objective-c - 有关viewDiddisappear 和viewDidAppear

Question

点击下一步就直接卡死，此界面的viewWillDisappear执行了，下一界面的viewWillappear与viewdidload都执行了但是界面就卡在执行不了任何操作。
求指教

Answer 1

Usually there is a problem when jumping, please post the code

Answer 2

viewDidLoad viewWillDisappear... Do these call super? If you have adjusted it, please post the code, it’s for two controllers