//当播放的时候在底层设置图片(填充播放剩余的部分)
self.beiJingImageView = [[UIImageView alloc]initWithFrame:self.layer.bounds];
[self.layer insertSublayer:_beiJingImageView.layer below:_playerLayer];

//给背景图片添加模糊效果
UIBlurEffect *effect = [UIBlurEffect effectWithStyle:UIBlurEffectStyleDark];
self.effectView = [[UIVisualEffectView alloc] initWithEffect:effect];
self.effectView.frame = self.beiJingImageView.bounds;
//设置模糊透明度
self.effectView.alpha = .8f;
[self.beiJingImageView addSubview:self.effectView];

引起崩溃的代码就是下面代码

self.beiJingImageView = [[UIImageView alloc]initWithFrame:self.layer.bounds];

[self.layer insertSublayer:_beiJingImageView.layer below:_playerLayer];

所以换了新的实现方式

//先设置模糊层

UIView *mohuView = [[UIViewalloc]initWithFrame:self.layer.bounds];

mohuView.backgroundColor = [UIColorblackColor];

mohuView.alpha =0.8;

[selfaddSubview:mohuView];

[selfsendSubviewToBack:mohuView];

// //当播放的时候在底层设置图片(填充播放剩余的部分)

self.beiJingImageView = [[UIImageViewalloc]initWithFrame:self.layer.bounds];