ios - 在纵向状态下强制旋转 UIViewController

Question

在这种环境下(在Project配置中修复支持方向为Portrait)

你能在 Landscape 中显示特定的 UIViewController 吗？

Answer 1

简短的回答是你不能，因为根据 Apple 文档 here

The system intersects the view controller's supported orientations with the app's supported orientations (as determined by the Info.plist file or the app delegate's application(_:supportedInterfaceOrientationsFor:) method) and the device's supported orientations to determine whether to rotate.

要实现您需要的功能，您还应该将允许的方向设置为横向，然后在您的 View Controller 中实现以下内容以允许纵向或横向(或两者):

override var supportedInterfaceOrientations: UIInterfaceOrientationMask {
    return UIInterfaceOrientationMask.portrait//or UIInterfaceOrientationMask.landscape
  }

然后要强制指定方向，您可以将方向设置为 UIDevice:

UIDevice.current.setValue(UIInterfaceOrientation.landscapeLeft.rawValue, forKey: "orientation")