I am developing an application in which the launch screen is similar to Twitter and I wanted to implement a navigation drawer with MMDrawer, but I have an error that says "UIViewControllerHierarchyInconsistency ', reason:' adding a root view controller as a child of view controller: '"
I attached the AppDelegate code I hope you can help me, thank you very much for reading me! regards.
//
// 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
)
})
}
}
The error you are getting is pretty clear.
The problem is here:
You are setting the
rootViewControllerand then on the very next line, setting it again with something different.Then, a few lines later, you do this:
You are taking the
rootViewControllerof your window, and trying to add it as a child to another container view controller.Obvious fixes:
Remove this line:
Change the order of the
rootViewControllerassignment anddrawerContainerinstantiation. Right now, you are throwing away whatever the originaldrawerContainerwas (if it had a value at all).needs to come before
There are probably more problems with your code, but these 2 are issues for sure.