UIModalPresentationPopover for iPhone 6 Plus在横向上不显示弹出窗口

Question

我想总是ViewController在所有设备和所有方向上提供一个popover.我试图通过采用UIPopoverPresentationControllerDelegate和设置sourceView和来完成这个sourceRect.

这适用于所有设备和方向,除了横向的iPhone 6 Plus.在这种情况下,视图控制器在表单中从屏幕底部向上滑动.如何防止它始终出现在弹出框中？

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
let popoverPresentationController = segue.destinationViewController.popoverPresentationController
popoverPresentationController?.delegate = self
popoverPresentationController?.sourceView = self.titleLabel!.superview
popoverPresentationController?.sourceRect = self.titleLabel!.frame }

func adaptivePresentationStyleForPresentationController(controller: UIPresentationController) -> UIModalPresentationStyle {
return UIModalPresentationStyle.None }

所有设备均在iOS 8.2或更高版本下

Answer 1

实施新adaptivePresentationStyleForPresentationController:traitCollection:方法UIAdaptivePresentationControllerDelegate:

- (UIModalPresentationStyle)adaptivePresentationStyleForPresentationController:(UIPresentationController *)controller traitCollection:(UITraitCollection *)traitCollection {
    // This method is called in iOS 8.3 or later regardless of trait collection, in which case use the original presentation style (UIModalPresentationNone signals no adaptation)
    return UIModalPresentationNone;
}

UIModalPresentationNone 告诉演示控制器使用原始演示样式,在您的情况下将显示弹出窗口.

Answer 2

在Swift 3中，如果您实现了原始adaptivePresentationStyle方法，只需添加以下代码即可：

func adaptivePresentationStyle(for controller: UIPresentationController, traitCollection: UITraitCollection) -> UIModalPresentationStyle {
    return adaptivePresentationStyle(for: controller)
}