objective-c - UIPopoverPresentationController 给我黑屏

Question

我正在开发一个应用程序，我需要在其中显示带有图像的弹出框，我使用了 UIPopoverController，现在在 iOS8 上已弃用此类，Apple 建议改用 UIPopoverPresentationController，但是当我尝试显示弹出框时出现黑屏。你能帮助我吗？谢谢。

这是我尝试打开名为“popVC”的视图控制器作为弹出窗口的代码。*vernazaImagenDetalle 是 UIViewController 子类

vernazaImagenDetalle *vc =

[self.storyboard instantiateViewControllerWithIdentifier:@"popVC"];

vc.modalPresentationStyle = UIModalPresentationPopover;

[self presentViewController:vc animated: YES completion: nil];



UIButton *boton=(UIButton*)sender;

NSLog(@"tag %ld",(long)boton.tag);



UIPopoverPresentationController *presentationController =

[vc popoverPresentationController];

presentationController.permittedArrowDirections =0;

presentationController.sourceView =boton;

presentationController.sourceRect = CGRectMake(self.stringContenido.frame.size.width/2,(250+self.stringContenido.contentOffset.y),1,1);

Answer 1

对我来说，将以下内容添加到 presentationControllerDelegate 工作 -

  func adaptivePresentationStyleForPresentationController(controller: UIPresentationController) -> UIModalPresentationStyle {
    return .None;
  }
  func adaptivePresentationStyleForPresentationController(controller: UIPresentationController, traitCollection: UITraitCollection) -> UIModalPresentationStyle {
    return .None;
  }