At startup, open the specified ViewController

Question

I have two VC (ViewController, SettingsVC, VC2).

How can I make it so that when you turn on the Switch(located in SettingsVC) when the application starts it would be shown VC2??

The default is ViewController.

Answer 1

Write this code in didFinishLaunchingWithOptions -

let isSwitchOn = UserDefaults.standard.bool(forKey: "isSwitchOn")
if isSwitchOn {
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let vc2 = storyboard.instantiateViewController(withIdentifier: "Your identifier")
self.window!.rootViewController = vc2;
}

Set isSwitchOn in SettingsVC like this -

UserDefaults.standard.set(true, forKey: "isSwitchOn")