How to check which Tab Bar item is active?

I am tr开发者_JAVA百科ying to figure out how to check which tab bar button is active? Currently I have 5 to 6 different tab bar buttons, and want to check which one is active. Any input will be appreciated here.

Thanks,

Shawn

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do you have UITabbar or UITabbarController?

if UITabbar then set tag for each item and then you see which item is selected using -

tabBarController.tabBar.selectedItem.tag

if UITabbarController then use

tabBarController.selectedIndex

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UITabBarController has a selectedViewController and a selectedIndex property. Here is the UITabBarController documentation