UIPopoverController,Xcode 6,IOS 8使用Swift [英] UIPopoverController, Xcode 6, IOS 8 using Swift
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问题描述
我在使用swift显示UIPopover时遇到了一些麻烦。注释掉的代码在Objective-C中工作正常,但使用Swift不起作用。当我在我的视图控制器中点击+时,我在调试器中得到click,但是没有弹出窗口。
I'm having some trouble getting a UIPopover to appear using swift. The code that is commented out works fine in Objective-C, but doesn't work using Swift. When I tap the + in my view controller I do get the "click" in my debugger, however no popover appears.
class PlayerInformationTableViewController: UITableViewController, NSFetchedResultsControllerDelegate, UIPopoverControllerDelegate {
@IBOutlet weak var addBarButtonItem: UIBarButtonItem!
var playerInformationViewController = PlayerInformationViewController()
var popover:UIPopoverController? = nil
override func viewDidLoad() {
super.viewDidLoad()
/*
//setup the popover
_cuesPopoverViewController = [self.storyboard instantiateViewControllerWithIdentifier:@"CuesPopoverViewController"];
self.cuesPopover = [[UIPopoverController alloc] initWithContentViewController:_cuesPopoverViewController];
self.cuesPopover.popoverContentSize = CGSizeMake(540, 300);
self.cuesPopover.delegate = self;
*/
playerInformationViewController.storyboard?.instantiateViewControllerWithIdentifier("PlayerInformationViewController")
popover?.contentViewController = playerInformationViewController
popover?.popoverContentSize = CGSizeMake(300, 300)
popover?.delegate = self
// Uncomment the following line to preserve selection between presentations
// self.clearsSelectionOnViewWillAppear = false
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
// self.navigationItem.rightBarButtonItem = self.editButtonItem()
}
@IBAction func addPopover(sender: AnyObject) {
println("Click")
popover?.presentPopoverFromBarButtonItem(addBarButtonItem, permittedArrowDirections: UIPopoverArrowDirection.Any, animated: true)
}
解决方案
override func viewDidLoad() {
super.viewDidLoad()
}
@IBAction func addPopover(sender: AnyObject) {
var popoverViewController = self.storyboard?.instantiateViewControllerWithIdentifier("PlayerInformationViewController") as UIViewController
popoverViewController.modalPresentationStyle = .Popover
popoverViewController.preferredContentSize = CGSizeMake(450, 450)
let popoverPresentationViewController = popoverViewController.popoverPresentationController
popoverPresentationViewController?.permittedArrowDirections = .Any
popoverPresentationViewController?.delegate = self
popoverPresentationViewController?.barButtonItem = sender as UIBarButtonItem
presentViewController(popoverViewController, animated: true, completion: nil)
}
推荐答案
这是一个iOS 8的简单示例。使用iOS 8中的adaptivity apis呈现Popover。
Here is a simple example for iOS 8. Popover are presented using adaptivity apis in iOS 8.
class PlayerInformationTableViewController: UITableViewController, UIPopoverPresentationControllerDelegate, NSFetchedResultsControllerDelegate{
...
@IBAction func addPopover(sender: UIBarButtonItem){
let playerInformationViewController = PlayerInformationViewController()
playerInformationViewController.modalPresentationStyle = .Popover
playerInformationViewController.preferredContentSize = CGSizeMake(300, 300)
let popoverPresentationViewController = playerInformationViewController.popoverPresentationController
popoverPresentationViewController?.permittedArrowDirections = .Any
popoverPresentationViewController?.delegate = self
popoverPresentationController?.barButtonItem = sender
presentViewController(playerInformationViewController, animated: true, completion: nil)
}
func adaptivePresentationStyleForPresentationController(controller: UIPresentationController!) -> UIModalPresentationStyle{
return .None
}
}
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