Swift-Let the tab bar button uitabbaritem the picture centered (no text) _ Use

Source: Internet
Author: User
For the tab bar (Uitabbar), when the Tabbaritem does not need title as long as the image, the image below will occupy a space.
We can set the offset by tabbaritem.imageinsets so that the image icon is centered.
(Note: Top and bottom are set to the opposite number, otherwise the image size will change.) )
1 2 3 4 5 6 7 8 9 (import ) uikit   class  Maintabviewcontro (+) Ller:uitabbarcontroller {     override  func  viewdidload ()      {          super. Viewdidload ()          //altogether contains two views          let  Qqview =  Qqviewcontroller ()         //qqview.title = ""           let  Skypeview =  skypeviewcontroller ()         // Skypeview.title = ""                    //Declaration of two view controllers          let  QQ =  Uinavigationcontroller (Rootviewcontroller:qqview)          qq.tAbbaritem.image =  UIImage (named: "QQ")          Qq.tabBarItem.imageInsets =  Uiedgeinsetsmake (6, 0,-6, 0);                    Let   Skype =  uinavigationcontroller (rootviewcontroller:skypeview)           skype.tabBarItem.image =  uiimage (named: "Skype")           Skype.tabBarItem.imageInsets =  uiedgeinsetsmake (6, 0,-6, 0);                    Self. Viewcontrollers = [Qq,skype]     }}

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