ios的webview在xcode全局断点打开时，某些webview页面会抓到如下异常：“[WebActionDisablingCALayerDelegate willBeRemoved]: unrecognized selector sent to instance 0x604000204ff0”，不一定会crash，但出于强迫症还是fix一下这个问题。
错误原因：H5的页面中touch事件和鼠标事件冲突导致的。
解决方法：1.让H5的开发同事找出问题改之。
2.我们原生端通过runtime给webview写一个空方法，防止crash或者异常。
3.webvie换成wkwebview加载url
下面针对法2，给出代码：
@interface H5ViewController ()<UIWebViewDelegate>
id setBeingRemoved(id self, SEL selector, ...);
id willBeRemoved(id self, SEL selector, ...);
@end
@implementation H5ViewController
- (void)viewDidLoad {
[super viewDidLoad];
/** 此处初始化webview，具体代码省略 **/
//此处给webview增加容错方法
[self webViewAddMethods];
}
- (void)webViewAddMethods{
//预防报错:WebActionDisablingCALayerDelegate willBeRemoved
Class class = NSClassFromString(@"WebActionDisablingCALayerDelegate");
class_addMethod(class, NSSelectorFromString(@"setBeingRemoved"), setBeingRemoved, "v@:");
class_addMethod(class, NSSelectorFromString(@"willBeRemoved"), willBeRemoved, "v@:");
class_addMethod(class, NSSelectorFromString(@"removeFromSuperview"), willBeRemoved, "v@:");
}
id setBeingRemoved(id self, SEL selector, ...)
{
return nil;
}
id willBeRemoved(id self, SEL selector, ...)
{
return nil;
}
#pragma mark - UIWebViewDelegate
/** 此处写webview代理方法，具体代码省略*/
@end
