边界上的 UIViewController 已更改
UIViewController on bounds changed
我需要一种方法来检测何时更改了 UIViewController 的边界（例如，当 phone 旋转时）
对于 UIView 我是这样做的：
-(void)setBounds:(CGRect)newBounds
使用方法记录在 UIViewController class 参考的 "Handling View Rotations" 部分，
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.
我需要一种方法来检测何时更改了 UIViewController 的边界（例如，当 phone 旋转时）
对于 UIView 我是这样做的：
-(void)setBounds:(CGRect)newBounds
使用方法记录在 UIViewController class 参考的 "Handling View Rotations" 部分，
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.