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Manage UIBarButton in iOS
Parameter
title style target action
Description
The UIBarButtonItem title
The style of the UIBarButtonItem
The object to receive the UIBarButtonItem action
The selector (method) to be performed when the UIBarButtonItem is pressed
Creating a UIBarButtonItem in the Interface Builder
The example below shows how to add a navigation bar button (called a UIBarButtonItem) in the Interface Builder. Add a Navigation Controller to your Storyboard
Select your View Controller and then in the Xcode menu choose Editor > Embed In > Navigation Controller.
Alternatively, you could add a UINavigationBar from the Object Library.
Add a Bar Button Item
Drag a UIBarButtonItem from the Object Library to the top navigation bar.
It should look like this: