How to represent a startup screen in Storyboards - ios

Question

Right now I have a MainViewController which is embedded in a UINavigationController so the navigation controller is set as initial view controller.
What I want is first time the app starts and only then to show a StartupViewController. But I am not sure how to represent this in my storyboard.
Should this be set as initial view controller if the app starts the first time, if not the navigation controller should be set.
What I tried is to show StartupViewController in MainViewController::viewDidLoad(), but its not working how I wanted too.
Anyone know what is the right approach to do this ?

Answer 1

Hello this code may be helpfull for you :
// MARK: - Application Supporting Funcations -
func loadFirstViewController(viewController: String)
{
// for loading first view Controller
let storyBoard = appDelegate.AppStoryBoard()
/////////////////////////Add Navigation Controller and set Root View Controller///////////////////////////////////////
let object = storyBoard.instantiateViewControllerWithIdentifier(viewController) // for prelogin navigation
self.navigationController = UINavigationController(rootViewController: object)
self.navigationController?.navigationBar.hidden = true
self.loadNavigationControllerToWindow()
}
func loadNavigationControllerToWindow()
{
if self.window == nil
{
self.window = UIWindow(frame: UIScreen.mainScreen().bounds)
}
// for loading root view
self.window!.rootViewController = self.navigationController!
self.window!.makeKeyAndVisible()
}
call this function in didFinishLaunchingWithOptions
if((NSUserDefaults.standardUserDefaults().valueForKey("isFirstTime") != nil))
{
self.loadFirstViewController("LoginVC") // for loading first view controller
}
else
{
self.loadFirstViewController("WelcomeVC") // for loading first view controller
}
put this after you go in second controler viewDidLoad
if((NSUserDefaults.standardUserDefaults().valueForKey("isFirstTime") == nil))
{
NSUserDefaults.standardUserDefaults().setValue("1", forKey: "isFirstTime")
}

Answer 2

This is how I acheived in my app.
Add this in appdelegate applicationdidfinishlaunching.
NSUserDefaults *defaults =[NSUserDefaults standardUserDefaults];
if (![defaults boolForKey:#"FirstTime"])
{
//NSLog(#"Enter First Time ");
UIStoryboard *storyBoard = [UIStoryboard storyboardWithName:#"Main" bundle:[NSBundle mainBundle]];
StartupViewController * firstViewController = [storyBoard instantiateViewControllerWithIdentifier:#"StartupViewController"];//AskAndAnswerViewId RegisterViewId TagViewId HelpViewId
self.navigationController=[[UINavigationController alloc]initWithRootViewController:firstViewController];
self.window.rootViewController = self.navigationController;
[self.navigationController setNavigationBarHidden:YES];
}
else
{
//NSLog(#"not First Time");
UIStoryboard *storyBoard = [UIStoryboard storyboardWithName:#"Main" bundle:[NSBundle mainBundle]];
HelpViewController *mainviewcontroller = [storyBoard instantiateViewControllerWithIdentifier:#"AskAndAnswerViewId"];
self.navigationController=[[UINavigationController alloc]initWithRootViewController:mainviewcontroller];
self.window.rootViewController = self.navigationController;
[self.navigationController setNavigationBarHidden:YES];
}
Once you reached in Mainviewcontroller change the userdefault value for FirstTime to "NO".

Answer 3

I understand your Question ,
In AppDelegate try to set rootViewController ,
I have store data in the NSUserDefault if user came first time
And try to set rootViewController once he visit first time.
In below Example I have navigate user to Login screen/Home screen
let str = userDefaults.objectForKey("firstTime")
{}else{}

Answer 4

Please don't forget to give identifier to your view controller StartupViewController
-> user interaction enable in StartupViewController
if (UserDefaults.standard.string(forKey: "keepUsername") != nil) {
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let vc = storyboard.instantiateViewController(withIdentifier: "Revealview")
self.present(vc, animated: false, completion: nil)
}
else
{
let storyBoard : UIStoryboard = UIStoryboard(name: "Main", bundle:nil)
let nextViewController = storyBoard.instantiateViewController(withIdentifier: "loginview") as! loginview
self.present(nextViewController, animated:true, completion:nil)
}