改 let arrayNames = ，
便于调试。

func createViewControllers(){
     
let arrayNames = ["FairViewController","FindViewController","ChefViewController","HomePageViewController","ProfileViewController"]
   
       
//        let arrayNames = ["HomePageViewController","FindViewController","ChefViewController","FairViewController","ProfileViewController"]
       
       let names = ["首页","发现","主厨","市集","我"]
       
   
       
       var array = Array<UINavigationController>()
       
       
       for i in 0..<arrayNames.count{
       
           let controllerName = "deliciousOfCource." + arrayNames[i]
           
           let viewControllerClass = NSClassFromString(controllerName) as! UIViewController.Type
           
           let viewController = viewControllerClass.init()
           viewController.tabBarItem.title = names[i]
           viewController.tabBarItem.image = UIImage(named: "item_app_home")