TabBarItem徽章價值未顯示

Question

我寫了這段代碼，但它似乎不工作，我不知道爲什麼，TabBarItem是正確的，但徽章沒有顯示。

let mainStoryboard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil) 
let tabBarController = mainStoryboard.instantiateViewControllerWithIdentifier("TabBar") as! UITabBarController 
let tabArray = tabBarController.tabBar.items as NSArray! 
var chatItem = tabArray.objectAtIndex(3) as! UITabBarItem 
chatItem.badgeValue = "1" 

Answer 1

你必須重新加載tabBarController當你更新值，所以不喜歡：

let tabBarController = self.storyboard?.instantiateViewControllerWithIdentifier("TabBar") as! TabsViewController // Your tabor controller 
tabBarController.selectedIndex = 2 // Whatever your selected index 

let tabArray = tabBarController.tabBar.items as NSArray! 
let chatItem = tabArray.objectAtIndex(3) as! UITabBarItem 
chatItem.badgeValue = "1" 
var appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate 
appDelegate.window?.rootViewController = tabBarController