Question

我正在开发一款ios应用。我有一个主视图，在这个视图中我试图提出一个模糊的视图控制器与暗灰色的背景（黑色与不透明度）。问题是状态栏不受此颜色的影响并保持不变。

这是我呈现视图控制器的方式：

let shareViewController = self.storyboard?.instantiateViewControllerWithIdentifier("ShareViewController") as! ShareViewController
            shareViewController.battle = battle
            shareViewController.delegate = self
            let animation = CATransition()
            animation.duration = 1
            animation.type = kCATransitionFade
            self.view.window?.layer.addAnimation(animation, forKey: kCATransition)
            presentViewController(shareViewController, animated: false) {
               () in 
               // nothing here
            }

以下是一些演示此问题的屏幕截图：

这是问题（状态栏颜色）： Problem illustration 这是故事板中的模态视图： storyboard

Answer 1

我无法重现您的问题，以下代码在我的单一视图应用中没有问题：

let viewController = UIViewController()
viewController.modalPresentationStyle = .overFullScreen
viewController.view.backgroundColor = UIColor.black.withAlphaComponent(0.5)

let animation = CATransition()
animation.duration = 1
animation.type = kCATransitionFade
self.view.window?.layer.add(animation, forKey: kCATransition)

self.present(viewController, animated: false, completion: nil)

但是请注意，您应该通过视图的根控制器进行演示。有时，当你从内部控制器出来时，你会得到奇怪的效果：

self.view.window?.rootViewController?.present(viewController, animated: false, completion: nil)

同时确保使用正确的modalPresentationStyle。

Answer 2

将视图控制器设置为UIWindow的根视图控制器，然后将窗口显示在UIWindowLevelAlert级别。

下面是一个 Swift 3 类，用于为所有其他UI元素（包括状态栏）设置模式弹出窗口的动画。稀松布视图用于遮蔽背景UI并拦截触摸以关闭视图。

import UIKit

class ModalViewController: UIViewController {

    private let scrimView: UIView = {
        let view = UIView()
        view.translatesAutoresizingMaskIntoConstraints = false
        view.backgroundColor = UIColor.black
        view.alpha = 0.0
        return view
    }()

    private var myWindow: UIWindow?

    override func viewDidLoad() {
        super.viewDidLoad()
        view.backgroundColor = UIColor.clear

        // Setup scrim View
        view.addSubview(scrimView)
        view.topAnchor.constraint(equalTo: scrimView.topAnchor).isActive = true
        view.leftAnchor.constraint(equalTo: scrimView.leftAnchor).isActive = true
        view.rightAnchor.constraint(equalTo: scrimView.rightAnchor).isActive = true
        view.bottomAnchor.constraint(equalTo: scrimView.bottomAnchor).isActive = true

        let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(dismiss as (Void) -> Void))
        scrimView.addGestureRecognizer(tapGestureRecognizer)

        // Layout custom popups or action sheets
    }

    override func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(animated)

        UIView.animate(withDuration: 0.25) {
            self.scrimView.alpha = 0.5
            // Animate in custom popups or action sheets
        }
    }

    func present() {
        myWindow = UIWindow(frame: UIScreen.main.bounds)
        myWindow?.windowLevel = UIWindowLevelAlert
        myWindow?.backgroundColor = UIColor.clear
        myWindow?.rootViewController = self
        myWindow?.isHidden = false
    }

    func dismiss() {

        UIView.animate(
            withDuration: 0.25,
            animations: {
                self.scrimView.alpha = 0.0
                // Animate out custom popups or action sheets
            },
            completion: { success in
                self.myWindow = nil
            }
        )
    }
}

展示视图：

let modalView = ModalViewController()
modalView.present()

要关闭视图，请点按稀松布上的任意位置。

Answer 3

这个代码适用于我，当我用alpha表示[[1, 10], [13, 12]].map {|s, l| '[02/24/2016][03:37:27.996]'[s, l] }.join(' ') # => "02/24/2016 03:37:27.996" '[02/24/2016][03:37:27.996]'.tr('[]', ' ').strip.squeeze(' ') # => "02/24/2016 03:37:27.996" '[02/24/2016][03:37:27.996]'.gsub(/[\[\]]+/, ' ').strip # => "02/24/2016 03:37:27.996" '[02/24/2016][03:37:27.996]'.scan(/[\d\/:.]+/).join(' ') # => "02/24/2016 03:37:27.996"时！= 1.现在UIViewController喜欢：

UIViewController

然后在let storyBoard = UIStoryboard(name: "Main", bundle: nil) let destinationVC = storyBoard.instantiateViewController(withIdentifier: "AddComment") as! AddCommentViewController destinationVC.modalPresentationStyle = .overCurrentContext //this line is important destinationVC.delegate = self destinationVC.restId = self.restaurant.id self.present(destinationVC, animated: true, completion: nil)视图控制器

中

destinationVC

并将其override func viewWillDisappear(_: Bool) { UIView.animate(withDuration: 1, animations: { () in self.view.backgroundColor = .clear }) super.viewWillDisappear(true) } override func viewWillAppear(_: Bool) { UIView.animate(withDuration: 1, animations: { () in self.view.backgroundColor = UIColor.black.withAlphaComponent(0.5) }) super.viewWillAppear(true) }设置为backgroundColor或故事板中的.clear。所以viewDidLoad涵盖整个屏幕，包括状态栏。

Answer 4

您可能非常实用，只需在模态视图控制器启动时隐藏状态栏：

    override func prefersStatusBarHidden() -> Bool {
    return true
}

Answer 5

以下是您可能正在寻找的解决方案：

if let window = UIApplication.shared.keyWindow {
   window.windowLevel = UIWindowLevelStatusBar + 1
}

此代码背后的主要思想是，您的应用程序的window窗口级别低于状态栏窗口级别。这段代码的作用是，只需将窗口的窗口级别高于状态栏窗口级别，您的窗口现在可以覆盖状态栏。不要忘记，在呈现视图控制器之前，必须在主线程上调用此代码。祝你好运！

Answer 6

应使用UIViewControllerAnimatedTransitioning执行自定义动画过渡。这是一个用于此目的的教程： https://www.raywenderlich.com/110536/custom-uiviewcontroller-transitions

如果你想要的只是一个淡入淡出动画，你可以通过改变你要显示的viewController的modalTransitionStyle属性来获得它。

尝试以这种方式修复代码：

guard let shareViewController = self.storyboard?.instantiateViewControllerWithIdentifier("ShareViewController") as! ShareViewController else { 
    //Fallback in case of nil?
    return 
}
shareViewController.modalTransitionStyle = .crossDissolve
presentViewController(shareViewController, animated: true, completion: nil)

另请注意，presentViewController(shareViewController, animated: true, completion: nil)适用于swift 2.等效的swift 3将为present(shareViewController, animated: true, completion: nil)

Answer 7

您可以添加此代码以查看 Swift 3 ：

的控制器

let statusView: UIView = UIView(frame: CGRect(x: 0.0, y: -20.0, width: UIScreen.main.bounds.size.width, height: 20.0))
statusView.backgroundColor = UIColor.black
statusView.alpha = 0.8
self.addSubview(self.statusView)

模态视图控制器不包括状态栏

7 个答案: