如何快速显示一次UIVIewController

Question

我正在制作一个应用程序，并且只需要显示一次登机视图控制器，因此当用户重新进入该应用程序时，登机视图控制器将不再显示。

Answer 1

I guess the on boarding view controller is your initial view controller. Try this in app delegate

First put checkFunction() in didFinishLaunchingWithOptions then set the identity (eg. Home ) for the view controller you want to go

func checkFunction() {
    let acceptedTerms = UserDefaults.standard.string(forKey: "acceptedTerms")
    if acceptedTerms != nil && acceptedTerms == "Yes" {
        let storyBoard = UIStoryboard(name: "Main", bundle: nil)
        let VC = storyBoard.instantiateViewController(withIdentifier: "Home")
        self.window?.rootViewController = VC
    }
}

Second, modify UserDefaults.standard.string in somewhere

// example
@IBAction func acceptButtonTapped(_ sender: AnyObject) {
    UserDefaults.standard.set("Yes", forKey: "acceptedTerms")
    UserDefaults.standard.synchronize()
}