ios - 边界上的 UIViewController 已更改

Question

我需要一种方法来检测 UIViewController 的边界何时更改(例如，当手机旋转时)

对于 UIView 我这样做:

 -(void)setBounds:(CGRect)newBounds

Answer 1

使用的方法记录在 UIViewController 类引用的“处理 View 旋转”部分中，

In iOS 8, all rotation-related methods are deprecated. Instead, rotations are treated as a change in the size of the view controller’s view and are therefore reported using the viewWillTransitionToSize:withTransitionCoordinator: method. When the interface orientation changes, UIKit calls this method on the window’s root view controller. That view controller then notifies its child view controllers, propagating the message throughout the view controller hierarchy.