swift: setting back button image in nav bar
In Swift 3.0 + put below code in appdelegate
didFinishLaunchingWithOptions
method, it will work perfectly
let backImage = UIImage(named: "BackNavigation")?.withRenderingMode(.alwaysOriginal)
UINavigationBar.appearance().backIndicatorImage = backImage
UINavigationBar.appearance().backIndicatorTransitionMaskImage = backImage
UIBarButtonItem.appearance().setBackButtonTitlePositionAdjustment(UIOffsetMake(0, -80.0), for: .default)
Or for Swift 4.0 +
let backImage = UIImage(named: "back-icon").withRenderingMode(.alwaysOriginal)
UINavigationBar.appearance().backIndicatorImage = backImage
UINavigationBar.appearance().backIndicatorTransitionMaskImage = backImage
UIBarButtonItem.appearance().setBackButtonTitlePositionAdjustment(UIOffset(horizontal: 0, vertical: -80.0), for: .default)
The last line will remove the title of Navigation Back Button
if you don't want to remove title then just remove last line
self.navigationController?.navigationBar.backIndicatorImage = UIImage(named: "back-icon")
self.navigationController?.navigationBar.backIndicatorTransitionMaskImage = UIImage(named: "back-icon")
I have figured out by looking into sample code. 1) Create a bar button item in storyboard. 2) Link that button to controller using IBOutlet 3) Add image to the button
var backImg: UIImage = UIImage(named: "back_btn")
backBtn.setBackgroundImage(backImg, forState: .Normal, barMetrics: .Default)
PS: image should be added to Images.xcassets folder, see sample code, UICatalog , for details.
If you want to change the back button in every controller you can add this to app delegate in didFinishLaunchingWithOptions
let backImg: UIImage = UIImage(named: "back_button")!
UIBarButtonItem.appearance().setBackButtonBackgroundImage(backImg, forState: .Normal, barMetrics: .Default)