没有任何箭头的UIPopover

Question

是否有可能提出一个没有任何箭头指向某个地方的弹出窗口？

Answer 1

是的,它可以做到:

 [self.popoverController presentPopoverFromBarButtonItem:anItem   
                                permittedArrowDirections:0
                                                animated:YES];

零代表没有方向.

Answer 2

对于iPhone和swift 2.0试试这个

用于启动弹出窗口的代码

initiatePopover(){
    let popoverContent = self.storyboard?.instantiateViewControllerWithIdentifier("XYZController") as! XYZController
    let nav = UINavigationController(rootViewController: popoverContent)
    nav.modalPresentationStyle = UIModalPresentationStyle.Popover
    let popover = nav.popoverPresentationController
    popoverContent.preferredContentSize = CGSizeMake(250 ,200)
    popover!.delegate = self
    popover!.sourceView = self.view
    popover!.sourceRect = CGRectMake(200,200,0,0)
    popover!.permittedArrowDirections = UIPopoverArrowDirection(rawValue: 0)
    self.presentViewController(nav, animated: true, completion: nil)
}

并将其添加到ViewController中

func adaptivePresentationStyleForPresentationController(controller: UIPresentationController) -> UIModalPresentationStyle {
    return UIModalPresentationStyle.None
}

Answer 3

设置permittedArrowDirections为0.

permittedArrowDirections:0

代码 -

[self.popoverController presentPopoverFromBarButtonItem:anItem   
                                permittedArrowDirections:0
                                                animated:YES];

零告诉"NoDirection".

Answer 4

Swift3,这段代码对我有用

popover.permittedArrowDirections = .init(rawValue: 0)

Answer 5

Swift4：

popover.permittedArrowDirections = []              

Answer 6

对于Swift 2.0和iOS9解决方案是：

popoverViewController?.permittedArrowDirections = UIPopoverArrowDirection()

Answer 7

在 swift 3 中，您可以UIPopoverArrowDirection为此构建一个扩展：

extension UIPopoverArrowDirection {
    public static var noArrow: UIPopoverArrowDirection {
        return UIPopoverArrowDirection(rawValue: 0)
    }
}

你可以这样做：

popoverPresentationController!.permittedArrowDirections = .noArrow

Answer 8

在 Swift 中，您可以简单地执行以下操作：

popoverPresentationController.permittedArrowDirections = []

因为在另一种配置中，您可以使用：

popoverPresentationController.permittedArrowDirections = [.up, .down]