How to Color/Customize the Uiimagepickercontroller's Navigation Bar

UIImagePickerController Navigation Bar Tint Color not working with iOS 13

This was resolved with rmaddy's solution in the comments.

in AppDelegate implement;

func configureGlobalUI() {
    UINavigationBar.appearance().tintColor = .red
}

then call in didFinishLaunchingWithOptions

This works as I require the tintColor on all navigationBar appearances.

How can I change UIImagePickerController navigation bar font?

This is how you do it:

picker.navigationBar.titleTextAttributes =
    [NSForegroundColorAttributeName: UIColor.redColor(),
        NSFontAttributeName: UIFont.init(name: "Helvetica", size: 21)!]

Also, a small problem with your code: UIImagePickerController derived from UINavigationController, and picker.navigationController? is always nil in your code above.

Change UIImagePicker Navigation Bar style to blue

I think there is no way to change it. So my solution is using Color Meter to get the color of the default navigation bar in color code: red code, blue code, green code. Then I use the method

imagePicker.navigationBar.tintColor = [UIColor colorWithRed:redCode green:greenCode blue:blueCode alpha:0.1];

UINavigationBar tintColor

UIColor Reference

Change TintColor of UIImagePickerController

After you change window?.tintColor, inputAccessoryView.tintColor isn't changed because inputAccessoryView isn't a subview of current window (they don't have same view’s hierarchy) so window.tintColor won't affect inputAccessoryView.

To resolve problem, I suggest to use NotificationCenter to observe and change window.tintColor each time a new UIWindow becomes visible. You can put the code inside AppDelegate

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
  // Override point for customization after application launch.
  NotificationCenter.default.addObserver(self, selector: #selector(self.windowDidBecomeVisible), name: .UIWindowDidBecomeVisible, object: nil)
  return true
}

@objc func windowDidBecomeVisible(notification: NSNotification) {
  // Each time an `UIWindow` becomes visible, change its |tintColor|
  let visibleWindow = notification.object as! UIWindow
  visibleWindow.tintColor = .red
}

If you want to change tintColor only for the UIImagePickerController, you need to change tintColor for every view which is displayed on UIImagePickerController.

1. Define an extension to change all subview's tintColor.

   extension UIView {
     func changeTintColor(color: UIColor) -> Void {
       for view in subviews{
         view.tintColor = color
         view.changeTintColor(color: color);
       }
     }
   }
   

2. Use UINavigationControllerDelegate to get UIViewController which is displayed on UIImagePickerView. Change view's tintColor inside this controller

   func navigationController(_ navigationController: UINavigationController, willShow viewController: UIViewController, animated: Bool) {
     viewController.view.changeTintColor(color: .red)
   }
   

3. Don't forget to set UIImagePickerController's delegate to self.

Incorrect navigation bar colour in limited library picker on iOS 15

The way to get completely control over a navigation bar's color is to use a background image. Make an image renderer. Fill the context with solid red and extract the image from the renderer. Call setBackgroundImage on the appearance proxy.

I don't have time to translate the code from Swift to Objective-C so I leave it up to you:

    let rend = UIGraphicsImageRenderer(size:.init(width:100, height:100))
    let im = rend.image {
        con in
        UIColor.red.setFill()
        con.fill(.init(x: 0, y: 0, width: 100, height: 100))
    }
    UINavigationBar.appearance().setBackgroundImage(im, for: .default)

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