UISwipeGestureRecognizer not working after setting initial ViewController manually

Question

After i set my initial ViewController manually in the AppDelegate.swift my UISwipeGestureRecognizer is not working.

This is how my AppDelegate look like:

        self.mainNavigationController = UINavigationController()
        var mainController: UIViewController? = TineLineViewController()
        self.mainNavigationController!.pushViewController(mainController!, animated: true)
        self.window = UIWindow(frame: UIScreen.mainScreen().bounds)
        self.window!.rootViewController = mainController
        self.window!.makeKeyAndVisible()

and this is how my UISwipeGestureRecognizer is set in the initial ViewController:

        let postLeft : Selector = "postLeft:"
        let postLeftSwipe = UISwipeGestureRecognizer(target: self, action: postLeft)
        postLeftSwipe.direction = UISwipeGestureRecognizerDirection.Left
        goToPostButton.addGestureRecognizer(postLeftSwipe)

And this is my postLeft method which instantiate a new ViewController and navigate to it.

func postLeft(sender: AnyObject) {

        println("left swipe to push...")
        let secondViewController = PostCreateController()
    self.presentViewController(secondViewController, animated: true, completion: nil)

    }

When I swipe, the postLeft method was called, I can see the println left swipe to push, but the application doesn't changed the view.

Does anybody have any solution to solve this issue?

Thank you!

UPDATE:

i change my postLeft method. and by the console i see my new viewController class instantiates but it's not showing up.

Answer 1

I think you don't set your navigationController correctly,

try this instead of self.navigationController!.pushViewController

 let secondViewController = PostCreateController()
 self.presentViewController(secondViewController, animated: true, completion: nil)