Passing Data to Previous ViewController by dismissing Present ViewController

Asked Feb 14 '19 at 06:56

Active Feb 14 '19 at 10:36

Viewed 80 times

I have 2 ViewControllers

ViewControllerA,
ViewControllerB

ViewControllerB is to show popUpView and another is my mainViewController.
When I press cancel button in popUpView I dismiss the present ViewController (i.e ViewControllerB) and try to pass some data to ViewControllerA.
I tried to print value in viewWillAppear() function of ViewControllerA but after dismiss I am not receiving any data from ViewControllerB.

Can anyone help me out how to solve this?

edited Feb 14 '19 at 10:36

Krzysztof Janiszewski

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asked Feb 14 '19 at 06:56

Naresh

2

Please add the code you have tried to pass the data. – Anshul Bhatheja Feb 14 '19 at 07:03
1

You can use block method, delegate, NotificationCenter to pass data from ViewController B to ViewController A. – Kuldeep Feb 14 '19 at 07:18
@IBAction func cancelAction(_ sender: Any) { if let presenter = presentingViewController as? MGM_Selection{ presenter.flag = 1 presenter.viewWillAppear(true) } self.dismiss(animated: true, completion: nil) } – Naresh Feb 14 '19 at 07:19
ok i will try with delegate – Naresh Feb 14 '19 at 07:20
delegate solved my problem thanks – Naresh Feb 14 '19 at 10:09
Possible duplicate of [Passing Data between View Controllers](https://stackoverflow.com/questions/5210535/passing-data-between-view-controllers) – Hamed Feb 14 '19 at 10:39
An unwind (exit) segue is also a mechanism designed for this scenario. – Alladinian Feb 14 '19 at 13:31

Passing Data to Previous ViewController by dismissing Present ViewController

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