ABAppearance

<img width="1280" alt="Frame 1" src="https://github.com/abuyakov/ABAppearance/assets/56303086/80208a23-4410-497f-aa67-b5b064ce7cf3">

About

I tried to create a project where you can globally change the appearance of the application (theme, color, icon). Perhaps someone was looking for such a solution.

Put a ⭐️ if I helped you, and write ideas on what can be done better.

Сapability

Themes

.unspecified The appearance the system used.

.light Permanent light appearance.

.dark Permanent dark appearance.

Colors

.red .pink .yellow .green .blue and colors that you like.

Icons

In my project, I added two alternative icons and one and the same default icon to display it in the table. You should add your icons not to assets, but as a file to the project. And add them to Info.plist and specify the names of these icons (see screenshot).

<img width="1075" alt="Screenshot 2023-08-25 at 18 06 10" src="https://github.com/abuyakov/ABAppearance/assets/56303086/55dc9731-bafc-4342-99b8-87d2eec69580">

Important

In SceneDelegate I specify self.window?.tintColor and self.window?.overrideUserInterfaceStyle values from UserDefaultsManager.

class SceneDelegate: UIResponder, UIWindowSceneDelegate {

    var window: UIWindow?

    func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
        let storyboard = UIStoryboard(name: "Settings", bundle: nil)
        let viewController = storyboard.instantiateViewController(withIdentifier: SettingsController.identifier)
        
        guard let sceneWindow = (scene as? UIWindowScene) else { return }
        self.window = UIWindow(windowScene: sceneWindow)
        self.window?.rootViewController = UINavigationController(rootViewController: viewController)
        self.window?.makeKeyAndVisible()
        self.window?.tintColor = UserDefaultsManager.shared.color.colorStyle
        self.window?.overrideUserInterfaceStyle = UserDefaultsManager.shared.theme.userInterfaceStyle
    }

}

In AppDelegate, I do a check for the first launch of the application and setting default values.

class AppDelegate: UIResponder, UIApplicationDelegate {

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        UserDefaultsManager.shared.setDefaultValuesIfNeeded()
        return true
    }

    func application(_ application: UIApplication, configurationForConnecting connectingSceneSession: UISceneSession, options: UIScene.ConnectionOptions) -> UISceneConfiguration {
        return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role)
    }
    
}

These are two functions for checking and setting default values in UserDefaultsManager.

class UserDefaultsManager {
    // ... (other code)

    func setDefaultValuesIfNeeded() {
        // Check if the app has been launched before (first launch)
        if !userDefaults.bool(forKey: Key.isFirstLaunch) {
            // Call the setDefaultValues() method to set default values
            setDefaultValues()
        }
    }
    
    private func setDefaultValues() {
        // Set the isFirstLaunch value to true
        userDefaults.set(true, forKey: Key.isFirstLaunch)
        // Set the autoTheme value to true (for automatic theme change)
        userDefaults.set(true, forKey: Key.autoTheme)
        // Set the selectedColor value to 7 (for example, representing blue color)
        userDefaults.set(7, forKey: Key.selectedColor)
        // Set the selectedIcon value to 0 (for example, representing the main icon)
        userDefaults.set(0, forKey: Key.selectedIcon)
    }
}