如何成长一个弹出控制器
How to grow a popover controller
我的应用程序中有一个用于 iPad 和 Mac 的弹出窗口控制器(使用 mac 催化剂),我正在尝试找出如何增加弹出窗口的高度当它已经呈现时。我一直在到处搜索如何执行此操作,但我发现的所有内容都是关于在呈现之前而不是之后设置大小。
弹出窗口显示时,其中有一个按钮应该将高度增加 100-150 像素,但我不知道如何
谁能帮我解决这个问题?提前致谢!
这是我的弹出窗口呈现代码:
func openView(sourceView: UIView?, sourceRect: CGRect?) {
let vc = ViewControllerA()
//Try popover
if let sourceView = sourceView,
let sourceRect = sourceRect {
vc.modalPresentationStyle = .popover
if let popover = vc.popoverPresentationController {
vc.preferredContentSize = return CGSize(width: 390, height: 390)
vc.presentationController?.delegate = self
popover.sourceView = sourceView
popover.sourceRect = sourceRect
popover.permittedArrowDirections = [.up, .left]
self.present(vc, animated: true, completion: nil)
return
}
}
//present it normally if there's no source view
vc.modalPresentationStyle = .overCurrentContext
vc.modalTransitionStyle = .crossDissolve
self.present(vc, animated: true, completion: nil)
}
要更改弹出视图中显示的控制器的大小,您应该修改其 preferredContentSize
属性:
@IBAction func showPopover(_ sender: UIButton) {
// Create controller
guard let controller = storyboard?.instantiateViewController(withIdentifier: "Popover") else {
return
}
controller.modalPresentationStyle = .popover
controller.preferredContentSize = CGSize(width: 200, height: 200)
// Configure popover
guard let popover = controller.popoverPresentationController else {
return
}
popover.permittedArrowDirections = .up
popover.sourceView = self.view
popover.sourceRect = sender.frame
popover.delegate = self
present(controller, animated: true, completion: nil)
// Change height after 3 secs
DispatchQueue.main.asyncAfter(deadline: .now() + 3) {
controller.preferredContentSize = CGSize(width: 200, height: 400)
}
}
我的应用程序中有一个用于 iPad 和 Mac 的弹出窗口控制器(使用 mac 催化剂),我正在尝试找出如何增加弹出窗口的高度当它已经呈现时。我一直在到处搜索如何执行此操作,但我发现的所有内容都是关于在呈现之前而不是之后设置大小。
弹出窗口显示时,其中有一个按钮应该将高度增加 100-150 像素,但我不知道如何
谁能帮我解决这个问题?提前致谢!
这是我的弹出窗口呈现代码:
func openView(sourceView: UIView?, sourceRect: CGRect?) {
let vc = ViewControllerA()
//Try popover
if let sourceView = sourceView,
let sourceRect = sourceRect {
vc.modalPresentationStyle = .popover
if let popover = vc.popoverPresentationController {
vc.preferredContentSize = return CGSize(width: 390, height: 390)
vc.presentationController?.delegate = self
popover.sourceView = sourceView
popover.sourceRect = sourceRect
popover.permittedArrowDirections = [.up, .left]
self.present(vc, animated: true, completion: nil)
return
}
}
//present it normally if there's no source view
vc.modalPresentationStyle = .overCurrentContext
vc.modalTransitionStyle = .crossDissolve
self.present(vc, animated: true, completion: nil)
}
要更改弹出视图中显示的控制器的大小,您应该修改其 preferredContentSize
属性:
@IBAction func showPopover(_ sender: UIButton) {
// Create controller
guard let controller = storyboard?.instantiateViewController(withIdentifier: "Popover") else {
return
}
controller.modalPresentationStyle = .popover
controller.preferredContentSize = CGSize(width: 200, height: 200)
// Configure popover
guard let popover = controller.popoverPresentationController else {
return
}
popover.permittedArrowDirections = .up
popover.sourceView = self.view
popover.sourceRect = sender.frame
popover.delegate = self
present(controller, animated: true, completion: nil)
// Change height after 3 secs
DispatchQueue.main.asyncAfter(deadline: .now() + 3) {
controller.preferredContentSize = CGSize(width: 200, height: 400)
}
}