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Updated 31 July 2019
With NotificationCenter you can broadcast data from one part of your app to another. In the iOS development process two entities will inevitably need to send and receive information and for this we here we will use NotificationCenter.
iOS notifications are a simple and powerful way to send data in a loosely coupled way. That is, the sender of notification doesn’t have to care about who (if anyone) receives the notification.
Here I’m using the NotificationCenter for sending data back from SecondViewController to FirstViewController.
-> Registering for notification in first view controller
-> Notification Action in first view controller
-> Posting Notification from second view controller on back button action
1-> NSNotification.Name(“Test”) is the struct identifying the specific notification by name.
2-> For the argument object, you can simply pass the object responsible for sending out notification
3-> userInfo is a payload which can be used to pass between sender and observer of notifications. It is a dictionary of type [AnyHashable : Any]
So pls follow the above step and And if you have any issue or suggestion you can leave your message in the comment section I will try to solve this.
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