ios - 从 iPhone 中的 UIBarButtonItem 呈现弹出框

Question

我想在 UIBarButtonItem 中将 View Controller 显示为 iPhone 中的弹出窗口

我在按钮的操作上编写了以下代码。

-(IBAction)showAvailableCategory:(UIButton *)sender
{
    CategoryPopup *categoryPopupViewController = [[CategoryPopup alloc]init];
    UIPopoverPresentationController *popOverCat  = categoryPopupViewController.popoverPresentationController;
    categoryPopupViewController.preferredContentSize = CGSizeMake(138, 122);
    popOverCat.delegate = self;
    popOverCat.sourceView = sender;
    popOverCat.sourceRect = sender.bounds;
    popOverCat.permittedArrowDirections = UIPopoverArrowDirectionAny;
    [self presentViewController:categoryPopupViewController animated:YES completion:nil];
}

我做了我的CategoryPopup作为 xib 中的自由格式而且我正在实现下面的委托(delegate)方法

-(UIModalPresentationStyle) adaptivePresentationStyleForPresentationController: (UIPresentationController * ) controller
{
    return UIModalPresentationNone;
}

但它不是作为弹出窗口出现而是全屏出现，有解决方法吗？

Answer 1

您只忘记了一项设置，请在 categoryPopupViewController 之后添加的初始化:

categoryPopupViewController.modalPresentationStyle = UIModalPresentationPopover;