How to pass data from child to parent view controller? in swift

Question

I created an activity where when one of the text fields clicked it will pop up a child(alert dialog) with list of product but when i click one item on the list I can\'t disp

Answer 1

There are few ways by which you can implement the callback functionality to pass data.

• Delegate
• Using Block CallBack
• Post Notification

But I would suggest to use delegate which is best way, Post Notification is also a way but I do not want to prefer.