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
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)
其他回答
你可以通过将你的视图直接添加到keyWindow来实现:
UIView *myView = /* <- Your custom view */;
UIWindow *currentWindow = [UIApplication sharedApplication].keyWindow;
[currentWindow addSubview:myView];
更新—适用于Swift 4.1及以上
let currentWindow: UIWindow? = UIApplication.shared.keyWindow
currentWindow?.addSubview(myView)
iOS13及以上更新
已弃用keyWindow。你应该使用以下方法:
UIApplication.shared.windows.first(where: { $0.isKeyWindow })?.addSubview(myView)
这里有一个简单的优雅的解决方案，是为我工作。你可以将导航栏的z位置设置为视图的下方:
self.navigationController.navigationBar.layer.zPosition = -1;
只要记住在完成时将其设置为0即可。
[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];
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)
我将使用一个UIViewController子类，包含一个“容器视图”，它嵌入了你的其他视图控制器。 然后，您将能够在容器视图中添加导航控制器(例如使用嵌入关系segue)。
参见实现容器视图控制器
