How to perform Unwind segue programmatically

Question

Using storyboard this is very easy  You just drag the action to  Exit   But how should I call it from my code

User · Answer

Backwards compatible solution that will work for versions prior to ios6  for those interested   -  void unwindToViewControllerOfClass  Class vcClass animated  BOOL animated        for  int i self navigationController viewControllers count - 1  i  gt   0  i--            UIViewController  vc    self navigationController viewControllers objectAtIndex i           if   vc isKindOfClass vcClass                  self navigationController popToViewController vc animated animated               return

User · Answer

bradleygriffith s answer was great  I took step 10 and made a screenshot for simplification  This is a screenshot in Xcode 6    Control-drag from the orange icon to the red Exit icon to create an unwind without any actions buttons in the view       Then select the unwind segue in the sidebar       Set a Segue Identifier string       Access that identifier from code     self performSegueWithIdentifier   unwindIdentifier  sender self

User · Answer

Quoting text from Apple s Technical Note on Unwind Segue  To add an unwind segue that will only be triggered programmatically  control drag from the scene s view controller icon to its exit icon  then select an unwind action for the new segue from the popup menu   Link to Technical Note

User · Answer

Here s a complete answer with Objective C and Swift   1  Create an IBAction unwind segue in your destination view controller  where you want to segue to   Anywhere in the implementation file      Objective C      -  IBAction unwindToContainerVC  UIStoryboardSegue   segue              Swift    IBAction func unwindToContainerVC segue  UIStoryboardSegue             2  On the source view controller  the controller you re segueing from       drag from  Name of activity  to exit  You should see the unwind segue created in step 1 in the popup   If you don t see it  review step one   Pick unwindToContainerVC  from the popup  or whatever you named your method to connect your source controller to the unwind IBAction     3  Select the segue in the source view controller s document outline of the storyboard  it will be listed near the bottom   and give it an identifier      4  Call the unwind segue using this method from source view controller  substituting your unwind segue name      Objective C   self performSegueWithIdentifier   unwindToContainerVC  sender self       Swift  self performSegueWithIdentifier  unwindToContainerVC   sender  self   NB  Use the sourceViewController property of the segue parameter on the unwind method to access any exposed properties on the source controller  Also  notice that the framework handles dismissing the source controller  If you d like to confirm this add a dealloc method to the source controller with a log message that should fire once it has been killed  If dealloc doesn t fire you may have a retain cycle

User · Answer

SWIFT 4   1  Create an  IBAction with segue inside controller you want to unwind to        IBAction func unwindToVC segue  UIStoryboardSegue             2  In the storyboard  from the controller you want to segue  unwind  from ctrl drag from the controller sign to exit sign and choose method you created earlier     3  Now you can notice that in document outline you have new line with title  Unwind segue       Now you should click on this line and open attribute inspector to set identifier  in my case unwindSegueIdentifier      4  You re almost done  Now you need to open view controller you wish to unwind from and create some method that will perform segue  For example you can add button  connect it with code with  IBAction  after that inside this IBAction add perfromSegue withIdentifier sender   method         IBAction func unwindToSomeVCWithSegue   sender  UIButton             performSegue withIdentifier   unwindSegueIdentifier   sender  nil           So that is all you have to do

User · Answer

Vishal Chaudhry s answer above worked for me  I would also add that in order to manually trigger the seque using     self performSegueWithIdentifier   mySegueName  sender self     from within the ViewController you must also select the unwind segue under the ViewController s Scene in the storyboard and in the properties view on the RHS ensure that the Indentifier field contains the namer you re referring to in the code   mySegueName  in the example above    If you omit this step  the line above will throw an exception that the seque name is not known

User · Answer

Create a manual segue  ctrl-drag from File   s Owner to Exit   Choose it in the Left Controller Menu below green EXIT button      Insert Name of Segue to unwind   Then -  void performSegueWithIdentifier  NSString   identifier sender  id sender  with your segue identify

User · Answer

I used  self dismissViewControllerAnimated  YES completion  nil   which will return you to the calling ViewController

User · Answer

Swift 4 2  Xcode 10   For those wondering how to do this with VCs not set up via the storyboard  those coming to this question from searching  programmatically     unwind segue     Given that you cannot set up an unwind segue programatically  the simplest solely programmatic solution is to call   navigationController  popToRootViewController animated  true   which will pop all view controllers on the stack back to your root view controller     To pop just the topmost view controller from the navigation stack  use   navigationController  popViewController animated  true

User · Answer

FYI  In order for  Vadim s answer to work with a manual unwind seque action called from within a View Controller you must place the command    self performSegueWithIdentifier  NSString   identifier sender  id  sender     inside of the overriden class method viewDidAppear like so   - void  viewDidAppear  BOOL  animated        super viewDidAppear  animated         self performSegueWithIdentifier   SomeSegueIdentifier  sender self       If you put it in other ViewController methods like viewDidLoad or viewWillAppear it will be ignored

[ios] How to perform Unwind segue programmatically?

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