UIPopoverController 可以在屏幕上移动吗？

发布于 2024-11-06 01:50:23 字数 146 浏览 0 评论 0原文

一旦 UIPopovercontroller 已经呈现，是否可以在屏幕上移动它？
我的应用程序中有一个可以轻微移动的小视图，我希望 UIPopoverController 能够随其移动，而不必在每次移动时重新呈现 UIPopoverController。这可能吗？

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笑，眼淚并存 2024-11-13 01:50:23

从 iOS 9 开始，“UIPopoverController 已被弃用。Popover 现在被实现为 UIViewController 演示文稿。使用 UIModalPresentationPopover 和 UIPopoverPresentationController 的模式演示样式。”

使用以下内容呈现弹出窗口。您也许可以更改 sourceRect 和 sourceView 的值，但这不是 API 预期的行为。

    DetailViewController *detailVC = self.detailViewController;
    detailVC.preferredContentSize = CGSizeMake(420, 92);
    detailVC.modalPresentationStyle = UIModalPresentationPopover;


    UIPopoverPresentationController *presController = detailVC.popoverPresentationController;
    if (presController) {
        presController.delegate = detailVC;
        presController.barButtonItem = self.detailButton;
        presController.sourceRect = self.view.frame;
        presController.sourceView = self.view;
        presController.permittedArrowDirections = UIPopoverArrowDirectionAny;
    }

    [self presentViewController: detailVC animated:YES completion:^{

    }];

相反，我建议保留对随弹出窗口呈现的视图控制器的引用，关闭弹出窗口并重新呈现。

DetailViewController *detailVC = self.detailViewController;
[self dismissViewControllerAnimated:NO completion:^{

    UIPopoverPresentationController *presController = detailVC.popoverPresentationController;
    if (presController) {
        presController.delegate = detailVC;
        presController.barButtonItem = self.detailButton;
        presController.sourceRect = self.view.frame; //Update frame
        presController.sourceView = self.view;
        presController.permittedArrowDirections = UIPopoverArrowDirectionAny;
    }

    [self presentViewController: detailVC animated:NO completion:^{

    }];
}];

As of iOS 9, "UIPopoverController is deprecated. Popovers are now implemented as UIViewController presentations. Use a modal presentation style of UIModalPresentationPopover and UIPopoverPresentationController."

Use the following to present a popover. You may be able to change the values of sourceRect and sourceView but this isn't intended API behavior.

    DetailViewController *detailVC = self.detailViewController;
    detailVC.preferredContentSize = CGSizeMake(420, 92);
    detailVC.modalPresentationStyle = UIModalPresentationPopover;


    UIPopoverPresentationController *presController = detailVC.popoverPresentationController;
    if (presController) {
        presController.delegate = detailVC;
        presController.barButtonItem = self.detailButton;
        presController.sourceRect = self.view.frame;
        presController.sourceView = self.view;
        presController.permittedArrowDirections = UIPopoverArrowDirectionAny;
    }

    [self presentViewController: detailVC animated:YES completion:^{

    }];

Instead, I suggest keeping a reference to the view controller presented with the popover, dismiss the popover and re-present.

DetailViewController *detailVC = self.detailViewController;
[self dismissViewControllerAnimated:NO completion:^{

    UIPopoverPresentationController *presController = detailVC.popoverPresentationController;
    if (presController) {
        presController.delegate = detailVC;
        presController.barButtonItem = self.detailButton;
        presController.sourceRect = self.view.frame; //Update frame
        presController.sourceView = self.view;
        presController.permittedArrowDirections = UIPopoverArrowDirectionAny;
    }

    [self presentViewController: detailVC animated:NO completion:^{

    }];
}];

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