ios - Unwind segue from navigation back button in Swift -


i have settings screen, in have table cell. clicking on take screen user can choose option , want in previous view controller when button pressed.

enter image description hereenter image description here

i can put custom bar button item, want return parent view controller using button in navigation bar rather custom button on view.

i dont seem able override navigation button point down unwind segue action , since button doesnt appear on storyboard, cant drag green exit button it

is possible unwind push segue button?

i achieved trying do, i.e., pass data in navigation controller stack using delegate method:

http://makeapppie.com/2014/07/05/using-delegates-and-segues-part-2-the-pizza-demo-app/


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