iOS 9 将旋转至界面方向已弃用

Question

正如标题所说。在iOS 9中，category中的所有方法(在UIViewController.h中):

@interface UIViewController (UIViewControllerRotation)

已被弃用。

所以问题是:How to detect UIViewController rotation events in iOS 9

Answer 1

iOS 8 检测方向变化(旋转)的方法正在实现 View Controller 的以下方法:

- (void)viewWillTransitionToSize:(CGSize)size withTransitionCoordinator:(id<UIViewControllerTransitionCoordinator>)coordinator

{
    // Do view manipulation here.
    [super viewWillTransitionToSize:size withTransitionCoordinator:coordinator];
}

Note: The controller's view has not yet transitioned to that size at this time, so be careful if your sizing code relies on the view's current dimensions.

它还将应用iOS 9

来源:https://stackoverflow.com/a/27700245/2963912