I have 2 ViewControllers. I don't have a storyboard. I want to move from the first view to another once everything is done in first viewController. What is the way to do it? It is something like this, the first view shows an image and in the background makes some API calls. After API call succeeds, I want it to move to the second ViewController(LoginActivityViewController). I tried calling this in the first ViewController:
var loginActivity = LoginActivityViewController()
self.navigationController.pushViewController(loginActivity, animated: true)
But, this did not work. How to do this?
Here is my application function in AppDelegate
func application(application: UIApplication!, didFinishLaunchingWithOptions launchOptions: NSDictionary!) -> Bool {
// Override point for customization after application launch.
window = UIWindow(frame: UIScreen.mainScreen().bounds)
let navigationController: UINavigationController = UINavigationController(rootViewController: RootViewController())
navigationController.setNavigationBarHidden(true, animated: false)
window!.rootViewController = navigationController
window!.makeKeyAndVisible()
return true
}
Here is my RootViewController's viewDidLoad()
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
let image1 = UIImage(named: "Default.png")
let imageview = UIImageView(image: image1)
self.view.addSubview(imageview)
var loginActivity = LoginActivityViewController()
self.navigationController.pushViewController(loginActivity, animated: true)
}
this how your method should look with initing a navigation controller properly:
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: NSDictionary?) -> Bool {
window = UIWindow(frame: UIScreen.mainScreen().bounds)
let rootViewController: RootViewController = RootViewController(nibName: "RootViewController", bundle: nil)
let navigationController: UINavigationController = UINavigationController(rootViewController: rootViewController)
window!.rootViewController = navigationController
window!.makeKeyAndVisible()
return true
}
and now you are able to push new view controllers into the hierarchy.
update
if you don't want to show the navigation bar insert this line into the code above.
navigationController.setNavigationBarHidden(true, animated: false)
var next = self.storyboard?.instantiateViewControllerWithIdentifier("DashboardController") as! DashboardController
self.presentViewController(next, animated: true, completion: nil)
don't forget to set ViewController StoryBoard Id in StoryBoard -> identity inspector
Related
I have a LoginViewController and want to push MainTabBarController
So, I do this
let controller = MainTabBarController()
navigationController?.pushViewController(controller, animated: true)
LoginViewController has a navigation controller but MainTabBarController doesn't for some reasons.
I have two questions, if my flow is LoginViewController -> MainTabBarController -> Other Controllers embedded in MainTabBarController, and I want to log out, how do I get to the LoginViewController without memory leaks? I was thinking about something like popToRootViewController but not sure if it would work.
This is how I'm creating other controllers in MainTabBarController
private func createNewViewController(viewController: UIViewController, title: String, imageName: String) -> UIViewController {
navigationController?.navigationBar.prefersLargeTitles = true
navigationController?.tabBarItem = UITabBarItem(title: title, image: UIImage(systemName: imageName), selectedImage: nil)
navigationController?.view.backgroundColor = .white
viewController.navigationItem.title = title
return viewController
}
But it doesn't really work since navigationController is nil. I don't use storyboards at all though.
EDIT: Apparently embedding a UITabBarController inside a UINavigationController is not supported.
Try this design. When LoginVC appears it checks if user is logged in and re-directs to MainVC. This is just a skelton, add more details as you go forward:
class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow?
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
window = UIWindow()
window?.makeKeyAndVisible()
window?.rootViewController = LoginVC()
return true
}
}
class LoginVC: UIViewController {
var isUserLoggedIn = true
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
view.backgroundColor = .red
if isUserLoggedIn {
present(MainVC(), animated: true)
}
}
}
class MainVC: UITabBarController {
override func viewDidLoad() {
super.viewDidLoad()
modalPresentationStyle = .fullScreen
let firstVC = UIViewController()
firstVC.tabBarItem = UITabBarItem(title: "firstVC", image: nil, selectedImage: nil)
let secondVC = UIViewController()
secondVC.tabBarItem = UITabBarItem(title: "secondVC", image: nil, selectedImage: nil)
viewControllers = [firstVC, secondVC]
}
}
My app structure:
firstView: UIViewController with UINavigationController -- secondView UITabBarController with several UIViewControllers
start app, firstView:
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
let vc = ViewController()
let navContr = UINavigationController(rootViewController: vc)
self.window? = UIWindow(frame: UIScreen.main.bounds)
self.window?.rootViewController = navContr
self.window?.makeKeyAndVisible()
return true
}
In firtView I click button to open secondView:
let vc = MyTabController() // my UITabBarController
self.navigationController?.pushViewController(vc, animated: true)
start secondView:
class MyTabController: UITabBarController {
override func viewDidLoad() {
super.viewDidLoad()
let gen = MyViewController()
let tabGen = UITabBarItem()
gen.tabBarItem = tabGen
tabGen.image = UIImage(named: "general")
tabGen.title = "Все вопросы"
viewControllers = [gen]
....
}
In my secondView I want set Title, set UISearchControlleer in every tab. But if I write in ViewController
navigationItem.title = "myTitle" nothing changes. I see button "Back" only.
Here's the screenshot
Set title like this in viewDidLoad() Method
self.title = "Your Title"
I have been teaching my self how to develop and I got to the point to where I need guidance from experts. I created some of the user interface programmatically using the MVC structure. My question is how can I embed my navigation controller into my tab bar controller so my tab bar controller can be on every screen. I made the tab bar controller in main.storyboard and referenced it in the View controller I named Home Controller.
let storyboard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
let tabViewController = storyboard.instantiateViewController(withIdentifier: "TabBar")
self.present(tabViewController, animated: true, completion: nil)
The code above is in the view did load function. I was wondering do I need to change up the root view controller in my app delegates?
window = UIWindow(frame: UIScreen.main.bounds)
window?.makeKeyAndVisible()
let layout = UICollectionViewFlowLayout()
window?.rootViewController = UINavigationController(rootViewController: HomeController(collectionViewLayout: layout))
This is in my finished launched func.
Use following lines
var navigationController = UINavigationController(rootViewController: viewController));
tabBarController.viewControllers = [navigationController,firstViewControllersecondViewController, ]
create a separate UITabBarController class and initialize it in AppDelegate like this:
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
// Override point for customization after application launch.
window = UIWindow(frame: UIScreen.main.bounds)
window?.rootViewController = MyTabBarController()
window?.makeKeyAndVisible()
return true
}
and the custom tabBarController
import UIKit
class MyTabBarController: UITabBarController {
override func viewDidLoad() {
super.viewDidLoad()
self.tabBar.barTintColor = UIColor.black
self.tabBar.tintColor = UIColor.white
self.tabBar.unselectedItemTintColor = UIColor.white.withAlphaComponent(0.4)
let firstViewController = FirstViewController()
let firstViewTabBarItem = UITabBarItem(title: "First", image: UIImage(named: "calculator"), selectedImage: UIImage(named: "calculator"))
firstViewController.tabBarItem = firstViewTabBarItem
firstViewController.tabBarItem.tag = 0
let historyViewController = HistoricDataViewController()
historyViewController.tabBarItem = UITabBarItem(tabBarSystemItem: .history, tag: 1)
let tabBarList = [calculateViewController, historyViewController]
viewControllers = tabBarList.map{UINavigationController(rootViewController: $0)}
}
}
Hope this example helps.
I'm rebuilding an app without storyboards and the part of it that I'm having the most trouble with is navigating view-to-view programatically. Few things are written out there which don't use storyboards, so finding an answer for this has been tough.
My problem is pretty simple. I have my ViewController and my SecondViewController and I want to push from the former to the latter.
In AppDelegate:
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
// Override point for customization after application launch.
window = UIWindow(frame: UIScreen.mainScreen().bounds)
window?.backgroundColor = UIColor.whiteColor()
window?.rootViewController = ViewController()
window?.makeKeyAndVisible()
return true
}
Then in ViewController.swift:
class ViewController: UIViewController, AVAudioPlayerDelegate, UITextFieldDelegate {
override func viewDidLoad() {
super.viewDidLoad()
startFinishButton.setTitle("Begin", forState: .Normal)
startFinishButton.addTarget(self, action: "moveToSecondViewController", forControlEvents: .TouchUpInside)
view.addSubview <*> startFinishButton
}
func moveToSecondViewController(sender: UIButton) {
let vc = SecondViewController()
println(self.navigationController) // returns nil
self.navigationController?.pushViewController(vc, animated: true)
}
}
Printing self.navigationController returns nil. I've tried doing:
var navController = UINavigationController() when the ViewController class is created (but outside of ViewDidLoad, right under the class declaration) and done the push using the navController var but that hasn't worked.
I'm thinking maybe the solution is to create a navigation controller in App Delegate that the whole app would use, I guess as a global variable?
My hope is that this post can serve many others who are new to Swift and want to remove storyboards from their app.
Thanks for taking a look and for your help.
In Swift 3
Place this code inside didFinishLaunchingWithOptions method in AppDelegate class.
window = UIWindow(frame: UIScreen.main.bounds)
let mainController = MainViewController() as UIViewController
let navigationController = UINavigationController(rootViewController: mainController)
navigationController.navigationBar.isTranslucent = false
self.window?.rootViewController = navigationController
self.window?.makeKeyAndVisible()
In AppDelegate
var window: UIWindow?
var navController: UINavigationController?
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
navController = UINavigationController()
var viewController: ViewController = ViewController()
self.navController!.pushViewController(viewController, animated: false)
self.window = UIWindow(frame: UIScreen.mainScreen().bounds)
self.window!.rootViewController = navController
self.window!.backgroundColor = UIColor.whiteColor()
self.window!.makeKeyAndVisible()
return true
}
In ViewController
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
self.title = "FirstVC"
var startFinishButton = UIButton.buttonWithType(UIButtonType.System) as! UIButton
startFinishButton.frame = CGRectMake(100, 100, 100, 50)
startFinishButton.backgroundColor = UIColor.greenColor()
startFinishButton.setTitle("Test Button", forState: UIControlState.Normal)
startFinishButton.addTarget(self, action: "buttonAction:", forControlEvents: UIControlEvents.TouchUpInside)
self.view.addSubview(startFinishButton)
}
func buttonAction(sender:UIButton!)
{
println("Button tapped")
let vc = SecondViewController()
self.navigationController?.pushViewController(vc, animated: true)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
In Swift 5 and Xcode 13 there is a SceneDelegate along with the AppDelegate. So now to completely remove the storyboard from a project and embed the view controller in a navigation controller do the following:
Delete the actual storyboard in the Project Navigator
Select the project in the Project Navigator, select Target and then the General tab, then delete the storyboard from Main Interface
In the info.plist file delete the storyboard from:
Application Scene Manifest > Scene Configuration > Application Session Role > Item 0 (Default Configuration) > Storyboard Name
Then in the scene delegate change the scene function to look like this:
func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
guard let windowScene = (scene as? UIWindowScene) else { return }
let window = UIWindow(windowScene: windowScene)
let navigationController = UINavigationController(rootViewController: YourViewController())
window.rootViewController = navigationController
self.window = window
window.makeKeyAndVisible()
}
i'm new in ios development.
I use SWRevealViewController to add back side menu in my app.
I want to add back button to each view in Menu.
When I tap on the back button, I want to always go to initial(MainTabbedView) view.
Ui flow :
-->MainTabbedVIew-->(toggle_menu)-->(select Item1)-->Item 1-->(Back pressed)-->MainTabbedView
I found a similar question , ios SWRevealViewController pop from rear to front, but it is still has no answer.
I added a button to view and write some code :
#IBAction func backPressed(sender: UIBarButtonItem) {
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let vc = storyboard.instantiateViewControllerWithIdentifier("mainTabbedScreen") as UIViewController!
self.revealViewController().pushFrontViewController(vc, animated: true)
}
It works, but controller always recreated,
for example: in TabBarController selected tab always resets.
I want to add NavigationController behavior(pop previous view) to SWRevealViewController menu items.
My storyboard:
http://i.imgur.com/kf5TlAR.png?1
I found solution.
In my application , I began to use MMDrawerController instead of SWRevealViewController
I use UINavigationController as central ViewController , and when Menu click occurs id call
pushViewController(controller,animated: true)
my AppDelegate:
class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow?
var backSideController:MMDrawerController?
var roorNavigationController:UINavigationController?
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
// Override point for customization after application launch.
var rootController = self.window!.rootViewController
let storyBoard : UIStoryboard = UIStoryboard(name:"Main",bundle:nil);
var centerContent = storyBoard.instantiateViewControllerWithIdentifier("Center") as! UIViewController
var left = storyBoard.instantiateViewControllerWithIdentifier("Left") as! Left
var right = storyBoard.instantiateViewControllerWithIdentifier("Right") as! Right
roorNavigationController = UINavigationController(rootViewController: centerContent)
backSideController = MMDrawerController(centerViewController: roorNavigationController, leftDrawerViewController: left,rightDrawerViewController: right)
backSideController!.openDrawerGestureModeMask = MMOpenDrawerGestureMode.PanningCenterView
backSideController!.closeDrawerGestureModeMask = MMCloseDrawerGestureMode.PanningCenterView
window!.rootViewController=backSideController
window!.makeKeyAndVisible()
return true
}
func pushController(controller: UIViewController){
self.roorNavigationController?.pushViewController(controller,animated: true)
self.backSideController!.toggleDrawerSide(MMDrawerSide.Left, animated: true, completion: nil)
}
And somewhere in MyMenuController :
#IBAction func pressed(sender: UIButton) {
var newController = self.storyboard?.instantiateViewControllerWithIdentifier("About") as! About
var appDelegate:AppDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
appDelegate.pushController(newController)
}