如何在iOS 8中正确呈现popover

本文介绍了如何在iOS 8中正确呈现popover的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我正在尝试将UIPopoverView添加到我的Swift iOS 8应用程序中，但我无法访问PopoverContentSize属性，因为popover没有显示正确的形状。我的代码：

I'm trying to add a UIPopoverView to my Swift iOS 8 app, but i am unable to access the PopoverContentSize property, as the popover does not show in the correct shape. my code:

var popover: UIPopoverController? = nil func addCategory() { var newCategory = storyboard.instantiateViewControllerWithIdentifier("NewCategory") as UIViewController var nav = UINavigationController(rootViewController: newCategory) popover = UIPopoverController(contentViewController: nav) popover!.setPopoverContentSize(CGSizeMake(550, 600), animated: true) popover!.delegate = self popover!.presentPopoverFromBarButtonItem(self.navigationItem.rightBarButtonItem, permittedArrowDirections: UIPopoverArrowDirection.Any, animated: true) }

输出：

当我通过UIPopoverPresentationController做同样的事情时，我仍然没有完成它。这是我的代码：

When I am doing the same thing through UIPopoverPresentationController, I still don't get it done. this is my code:

func addCategory() { var popoverContent = self.storyboard.instantiateViewControllerWithIdentifier("NewCategory") as UIViewController var nav = UINavigationController(rootViewController: popoverContent) nav.modalPresentationStyle = UIModalPresentationStyle.Popover var popover = nav.popoverPresentationController as UIPopoverPresentationController popover.delegate = self popover.popoverContentSize = CGSizeMake(1000, 300) popover.sourceView = self.view popover.sourceRect = CGRectMake(100,100,0,0) self.presentViewController(nav, animated: true, completion: nil) }

我得到完全相同的输出。

I get the exact same output.

如何自定义弹出窗口的大小？任何帮助都将受到高度赞赏！

How do I customize the size of my popover? Any help would be highly appreciated!

推荐答案

好的，一位室友看了看它并想出来了：

Okay, A housemate took a look at it and figured it out:

func addCategory() { var popoverContent = self.storyboard?.instantiateViewControllerWithIdentifier("NewCategory") as UIViewController var nav = UINavigationController(rootViewController: popoverContent) nav.modalPresentationStyle = UIModalPresentationStyle.Popover var popover = nav.popoverPresentationController popoverContent.preferredContentSize = CGSizeMake(500,600) popover.delegate = self popover.sourceView = self.view popover.sourceRect = CGRectMake(100,100,0,0) self.presentViewController(nav, animated: true, completion: nil) }

就是这样。

您不再与popover本身交谈，您可以通过调用属性 preferredContentSize

You don't talk to the popover itself anymore, you talk to the view controller inside of it to set the content size, by calling the property preferredContentSize