iOS turn off the horizontal screen after a single page to toggle the screen

In the viewcontroller you want to support the screen, rewrite two methods:

// 支持设备自动旋转 - ( BOOL )shouldAutorotate {      return YES; } // 支持横竖屏显示 - (NSUInteger)supportedInterfaceOrientations {      return UIInterfaceOrientationMaskAll; }

In this viewcontroller, you can switch between the screen.

However, if your window's Rootviewcontroller is a navigationcontroller, the following issues may occur:

Navigationcontroller only support vertical screen, but you push to a new controller, this controller supports the horizontal screen, When you switch to a horizontal screen in a new controller (it is also possible to switch to a horizontal screen and then pop back), the program will blink because your navigationcontroller does not support horizontal screen.

This requires writing a uinavigationcontroller subclass, overriding the method in this class:

- ( BOOL )shouldAutorotate {      return [self.viewControllers.lastObject shouldAutorotate]; } - (NSUInteger)supportedInterfaceOrientations {      return [self.viewControllers.lastObject supportedInterfaceOrientations]; } - (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation {      return [self.viewControllers.lastObject preferredInterfaceOrientationForPresentation]; }Then use this class to create an instance as the window's Rootviewcontroller, so you can avoid this problem.

iOS turn off the horizontal screen after a single page to toggle the screen