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UIViewController+CurrentViewController.swift - Get the actual currently displaying view in your app
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| // | |
| // UIViewController+CurrentViewController.swift | |
| // | |
| // Created by AppleBetas on 2017-01-24. | |
| // Copyright © 2017 AppleBetas. All rights reserved. | |
| // | |
| import UIKit | |
| extension UIViewController { | |
| var currentViewController: UIViewController { | |
| get { | |
| if let presentedViewController = presentedViewController { | |
| return presentedViewController | |
| } | |
| return self | |
| } | |
| } | |
| } | |
| extension UINavigationController { | |
| override var currentViewController: UIViewController { | |
| get { | |
| if let viewController = visibleViewController { | |
| return viewController.currentViewController | |
| } | |
| return super.currentViewController | |
| } | |
| } | |
| } | |
| extension UITabBarController { | |
| override var currentViewController: UIViewController { | |
| get { | |
| if let viewController = selectedViewController { | |
| return viewController.currentViewController | |
| } | |
| return super.currentViewController | |
| } | |
| } | |
| } | |
| extension UISplitViewController { | |
| override var currentViewController: UIViewController { | |
| get { | |
| if let viewController = viewControllers.first { | |
| return viewController.currentViewController | |
| } | |
| return super.currentViewController | |
| } | |
| } | |
| } | |
| extension UIWindow { | |
| var currentViewController: UIViewController? { | |
| get { | |
| if let viewController = rootViewController { | |
| return viewController.currentViewController | |
| } | |
| return nil | |
| } | |
| } | |
| } | |
| extension UIApplication { | |
| var currentViewController: UIViewController? { | |
| get { | |
| if let window = self.keyWindow { | |
| return window.currentViewController | |
| } | |
| return nil | |
| } | |
| } | |
| } |
Add support for UISplitViewController.
How this works:
If two view controllers. are being displayed at once, it will choose the primary (leftmost) view controller. Otherwise, it'll work like normal.
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You can call this in many ways, and it'll get the frontmost view controller in your app. This means that even if you have a modal view controller, being presented by another view controller, after another view controller, in a navigation controller, inside a tab bar controller, it'll get the first view controller, the one that the user actually sees.
Examples
Get app's frontmost view controller
Get window's frontmost view controller
window.currentViewControllerGet view controller's frontmost view controller (assuming self is a UIViewController or one of it's subclasses)