How to dismiss VIewController iOS Swift

问题

I am new to iOS development. I am developing an application using iOS Swift. I have 3 view controllers viewController1, viewController2, viewController3. When I click from viewController1 its move to viewController2. By using the following code

let storyboard = UIStoryboard(name: "Main", bundle: nil)
        let secondViewController = storyboard.instantiateViewControllerWithIdentifier("viewController2")
        presentViewController(secondViewController, animated: false, completion: nil)

Now I am moving from viewController2 to viewController3 by using the following code

performSegueWithIdentifier("viewController3", sender: scoreColorArray);

It's all fine. Now I want to back from viewController3 to viewController1. My problem it is not going to viewController1 it is going to viewController2. I know the reason viewController2 not dismissed.

I want to dismiss the current view controller and start new one. How can I do it? I know there is some ways to do it, please someone help me to finds the issue.

回答1:

Since your presentation sequence is VC1 -> VC2 -> VC3 you need to call self.presentingViewController?.presentingViewController?.dismissViewControllerA‌​animated on VC3, traversing this way your sequence in reverse.

回答2:

You can achieve it by using delegate.

• You send delegate call from controller 2 to controller 1 for dismiss controller 2.
• After dismiss success, you will push controller 3 from controller 1

You can look my demo for this case: Demo Pushview

来源：https://stackoverflow.com/questions/34197729/how-to-dismiss-viewcontroller-ios-swift