我正在 iPad 上通过 uibutton 展示弹出 Controller 。我将 UIPopoverController 的委托(delegate)设置为主视图 Controller 。 “popoverControllerShouldDismissPopover”和“popoverControllerDidDismissPopover”都没有被调用。我错过了什么吗？
class MainVC: UIViewController,UIPopoverControllerDelegate
@IBAction func btnTPD(sender: UIButton) {
var vc = MyXIB(nibName: "MyXIB",bundle: nil)
var nav = UINavigationController(rootViewController: vc)
var popover = UIPopoverController(contentViewController: nav)
popover.delegate = self
popover.popoverContentSize = CGSize(width: 283, height: view.bounds.height * 0.6)
popover.presentPopoverFromRect(sender.frame, inView: self.view, permittedArrowDirections: UIPopoverArrowDirection.Any, animated: false)
}
func popoverControllerShouldDismissPopover(popoverController: UIPopoverController) -> Bool {
println("SHOULD DISMISS")
return true
}
func popoverControllerDidDismissPopover(popoverController: UIPopoverController) {
println("DID DISMISS")
}
最佳答案
看来我的 UIPopoverController 实例(var popover)需要在“btnTPD”函数之外声明才能使委托(delegate)函数正常工作。
class MainVC: UIViewController,UIPopoverControllerDelegate {
var popover: UIPopoverController!
@IBAction func tapped(sender: UIButton) {
var vc = MyXIB(nibName: "MyXIB",bundle: nil)
var nav = UINavigationController(rootViewController: vc)
popover = UIPopoverController(contentViewController: nav)
popover.delegate = self
popover.popoverContentSize = CGSize(width: 283, height: view.bounds.height * 0.6)
popover.presentPopoverFromRect(sender.frame, inView: self.view, permittedArrowDirections: UIPopoverArrowDirection.Any, animated: false)
}
func popoverControllerShouldDismissPopover(popoverController: UIPopoverController) -> Bool {
println("SHOULD DISMISS")
return true
}
func popoverControllerDidDismissPopover(popoverController: UIPopoverController) {
println("DID DISMISS")
}
}
关于ios - UIPopoverController popoverControllerDidDismissPopover 不起作用，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/32491670/