iOS9 popover始终指向锚点的左上角 [英] iOS9 popover always points to top-left corner of anchor

问题描述

我正在使用一个故事板segue，它将视图控制器显示为popover。 seque有一个自定义 UIView 作为其锚点。在iOS9之前，popover将正确指向自定义 UIView 的中心底部（在UIView下面显示）。在iOS9上，它指向 UIView 的左上角。

I'm using a storyboard segue that presents a view controller as popover. The seque has a custom UIView as its anchor. On pre-iOS9 the popover would correctly point to the centre-bottom of the custom UIView (presented below the UIView). On iOS9 it points to the top-left corner of the UIView.

我确实尝试跟踪所有选择器调用到自定义 UIView ，找出我可能需要在我的自定义 UIView 中实现的任何内容，以提供'热点'为popover但找不到任何东西

I did try to trace all selector calls to the custom UIView to find out if there is anything I may need to implement in my custom UIView to provide the 'hotspot' for the popover but couldn't find anything

任何想法..？谢谢

感谢@Igor Camilo的回复 - 如果它对某些人有用，这就是我在我的代码中解决这个问题的方法：

- (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：'短'按钮触发弹出窗口，弹出窗口指向'排序'控件的左上角

Example: 'Short' button triggers a popover, the popover points to the top-left corner of 'Sort' control

推荐答案

我遇到了完全相同的问题。我刚刚通过在prepareForSegue中设置sourceRect来解决它：

I had the exact same problem. I just resolved it by setting sourceRect in prepareForSegue:

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
    }
}

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