迅速：在導航欄標題的字體

Question

在AppDelegate.swift我有以下代碼：

let nav1 = UINavigationController() 
    let mainView = ViewController(nibName: nil, bundle: nil) //ViewController = Name of your controller 
    nav1.viewControllers = [mainView] 
nav1.navigationBar.topItem?.title = "JT" 
    nav1.navigationController?.navigationBar.titleTextAttributes = [ NSFontAttributeName: UIFont(name: "AvenirNext-UltraLight", size: 24)!, NSForegroundColorAttributeName: UIColor.whiteColor()] 

但最後一行沒有改變導航欄 的標題字體我應該怎麼辦？

Answer 1

您可以通過改變故事板導航欄標題屬性或試試這個：

nav1.navigationBar.titleTextAttributes = [NSFontAttributeName: UIFont(name: "AvenirNext-UltraLight", size: 24)!, NSForegroundColorAttributeName: UIColor.whiteColor()] 

Answer 2

您可以創建自己的titleview的是這樣的：

let label=UILabel(frame: nav1.navigationBar.frame) 
    label.textAlignment=NSTextAlignment.Center 
    label.font=UIFont(name: "FONT HERE", size: 27) 
    label.text="TITLE HERE" 
    label.textColor=UIColor.blackColor() 
    for item in nav1.navigationBar.items!{ 
     item.titleView=label 
    }