tintColor not updating to default in Theme

I have a custom icon (.png image) as a barbutton and I'm going to be using a Theme.swift file to set asset colors/background color for 1 particular view controller but for some reason the tint color is not updating.

It's currently the dark grey color used when it was added to my Assets folder, but should show up as a green color as per my Theme.swift. Does anyone know of a reason why this might not be updating to the new default color of green:

In the viewDidLoad of the viewcontroller I'm looking to theme, I have added

Theme.current.apply()


And this is my Theme.swift file with a default green color:

import UIKit

enum Theme: Int
//1
case `default`, dark, graphical

//2
private enum Keys
static let selectedTheme = "SelectedTheme"


//3
static var current: Theme
let storedTheme = UserDefaults.standard.integer(forKey: Keys.selectedTheme)
return Theme(rawValue: storedTheme) ?? .default


var mainColor: UIColor
switch self
case .default:
print("/default")
return UIColor(red: 87.0/255.0, green: 188.0/255.0, blue: 95.0/255.0, alpha: 1.0)
case .dark:
return UIColor(red: 255.0/255.0, green: 115.0/255.0, blue: 50.0/255.0, alpha: 1.0)
case .graphical:
return UIColor(red: 10.0/255.0, green: 10.0/255.0, blue: 10.0/255.0, alpha: 1.0)




func apply()

//2
UIApplication.shared.delegate?.window??.tintColor = mainColor




/default even prints in my console, but the color does not update.

2 Answers
2

Here, problem with image renderingMode. If you want to apply tintColor on image you have to use image rendering mode as alwaysTemplate.

renderingMode

tintColor

alwaysTemplate

Image rendering mode can be set using two methods.

Programmatically

if let myImage = UIImage(named: "myImage")
let tintableImage = myImage.withRenderingMode(.alwaysTemplate)
imageView.image = tintableImage



From Asset

alwaysTemplate

tintColor

Theme

Try to change NavigationBar tint color

NavigationBar tint color

Sample code for change navigation bar tint color

UINavigationBar.appearance().tintColor = UIColor.purple //your selected color


Sample for your apply method please check it

func apply()

UIApplication.shared.delegate?.window??.tintColor = mainColor

// change navigation bar tint colour
UINavigationBar.appearance().tintColor = mainColor // or your selected color




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