我在 AppDelegate 中添加根视图处理程序时出错

Question

我正在开发一个启动屏幕类似于 Twitter 的应用程序，我想用 MMDrawer 实现一个抽屉式导航，但我有一个错误提示 "UIViewControllerHierarchyInconsistency '，原因：'添加一个根视图控制器作为视图控制器的子级：'"

我附上了 AppDelegate 代码 我希望你能帮助我，非常感谢你阅读我！问候。

//
//  AppDelegate.swift
//  Rodrigo
//
//  Created by expo on 02/03/17.
//  Copyright © 2017 Rodrigo. All rights reserved.
//

import UIKit

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {


    var window: UIWindow?
    var drawerContainer:MMDrawerController?



    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {

        //Personaliza la vista
        self.window = UIWindow(frame: UIScreen.main.bounds)
        self.window! .backgroundColor = UIColor(red: 35/255, green: 34/255, blue: 34/255, alpha:1)
        self.window!.makeKeyAndVisible()

        let mainStoryboard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)

        //Recuerda al usuario
        let userId = UserDefaults.standard.string(forKey: "userId")
        if (userId != nil )
        {

            buildNavigationDrawer()


        }
            //Fin de recordar al usuario

        else{


            //rootViewController from storyboard

            let navigationController = mainStoryboard.instantiateViewController(withIdentifier: "navigationController")
            self.window!.rootViewController = navigationController


            //logomask
            navigationController.view.layer.mask = CALayer()
            navigationController.view.layer.mask?.contents = UIImage(named: "logoGrande500pts")!.cgImage
            navigationController.view.layer.mask?.bounds = CGRect(x:0, y:0, width: 60, height: 60)
            navigationController.view.layer.mask?.anchorPoint = CGPoint (x: 0.5, y: 0.5)
            navigationController.view.layer.mask?.position = CGPoint (x: navigationController.view.frame.width / 2, y: navigationController.view.frame.height / 2)

            //logo mask background view
            let maskBigView = UIView(frame: navigationController.view.frame)
            maskBigView.backgroundColor = UIColor.white
            navigationController.view.addSubview(maskBigView)
            navigationController.view.bringSubview(toFront: maskBigView)

            //logo mask animation
            let transformAnimation = CAKeyframeAnimation (keyPath: "bounds")
            transformAnimation.duration = 0.5
            transformAnimation.beginTime = CACurrentMediaTime() + 1

            let initalBounds = NSValue(cgRect: (navigationController.view.layer.mask?.bounds)!)
            let secondBounds = NSValue(cgRect: CGRect(x: 0, y: 0, width: 50, height: 50))
            let finalBounds = NSValue(cgRect: CGRect(x: 0, y: 0, width: 2000, height: 2000))

            transformAnimation.values = [initalBounds, secondBounds, finalBounds]
            transformAnimation.keyTimes = [0, 0.5, 1]
            transformAnimation.timingFunctions = [CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut), CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)]
            transformAnimation.isRemovedOnCompletion = false
            transformAnimation.fillMode = kCAFillModeForwards
            navigationController.view.layer.mask?.add(transformAnimation, forKey: "maskAnimation")

            UIView.animate(withDuration: 0.1, delay: 1.35, options: UIViewAnimationOptions.curveEaseIn,
                           animations: {
                            maskBigView.alpha = 0.0
            },
                           completion: {finished in
                            maskBigView.removeFromSuperview()
            })



            UIView.animate(withDuration: 0.25,
                           delay: 1.3,
                           options: UIViewAnimationOptions(),
                           animations: {
                            self.window!.rootViewController!.view.transform = CGAffineTransform(scaleX: 1.05, y: 1.05)


            },
                           completion: {finished in
                            UIView.animate(withDuration: 0.3,
                                           delay: 0.0,
                                           options : UIViewAnimationOptions.curveEaseInOut,
                                           animations: {
                                            self.window!.rootViewController!.view.transform = CGAffineTransform.identity
                            },
                                           completion: nil
                            )
            })

        }


        // Override point for customization after application launch.
        return true
    }

    func applicationWillResignActive(_ application: UIApplication) {
        // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
        // Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game.
    }

    func applicationDidEnterBackground(_ application: UIApplication) {
        // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
        // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
    }

    func applicationWillEnterForeground(_ application: UIApplication) {
        // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
    }

    func applicationDidBecomeActive(_ application: UIApplication) {
        // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
    }

    func applicationWillTerminate(_ application: UIApplication) {
        // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
    }

    func CAAnimationDelegate (anim: CAAnimation!, finished flag: Bool){
        self.window!.rootViewController!.view.layer.mask=nil
    }



    func buildNavigationDrawer(){

        //Personaliza la vista
        self.window = UIWindow(frame: UIScreen.main.bounds)
        self.window! .backgroundColor = UIColor(red: 35/255, green: 34/255, blue: 34/255, alpha:1)
        self.window!.makeKeyAndVisible()



        let mainStoryBoard:UIStoryboard = UIStoryboard(name:"Main", bundle:nil)
        let navigationController:PrincipalViewController = mainStoryBoard.instantiateViewController(withIdentifier: "PrincipalViewController") as! PrincipalViewController
        let leftSideMenu:LeftSideViewController = mainStoryBoard.instantiateViewController(withIdentifier: "LeftSideViewController") as! LeftSideViewController
        let rightSideMenu:RightSideViewController = mainStoryBoard.instantiateViewController(withIdentifier: "RightSideViewController") as! RightSideViewController


        let mainPageNav = UINavigationController(rootViewController: navigationController)


     window?.rootViewController = drawerContainer
     self.window?.rootViewController = mainPageNav


        let leftSideMenuNav = UINavigationController(rootViewController:leftSideMenu)
        let rightSideMenuNav = UINavigationController(rootViewController:rightSideMenu)


        drawerContainer = MMDrawerController(center: mainPageNav, leftDrawerViewController: leftSideMenuNav, rightDrawerViewController: rightSideMenuNav)

        drawerContainer!.openDrawerGestureModeMask = MMOpenDrawerGestureMode.panningCenterView
        drawerContainer!.closeDrawerGestureModeMask = MMCloseDrawerGestureMode.panningCenterView



        /*
         let navigationController = mainStoryboard.instantiateViewController(withIdentifier: "PrincipalViewController") as! PrincipalViewController
         let mainPageNav = UINavigationController(rootViewController: navigationController)
         self.window?.rootViewController = mainPageNav
        */

        //logomask
        navigationController.view.layer.mask = CALayer()
        navigationController.view.layer.mask?.contents = UIImage(named: "logoGrande500pts")!.cgImage
        navigationController.view.layer.mask?.bounds = CGRect(x:0, y:0, width: 60, height: 60)
        navigationController.view.layer.mask?.anchorPoint = CGPoint (x: 0.5, y: 0.5)
        navigationController.view.layer.mask?.position = CGPoint (x: navigationController.view.frame.width / 2, y: navigationController.view.frame.height / 2)
        //logo mask background view
        let maskBigView = UIView(frame: navigationController.view.frame)
        maskBigView.backgroundColor = UIColor.white
        navigationController.view.addSubview(maskBigView)
        navigationController.view.bringSubview(toFront: maskBigView)
        //logo mask animation
        let transformAnimation = CAKeyframeAnimation (keyPath: "bounds")
        transformAnimation.duration = 0.5
        transformAnimation.beginTime = CACurrentMediaTime() + 1
        let initalBounds = NSValue(cgRect: (navigationController.view.layer.mask?.bounds)!)
        let secondBounds = NSValue(cgRect: CGRect(x: 0, y: 0, width: 50, height: 50))
        let finalBounds = NSValue(cgRect: CGRect(x: 0, y: 0, width: 2000, height: 2000))
        transformAnimation.values = [initalBounds, secondBounds, finalBounds]
        transformAnimation.keyTimes = [0, 0.5, 1]
        transformAnimation.timingFunctions = [CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut), CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)]
        transformAnimation.isRemovedOnCompletion = false
        transformAnimation.fillMode = kCAFillModeForwards
        navigationController.view.layer.mask?.add(transformAnimation, forKey: "maskAnimation")
        UIView.animate(withDuration: 0.1, delay: 1.35, options: UIViewAnimationOptions.curveEaseIn,
                       animations: {
                        maskBigView.alpha = 0.0
        },
                       completion: {finished in
                        maskBigView.removeFromSuperview()
        })
        UIView.animate(withDuration: 0.25,
                       delay: 1.3,
                       options: UIViewAnimationOptions(),
                       animations: {
                        self.window!.rootViewController!.view.transform = CGAffineTransform(scaleX: 1.05, y: 1.05)
        },
                       completion: {finished in
                        UIView.animate(withDuration: 0.3,
                                       delay: 0.0,
                                       options : UIViewAnimationOptions.curveEaseInOut,
                                       animations: {
                                        self.window!.rootViewController!.view.transform = CGAffineTransform.identity
                        },
                                       completion: nil
                        )
        })


    }


}

Answer 1

你得到的错误很清楚。

问题出在这里：

window?.rootViewController = drawerContainer
self.window?.rootViewController = mainPageNav

您正在设置rootViewController，然后在下一行，用不同的东西再次设置它。

然后，几行之后，你这样做：

drawerContainer = MMDrawerController(center: mainPageNav, leftDrawerViewController: leftSideMenuNav, rightDrawerViewController: rightSideMenuNav)

您正在获取窗口的 rootViewController，并尝试将其作为子级添加到另一个容器视图控制器。

明显的修复：

1. 删除这一行：

   self.window?.rootViewController = mainPageNav
   

2. 更改rootViewController 赋值和drawerContainer 实例化的顺序。现在，你正在扔掉原来的 drawerContainer 是什么（如果它有任何价值的话）。

   drawerContainer = MMDrawerController(center: mainPageNav, leftDrawerViewController: leftSideMenuNav, rightDrawerViewController: rightSideMenuNav)
   

   需要提前来

   window?.rootViewController = drawerContainer
   

您的代码可能还有更多问题，但这两个肯定是问题。

Answer 2

我将我的代码附在解决方案中

//
//  AppDelegate.swift
//  Expodiseño
//
//  Created by expo on 02/03/17.
//  Copyright © 2017 Creategia360. All rights reserved.
//

import UIKit

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?
    var drawerContainer:MMDrawerController?


    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {

        //Personaliza la vista
        self.window = UIWindow(frame: UIScreen.main.bounds)
        self.window! .backgroundColor = UIColor(red: 35/255, green: 34/255, blue: 34/255, alpha:1)
        self.window!.makeKeyAndVisible()

        let mainStoryboard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)

        //Recuerda al usuario
        let userId = UserDefaults.standard.string(forKey: "userId")
        if (userId != nil )
        {

            //let mainStoryboard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
            let navigationController = mainStoryboard.instantiateViewController(withIdentifier: "PrincipalViewController") as! PrincipalViewController
            let mainPageNav = UINavigationController(rootViewController: navigationController)
            self.window?.rootViewController = mainPageNav

            //logomask
            navigationController.view.layer.mask = CALayer()
            navigationController.view.layer.mask?.contents = UIImage(named: "logoGrande500pts")!.cgImage
            navigationController.view.layer.mask?.bounds = CGRect(x:0, y:0, width: 60, height: 60)
            navigationController.view.layer.mask?.anchorPoint = CGPoint (x: 0.5, y: 0.5)
            navigationController.view.layer.mask?.position = CGPoint (x: navigationController.view.frame.width / 2, y: navigationController.view.frame.height / 2)

            //logo mask background view
            let maskBigView = UIView(frame: navigationController.view.frame)
            maskBigView.backgroundColor = UIColor.white
            navigationController.view.addSubview(maskBigView)
            navigationController.view.bringSubview(toFront: maskBigView)

            //logo mask animation
            let transformAnimation = CAKeyframeAnimation (keyPath: "bounds")
            transformAnimation.duration = 0.5
            transformAnimation.beginTime = CACurrentMediaTime() + 1

            let initalBounds = NSValue(cgRect: (navigationController.view.layer.mask?.bounds)!)
            let secondBounds = NSValue(cgRect: CGRect(x: 0, y: 0, width: 50, height: 50))
            let finalBounds = NSValue(cgRect: CGRect(x: 0, y: 0, width: 2000, height: 2000))

            transformAnimation.values = [initalBounds, secondBounds, finalBounds]
            transformAnimation.keyTimes = [0, 0.5, 1]
            transformAnimation.timingFunctions = [CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut), CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)]
            transformAnimation.isRemovedOnCompletion = false
            transformAnimation.fillMode = kCAFillModeForwards
            navigationController.view.layer.mask?.add(transformAnimation, forKey: "maskAnimation")

            UIView.animate(withDuration: 0.1, delay: 1.35, options: UIViewAnimationOptions.curveEaseIn,
                           animations: {
                            maskBigView.alpha = 0.0
            },
                           completion: {finished in
                            maskBigView.removeFromSuperview()
            })



            UIView.animate(withDuration: 0.25,
                           delay: 1.3,
                           options: UIViewAnimationOptions(),
                           animations: {
                            self.window!.rootViewController!.view.transform = CGAffineTransform(scaleX: 1.05, y: 1.05)


            },
                           completion: {finished in
                            UIView.animate(withDuration: 0.3,
                                           delay: 0.0,
                                           options : UIViewAnimationOptions.curveEaseInOut,
                                           animations: {
                                            self.window!.rootViewController!.view.transform = CGAffineTransform.identity
                            },
                                           completion: nil
                            )
            })

       buildNavigationDrawer()

        }
            //Fin de recordar al usuario

        else{



            //rootViewController from storyboard

            let navigationController = mainStoryboard.instantiateViewController(withIdentifier: "navigationController")
            self.window!.rootViewController = navigationController


            //logomask
            navigationController.view.layer.mask = CALayer()
            navigationController.view.layer.mask?.contents = UIImage(named: "logoGrande500pts")!.cgImage
            navigationController.view.layer.mask?.bounds = CGRect(x:0, y:0, width: 60, height: 60)
            navigationController.view.layer.mask?.anchorPoint = CGPoint (x: 0.5, y: 0.5)
            navigationController.view.layer.mask?.position = CGPoint (x: navigationController.view.frame.width / 2, y: navigationController.view.frame.height / 2)

            //logo mask background view
            let maskBigView = UIView(frame: navigationController.view.frame)
            maskBigView.backgroundColor = UIColor.white
            navigationController.view.addSubview(maskBigView)
            navigationController.view.bringSubview(toFront: maskBigView)

            //logo mask animation
            let transformAnimation = CAKeyframeAnimation (keyPath: "bounds")
            transformAnimation.duration = 0.5
            transformAnimation.beginTime = CACurrentMediaTime() + 1

            let initalBounds = NSValue(cgRect: (navigationController.view.layer.mask?.bounds)!)
            let secondBounds = NSValue(cgRect: CGRect(x: 0, y: 0, width: 50, height: 50))
            let finalBounds = NSValue(cgRect: CGRect(x: 0, y: 0, width: 2000, height: 2000))

            transformAnimation.values = [initalBounds, secondBounds, finalBounds]
            transformAnimation.keyTimes = [0, 0.5, 1]
            transformAnimation.timingFunctions = [CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut), CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)]
            transformAnimation.isRemovedOnCompletion = false
            transformAnimation.fillMode = kCAFillModeForwards
            navigationController.view.layer.mask?.add(transformAnimation, forKey: "maskAnimation")

            UIView.animate(withDuration: 0.1, delay: 1.35, options: UIViewAnimationOptions.curveEaseIn,
                           animations: {
                            maskBigView.alpha = 0.0
            },
                           completion: {finished in
                            maskBigView.removeFromSuperview()
            })



            UIView.animate(withDuration: 0.25,
                           delay: 1.3,
                           options: UIViewAnimationOptions(),
                           animations: {
                            self.window!.rootViewController!.view.transform = CGAffineTransform(scaleX: 1.05, y: 1.05)


            },
                           completion: {finished in
                            UIView.animate(withDuration: 0.3,
                                           delay: 0.0,
                                           options : UIViewAnimationOptions.curveEaseInOut,
                                           animations: {
                                            self.window!.rootViewController!.view.transform = CGAffineTransform.identity
                            },
                                           completion: nil
                            )
            })

        }


        // Override point for customization after application launch.
        return true
    }

    func applicationWillResignActive(_ application: UIApplication) {
        // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
        // Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game.
    }

    func applicationDidEnterBackground(_ application: UIApplication) {
        // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
        // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
    }

    func applicationWillEnterForeground(_ application: UIApplication) {
        // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
    }

    func applicationDidBecomeActive(_ application: UIApplication) {
        // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
    }

    func applicationWillTerminate(_ application: UIApplication) {
        // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
    }

    func CAAnimationDelegate (anim: CAAnimation!, finished flag: Bool){
        self.window!.rootViewController!.view.layer.mask=nil
    }

    func buildNavigationDrawer(){

        let mainStoryBoard:UIStoryboard = UIStoryboard(name:"Main", bundle:nil)
        let navigationController:PrincipalViewController = mainStoryBoard.instantiateViewController(withIdentifier: "PrincipalViewController") as! PrincipalViewController
        let leftSideMenu:LeftSideViewController = mainStoryBoard.instantiateViewController(withIdentifier: "LeftSideViewController") as! LeftSideViewController
        let rightSideMenu:RightSideViewController = mainStoryBoard.instantiateViewController(withIdentifier: "RightSideViewController") as! RightSideViewController


        let mainPageNav = UINavigationController(rootViewController: navigationController)
        let leftSideMenuNav = UINavigationController(rootViewController:leftSideMenu)
        let rightSideMenuNav = UINavigationController(rootViewController:rightSideMenu)


        //  self.window!.rootViewController = navigationController
        drawerContainer = MMDrawerController(center: mainPageNav, leftDrawerViewController: leftSideMenuNav, rightDrawerViewController: rightSideMenuNav)

        drawerContainer!.openDrawerGestureModeMask = MMOpenDrawerGestureMode.panningCenterView
        drawerContainer!.closeDrawerGestureModeMask = MMCloseDrawerGestureMode.panningCenterView

        window?.rootViewController = drawerContainer
        //self.window?.rootViewController = mainPageNav

    }

}