創建一個類與一個函數來配置視圖看 - swift

Question

我創建這個類來配置每個視圖控制器，以避免viewdidload（）內部的冗餘。

class Configuration: UIViewController { 

    func setNavigationTheme(#backgroundImage: String, dashboardImage: String) { 

     self.navigationController?.navigationBar.titleTextAttributes = [NSForegroundColorAttributeName: UIColor.whiteColor()] 
     self.navigationController?.navigationBar.setBackgroundImage(UIImage(named: dashboardImage), forBarMetrics: UIBarMetrics.Default) 
     self.navigationController?.navigationBar.tintColor = UIColor.whiteColor() 
     let bgImage: UIImage = UIImage(named: backgroundImage)! 
     self.view.backgroundColor = UIColor(patternImage: bgImage) 

    } 

} 

裏面viewDidLoad中（）

var configure = Configuration() 
configure.setNavigationTheme(backgroundImage: "Background", dashboardImage: "Dashboard") 

當我調用該函數，它不會改變任何東西，我是不是做錯了沒有？

Answer 1

你需要擴展你的視圖控制器與你的配置類。

class MyViewController: Configuration { 

    override func viewDidLoad() { 
     //Don't initialize new Configuration class. 
     setNavigationTheme(backgroundImage: "Background", dashboardImage: "Dashboard") 

    } 
} 

您的配置類：

class Configuration: UITableViewController { 

    func setNavigationTheme(#backgroundImage: String, dashboardImage: String) { 

     self.navigationController?.navigationBar.titleTextAttributes = [NSForegroundColorAttributeName: UIColor.whiteColor()] 
     self.navigationController?.navigationBar.setBackgroundImage(UIImage(named: dashboardImage), forBarMetrics: UIBarMetrics.Default) 
     self.navigationController?.navigationBar.tintColor = UIColor.whiteColor() 
     let bgImage: UIImage = UIImage(named: backgroundImage)! 
     self.view.backgroundColor = UIColor(patternImage: bgImage) 

    } 

}