How to customize a view controller’s back button on a navigation bar: backBarButtonItem
About 2 min
How to customize a view controller’s back button on a navigation bar: backBarButtonItem 관련
UIKit - free Swift example code
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How to customize a view controller’s back button on a navigation bar: backBarButtonItem | UIKit - free Swift example code
How to customize a view controller’s back button on a navigation bar: backBarButtonItem
Available from iOS 2.0
