[Force RTL in UIKit]

forceRTL-UIKit.swift

class AppDelegate: UIResponder, UIApplicationDelegate {
    func application(_ application: UIApplication,
                     didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {

        // Force all UIKit views to RTL
        UIView.appearance().semanticContentAttribute = .forceRightToLeft

        return true
    }
}