How to change background image of tab bar item in ios?

Question

I want to change the background of tab bar item with some image . Can anyone help me out in this regard?

Here is what i wanted :

Also i need to know what should be the size of background image . My images are getting out of bound

Answer 1

To change background colour of UITabBar

TabBarController* Tcontroller =(TabBarController*)self.window.rootViewController;
Tcontroller.tabBar.barTintColor=[UIColor greenColor];

Answer 2

您应该根据自己的数量计算您的tabbaritem的图像大小，例如，如果您有4个标签项：每个项目的宽度将是屏幕宽度的1/4，高度是平板电脑高度。