---
title: "tabBarController(_:didSelectTab:previousTab:)"
framework: uikit
role: symbol
role_heading: Instance Method
path: "uikit/uitabbarcontrollerdelegate/tabbarcontroller(_:didselecttab:previoustab:)"
---

# tabBarController(_:didSelectTab:previousTab:)

Tells the delegate that the user selected the specified @c selectedTab in the tab bar controller.

## Declaration

```swift
optional func tabBarController(_ tabBarController: UITabBarController, didSelectTab selectedTab: UITab, previousTab: UITab?)
```

## Discussion

Discussion This specified @c selectedTab is either a root tab or any of their descendants.