---
title: UITabBarController.MinimizeBehavior.onScrollDown
framework: uikit
role: symbol
role_heading: Case
path: uikit/uitabbarcontroller/minimizebehavior/onscrolldown
---

# UITabBarController.MinimizeBehavior.onScrollDown

The tab bar minimizes when scrolling down, and expands when scrolling back up.

## Declaration

```swift
case onScrollDown
```