iOS13适配汇总(推荐)-创新互联

随着iPhone 11的发布，iOS 13适配也提上了日程，接下来就开发中升级iOS13的手机可能出现的问题

Xcode: 11.0
iOS : 13.0

UIViewController 模态弹出界面

viewController.present(presentVC, animated: true, completion: nil)

在调用模态弹出视图，会发现弹出的界面没有全屏。如图

通过多次的尝试，发现在低版本里面不会发生这种情况（iOS12及以下），于是我查阅了最新的开发文档，发现了端倪，主要还是因为我们之前忽略了UIViewController里面的一个属性，即:modalPresentationStyle

Defines the presentation style that will be used for this view controller when it is presented modally. Set this property on the view controller to be presented, not the presenter.
 If this property has been set to UIModalPresentationAutomatic, reading it will always return a concrete presentation style. By default UIViewController resolves UIModalPresentationAutomatic to UIModalPresentationPageSheet, but other system-provided view controllers may resolve UIModalPresentationAutomatic to other concrete presentation styles.
 Defaults to UIModalPresentationAutomatic on iOS starting in iOS 13.0, and UIModalPresentationFullScreen on previous versions. Defaults to UIModalPresentationFullScreen on all other platforms.


public enum UIModalPresentationStyle : Int {
  case fullScreen
  
  @available(iOS 3.2, *)
  case pageSheet
  @available(iOS 3.2, *)
  case formSheet

  @available(iOS 3.2, *)
  case currentContext

  @available(iOS 7.0, *)
  case custom

  @available(iOS 8.0, *)
  case overFullScreen

  @available(iOS 8.0, *)
  case overCurrentContext

  @available(iOS 8.0, *)
  case popover

  
  @available(iOS 7.0, *)
  case none

  @available(iOS 13.0, *)
  case automatic
}

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