iOS >>设备方向>>屏幕不支持颠倒

Question

I have a screen that supports Device Orientation.

Everything is working fine except for the fact that when I rotate the device upside down (home button at top), the rotation doesn't work (it's stuck on the last landscape settings).

I know of several places needed be updated to support this:

• In the VC itself, I added the methods:

• In the Project Target, I updated as follow:

• In the Storyboard VC Scene, I updated as follow:

What am I missing here?

Answer 1

You also have to allow rotating to all orientations in every parent view controller of the current main view controller. For example, if your view controller is in navigation controller, try subclassing it and override the same methods as in your example.

Edit: As @JordanC mentioned, since iOS 7 you can implement UINavigationControllerDelegate method to return custom supported orientations:

- (UIInterfaceOrientationMask)navigationControllerSupportedInterfaceOrientations:(UINavigationController *)navigationController

Answer 2

正如@eGanges所提到的，关键点可能是你的UITabBarController子类化（并覆盖supportedInterfaceOrientations ），如果这是你的初始视图控制器，那么这是你应该子类化的唯一控制器（当然你应该添加所有支持的接口方向到你的应用Info.plist文件UISupportedInterfaceOrientations键）

Answer 3

Have you tested on real device?

anyway try this:

- (NSUInteger)supportedInterfaceOrientations {
    return (UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskPortraitUpsideDown);
}