How to dismiss ViewController in Swift

Question

I am trying to dismiss a ViewController in swift by calling dismissViewController in an IBAction     IBAction func cancel sender  AnyObject        self dismissViewControllerAnimated false  completion  nil      println  cancel       IBAction func done sender  AnyObject        self dismissViewControllerAnimated false  completion  nil      println  done         I could see the println message in console output but ViewController never gets dismissed  What could be the problem

User · Answer

Here is the one way to dismiss present view controller and move back to previous view controller. You can do this through Storyboard only.

Open Storyboard
Right click on Cancel button and drag it to previous view controller, where you want to move back to previous controller
Now release the right click and you can see some actions which performs on cancel button
Now choose "popover present" option from list
Now you can dismiss your current view by click on cancel button

Please try this, It's working with me.

Second Way - Use - navigationController.popViewControllerAnimated(true)

Best luck..

User · Answer

If you are presenting a ViewController modally  and want to go back to the root ViewController  take care to dismiss this modally presented ViewController before you go back to the root ViewController otherwise this ViewController will not be removed from Memory and cause Memory leaks

User · Answer

Use   self dismiss animated  true  completion  nil    instead of   self navigationController dismissViewControllerAnimated true  completion  nil

User · Answer

In Swift 3 0 to 4 0 it s as easy as typing this into your function   self dismiss animated  true  completion  nil    Or if you re in a navigation controller you can  pop  it   self navigationController  popViewController animated  true

User · Answer

Don t create any segue from Cancel or Done to other VC and only write this code your buttons  IBAction   IBAction func cancel sender  AnyObject        dismiss animated  false  completion  nil

User · Answer

IBAction func back   sender  Any            self dismiss animated  false  completion  nil

User · Answer

If you presenting a controller without a Navigation Controller  you can call the following code from a method of the presented controller   self presentingViewController  dismiss animated  true  completion  nil    If your ViewController is presented modally  optional presentingViewController will be not nil and the code will be executed

User · Answer

I have a solution for your problem  Please try this code to dismiss the view controller if you present the view using modal   Swift 3   self dismiss animated  true  completion  nil    OR  If you present the view using  push  segue  self navigationController  popViewController animated  true

User · Answer

Based on my experience  I add a method to dismiss me as extension to UIViewController   extension UIViewController       func dismissMe animated  Bool  completion     - gt                 var count   0         if let c   self navigationController  viewControllers count               count   c                   if count  gt  1               self navigationController  popViewController animated  animated              if let handler   completion                   handler                           else               dismiss animated  animated  completion  completion                      Then I call this method to dismiss view controller in any UIViewController subclass  For example  in cancel action   class MyViewController  UIViewController              IBAction func cancel sender  AnyObject         dismissMe animated  true  completion  nil

User · Answer

So if you wanna dismiss your Viewcontroller use this  This code is written in button action to dismiss VC    IBAction func cancel sender  AnyObject       dismiss animated  true  completion  nil

User · Answer

In Swift 3 0  If you want to dismiss a presented view controller  self dismiss animated  true  completion  nil

User · Answer

From Apple documentations      The presenting view controller is responsible for dismissing the view controller it presented   Thus  it is a bad practise to just invoke the dismiss method from it self   What you should do if you re presenting it modal is   presentingViewController  dismiss animated  true  completion  nil

User · Answer

In Swift 4 1 and Xcode 9 4 1  If you use pushViewController to present new view controller  use this  self navigationController  popViewController animated  false

User · Answer

If you using the present method in the parent VC then you should call this function  to dismiss the child VC use this  self dismiss animated  true  completion  nil    if you calling child VC by using push method  to dismiss the child VC use this  self navigationController  popViewController animated  true

User · Answer

Try this    IBAction func close       dismiss animated  true  completion  nil

User · Answer

From you image it seems like you presented the ViewController using push  The dismissViewControllerAnimated is used to close ViewControllers that presented using modal  Swift 2  navigationController popViewControllerAnimated true    Swift 4  navigationController  popViewController animated  true   dismiss animated  true  completion  nil

User · Answer

Since you used push presented viewController  therefore  you can use self dismiss animated  false  completion  nil

User · Answer

if you do this i guess you might not get println message in console    IBAction func cancel sender  AnyObject      if self presentingViewController       self dismissViewControllerAnimated false  completion  nil      println  cancel            IBAction func done sender  AnyObject      if self presentingViewController       self dismissViewControllerAnimated false  completion  nil      println  done

User · Answer

embed the View you want to dismiss in a NavigationController add a BarButton with  Done  as Identifier invoke the Assistant Editor with the Done button selected create an IBAction for this button add this line into the brackets   self dismissViewControllerAnimated true  completion  nil

User · Answer

For reference  be aware that you might be dismissing the wrong view controller  For example  if you have an alert box or modal showing on top of another modal   You could have a Twitter post alert showing on top of your current modal alert  for example   In this case  you need to call dismiss twice  or use an unwind segue

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