我想在任何其他视图，甚至是导航栏上，显示一种“弹出”视图，看起来像这样:
全屏黑色背景，0.5 alpha，可以看到下面的另一个UIViewController。 中间有一个带有一些信息的UIView窗口，(如果你想知道一切，一个日历)。
为了做到这一点，我已经创建了一个UIViewController，它包含了两个uiview (background和window)，我试图显示它。我尝试了一个简单的[mySuperVC addSubview:myPopUpVC。视图]，但我仍然有上面的导航栏。
我试着把它表示为一个模态，但是下面的UIViewController消失了，我失去了透明效果。
有什么办法可以做到这一点吗，我相信这很简单……
谢谢!
当前回答
Swift版本的检查响应:
Swift 4:
let view = UIView()
view.frame = UIApplication.shared.keyWindow!.frame
UIApplication.shared.keyWindow!.addSubview(view)
Swift 3.1:
let view = UIView()
view.frame = UIApplication.sharedApplication().keyWindow!.frame
UIApplication.sharedApplication().keyWindow!.addSubview(view)
其他回答
@Nam的答案是伟大的，如果你只是想显示你的自定义视图，但如果你的自定义视图需要用户交互，你需要禁用导航栏的交互。
self.navigationController.navigationBar.layer.zPosition = -1
self.navigationController.navigationBar.isUserInteractionEnabled = false
就像Nam的回答中所说的，不要忘记逆转这些变化:
self.navigationController.navigationBar.layer.zPosition = 0
self.navigationController.navigationBar.isUserInteractionEnabled = true
你可以用一个扩展更好的方式做到这一点:
extension UINavigationBar {
func toggle() {
if self.layer.zPosition == -1 {
self.layer.zPosition = 0
self.isUserInteractionEnabled = true
} else {
self.layer.zPosition = -1
self.isUserInteractionEnabled = false
}
}
}
就像这样简单地使用它:
self.navigationController.navigationBar.toggle()
Dalef伟大的解决方案在swift:
self.navigationController?.view.addSubview(view)
[self.navigationController.navigationBar.layer setZPosition:-0.1];
UIView *view = [[UIView alloc]initWithFrame:CGRectMake(10, 20, 35, 35)];
[view setBackgroundColor:[UIColor redColor]];
[self.navigationController.view addSubview:view];
[self.navigationController.view bringSubviewToFront:view];
self.navigationController.view.clipsToBounds = NO;
[self.navigationController.navigationBar.layer setZPosition:0.0];
@Nicolas Bonnet回答的快速版本:
var popupWindow: UIWindow?
func showViewController(controller: UIViewController) {
self.popupWindow = UIWindow(frame: UIScreen.mainScreen().bounds)
controller.view.frame = self.popupWindow!.bounds
self.popupWindow!.rootViewController = controller
self.popupWindow!.makeKeyAndVisible()
}
func viewControllerDidRemove() {
self.popupWindow?.removeFromSuperview()
self.popupWindow = nil
}
不要忘记，窗口必须是一个强属性，因为最初的答案会导致立即释放窗口
You need to add a subview to the first window with the UITextEffectsWindow type. To the first, because custom keyboards add their UITextEffectsWindow, and if you add a subview to it this won't work correctly. Also, you cannot add a subview to the last window because the keyboard, for example, is also a window and you can`t present from the keyboard window. So the best solution I found is to add subview (or even push view controller) to the first window with UITextEffectsWindow type, this window covers accessory view, navbar - everything.
let myView = MyView()
myView.frame = UIScreen.main.bounds
guard let textEffectsWindow = NSClassFromString("UITextEffectsWindow") else { return }
let window = UIApplication.shared.windows.first { window in
window.isKind(of: textEffectsWindow)
}
window?.rootViewController?.view.addSubview(myView)
