iOS9 弹出框总是指向锚点的左上角

Question

我正在使用将视图控制器呈现为弹出窗口的故事板转场。 seque 有一个自定义 UIView 作为它的锚点。在 iOS9 之前，弹出窗口将正确指向自定义 UIView 的中心底部（显示在 UIView 下方）。在 iOS9 上它指向 UIView.

的左上角

我确实尝试跟踪对自定义 UIView 的所有选择器调用，以查明是否有任何我可能需要在我的自定义 UIView 中实现以提供 'hotspot'弹出窗口但找不到任何内容

有什么想法..？谢谢

感谢@Igor Camilo 的回复 - 如果它对某些人有用，这就是我在代码中修复此问题的方法:

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {

     UIPopoverPresentationController* possiblePopOver = segue.destinationViewController.popoverPresentationController;
     if (possiblePopOver != nil) {
         //
         // iOS9 -- ensure correct sourceRect
         //
         possiblePopOver.sourceRect = possiblePopOver.sourceView.bounds;
     }
    ...
 }

示例： 'Short'按钮触发弹窗，弹窗指向'Sort'控件的左上角

Answer 1

我遇到了完全相同的问题。我只是通过在 prepareForSegue:

中设置 sourceRect 来解决它

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
    switch segue.identifier {
    case "Popover Identifier"?:
        if #available(iOS 9.0, *) {
            segue.destinationViewController?.popoverPresentationController?.sourceRect = anchorView.bounds
        }
    default:
        break
    }
}

Answer 2

这是 Objective-C 中 Igor Camilo 的片段示例。

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    // If the sender is a UIView, we might have to correct the sourceRect of
    // a potential popover being presented due to an iOS 9 bug. See:
    // https://openradar.appspot.com/22095792 and 
    if ([sender isKindOfClass:UIView.class]) {
        // Fetch the destination view controller
        UIViewController *destinationViewController = [segue destinationViewController];

        // If there is indeed a UIPopoverPresentationController involved
        if ([destinationViewController respondsToSelector:@selector(popoverPresentationController)]) {
            // Fetch the popover presentation controller
            UIPopoverPresentationController *popoverPresentationController =
            destinationViewController.popoverPresentationController;

            // Set the correct sourceRect given the sender's bounds
            popoverPresentationController.sourceRect = ((UIView *)sender).bounds;
        }
    }
}

Answer 3

有同样的问题，但我的应用程序有大量弹出窗口，所以我创建了一个集中函数来修复（但仍然必须在每个有弹出窗口的视图控制器上使用它）。

// Fix for IOS 9 pop-over arrow anchor bug
// ---------------------------------------
// - IOS9 points pop-over arrows on the top left corner of the anchor view
// - It seems that the popover controller's sourceRect is not being set
//   so, if it is empty  CGRect(0,0,0,0), we simply set it to the source view's bounds
//   which produces the same result as the IOS8 behaviour.
// - This method is to be called in the prepareForSegue method override of all
//   view controllers that use a PopOver segue
//
//   example use:
//
//          override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) 
//          {
//             fixIOS9PopOverAnchor(segue)   
//          }
//      
extension UIViewController
{
   func fixIOS9PopOverAnchor(segue:UIStoryboardSegue?)
   {
      guard #available(iOS 9.0, *) else { return }          
      if let popOver = segue?.destinationViewController.popoverPresentationController,
         let anchor  = popOver.sourceView
         where popOver.sourceRect == CGRect()      
            && segue!.sourceViewController === self 
      { popOver.sourceRect = anchor.bounds }   
   }       
}

Answer 4

这是我的解决方案，在 prepareForSegue:

segue.destinationViewController.popoverPresentationController?.sourceRect = CGRectMake(anchorView.frame.size.width/2, anchorView.frame.size.height, 0, 0)

这会将指针移动到锚视图的底部中间

Answer 5

如果您在主 UIViewController 中引用弹出窗口 UIViewController，您可以调整 sourceRect 属性以抵消弹出窗口。例如，给定 popover popoverVC 你可以这样做：

float xOffset = 10.0;
float yOffset = 5.0;
popoverVC.popoverPresentationController.sourceRect = CGMakeRect(xOffset, yOffset, 0.0, 0.0);

Answer 6

我也遇到了这个问题，但现在当我将它添加到我的 PrepareForSegue 函数时它可以正常工作了。鉴于我的 Segue ID 包含字符串 Popover

if ([[segue identifier] containsString:@"Popover"]) {
    [segue destinationViewController].popoverPresentationController.sourceRect = self.navigationItem.titleView.bounds;
}

Answer 7

尝试设置源矩形（UIView 或 UIBarButtonItem）的宽度和高度锚点并将其设置为活动状态。在初始化 UIView 或 UIBarButtonItem 时设置它。

UIBarButtonItem

 [[youruibarbuttonitem.customView.widthAnchor constraintEqualToConstant:youruibarbuttonitem.customView.bounds.size.width] setActive:YES];
 [[youruibarbuttonitem.customView.heightAnchor constraintEqualToConstant:youruibarbuttonitem.customView.bounds.size.height] setActive:YES];

UIView

[[uiview.widthAnchor constraintEqualToConstant:uiview.bounds.size.width] setActive:YES];
 [[uiview.heightAnchor constraintEqualToConstant:uiview.bounds.size.height] setActive:YES];

Answer 8

Swift 3 的一些更新的答案！原谅所有选角

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        if segue.identifier == "popSegue" {
            let popoverViewController = segue.destination
            popoverViewController.popoverPresentationController?.delegate = self
            segue.destination.popoverPresentationController?.sourceRect = ((sender as? UIButton)?.bounds)!
        }
    }

Answer 9

只是更新到一个实际的示例，其中包含适用于任何 UIView 的工作代码

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    switch segue.identifier {
    case "PopoverSegueId"?:
        if #available(iOS 9.0, *) {
            segue.destination.popoverPresentationController?.sourceRect = (segue.destination.popoverPresentationController?.sourceView?.bounds)!
        }
    default:
        break
    }

}

iOS9 弹出框总是指向锚点的左上角

iOS9 popover always points to top-left corner of anchor

uikit

uiview

ios