CODEWITHSUNDEEP
iosswiftsegue
theloneswiftman
theloneswiftman

Reputation: 188

Swift perform segue without clicking button

I'm making a small game in SpriteKit where I have a bool value stored that checks if it's the first time the user plays my game. If it is, I want the app to redirect him to another viewcontroller where he enters his character-name.

However, I'm having trouble getting my app to do so.

In my "GameViewController.swift" I have this code:

override func viewDidLoad() {
    super.viewDidLoad()

    checkGame()

    if let view = self.view as! SKView? {

        // Load the SKScene from 'GameScene.sks'
        if let scene = SKScene(fileNamed: "GameScene") {
            // Set the scale mode to scale to fit the window
            scene.scaleMode = .aspectFill

            // Present the scene
            view.presentScene(scene)
        }

        view.ignoresSiblingOrder = true

        view.showsFPS = true
        view.showsNodeCount = true
    }
}

func checkGame() {
    //Check game
    let firstPlay:Bool = appData.bool(forKey: "\(GameData.firstPlay)")
    print(firstPlay)

    if firstPlay == false {
        print("Heading for setup")
        self.performSegue(withIdentifier: "GoToSetup", sender: nil)
    }
}

However, the "setup viewcontroller" isn't loaded. I can manage to tricker the segue with a button-click, but that's not what I want. I want it to happen as soon as the view is loaded.

Any ideas?

Upvotes: 0

Views: 1631

Answers (3)

D. Pass
D. Pass

Reputation: 83

As it was said, in viewDidLoad stage UIViewController can't be done any UI-interaction, and performSegue to, because view is not at the view hierarchy yet. You can do this at viewDidAppear(animated:Bool).

Upvotes: -1

Sweeper
Sweeper

Reputation: 271355

I don't know what you meant by "setup viewcontroller" isn't loaded", but usually we don't perform segues in the viewDidLoad. At this time, the view has just been loaded into memory and has not appeared yet. Performing a segue at this time is kind of a weird thing to do.

I recommend you to perform the segue in viewDidAppear():

 override func viewDidAppear(animated: Bool)  {
    super.viewDidAppear(animated: animated)
    performSegue(withIdentifier: "GoToSetup", sender: nil)
}

Upvotes: 3

Tony
Tony

Reputation: 3068

You can programmatically call a segue with the following:

 self.performSegueWithIdentifier("segueId", sender: self);

Upvotes: 1

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