Appearance Proxies

AppearanceProxies-Swift4-iOS11

    func appearances() {
        let windows = UIApplication.shared.windows
        for window in windows {
            for view in window.subviews {
                view.removeFromSuperview()
                window.addSubview(view)
            }
        }
        
        setupProxies()
    }
    
    func setupProxies() {
        /// 1. Navigation Bars
        UINavigationBar.appearance().titleTextAttributes = [
            NSAttributedStringKey.font: Fonts.sharedFonts.navBarTitleFont
        ]
        if #available(iOS 11.0, *) {
            UINavigationBar.appearance().largeTitleTextAttributes = [
                NSAttributedStringKey.font : Fonts.sharedFonts.navBarLargeTitleFont
            ]
        }
        
        /// 2. Search Bars
        
        // A. Search Bar Text Field
        (UITextField.appearance(whenContainedInInstancesOf: [UISearchBar.self])).defaultTextAttributes = [
            NSAttributedStringKey.font.rawValue : Fonts.sharedFonts.segmentedControlFont
            ] as [String : Any]
        
        // B. Search Bar Scope Buttons
        UISearchBar.appearance().setScopeBarButtonTitleTextAttributes([
            NSAttributedStringKey.font.rawValue : Fonts.sharedFonts.segmentedControlFont
            ]
            , for: .normal)
        
        
        /// 3. Bar Buttons Items
        UIBarButtonItem.appearance().setTitleTextAttributes([
                NSAttributedStringKey.font: Fonts.sharedFonts.navBarTitleFont
            ]
            , for: .normal)
        
        /// 4. Segmented Controls
        UISegmentedControl.appearance().setTitleTextAttributes([
            NSAttributedStringKey.font : Fonts.sharedFonts.segmentedControlFont
            ]
            , for: .normal)
    }