如何在 Swift 中以编程方式向项目添加设备方向？

Question

Is there a way to add or remove these components programatically?

Answer 1

No, not exactly. You need to set up all the possible user interface orientations your app's view controllers MIGHT support in info.plist. Once you've done that there are view controller methods the system calls to see what orientations an individual view controller supports. (See supportedInterfaceOrientations in the docs.)

As of iOS 8 we're not supposed to use rotation methods any more, so check the docs carefully. It looks to me like supportedInterfaceOrientations is still supported, but the willRotate... , willAnimateRotation... , didRotateFromInterfaceOrientation , etc, are deprecated.

I suggest reading about user interface rotation in the UIViewController class reference (in Xcode or in Apple's online documentation on the web.)