首页 > 代码库 > Warning: Attempt to present <UIAlertController: 0x7fb6ab704950> on <UIViewController: 0x7fb6ab51c810> whose view is not in the window hierarchy!

Warning: Attempt to present <UIAlertController: 0x7fb6ab704950> on <UIViewController: 0x7fb6ab51c810> whose view is not in the window hierarchy!

对于在UIView上,是不能跳转的,所以我们通常要借助UIViewController,但经常会出现UIViewController没被加载的情况。这时就会报这个错。

解决方法:

 viewCon = (UIApplication.shared.keyWindow?.rootViewController)!
  self.viewCon.present(alertView, animated: true, completion: nil);

希望后面的童鞋不要掉坑里了哦!!!!

Warning: Attempt to present <UIAlertController: 0x7fb6ab704950> on <UIViewController: 0x7fb6ab51c810> whose view is not in the window hierarchy!