bottom accessory view
Asked on 06/11/2025
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The concept of a "bottom accessory view" is discussed in the context of building apps with the new design in both UIKit and SwiftUI.
In UIKit, to set a bottom accessory, you create a UITabAccessory with your content view and then set the bottom accessory property on the UITabBarController. This allows the accessory view to be displayed above the tab bar, and it can animate to display in line with the tab bar when minimized. This is covered in the session Build a UIKit app with the new design.
In SwiftUI, you can place a view above the bar with the TabView bottom accessory modifier. This takes advantage of the extra space provided by the tab bar's collapsing behavior. You can read the Tab View button accessory placement from the environment and adjust the content of your accessory when it collapses into the Tab bar area. This is discussed in the session Build a SwiftUI app with the new design.
These sessions provide insights into how to implement and manage bottom accessory views in your app's design.
Build a UIKit app with the new design
Update your UIKit app to take full advantage of the new design system. We’ll dive into key changes to tab views, split views, bars, presentations, search, and controls, and show you how to use Liquid Glass in your custom UI. To get the most out of this video, we recommend first watching “Get to know the new design system” for general design guidance.
Build a SwiftUI app with the new design
Explore the ways Liquid Glass transforms the look and feel of your app. Discover how this stunning new material enhances toolbars, controls, and app structures across platforms, providing delightful interactions and seamlessly integrating your app with the system. Learn how to adopt new APIs that can help you make the most of Liquid Glass.
Build an AppKit app with the new design
Update your AppKit app to take full advantage of the new design system. We’ll dive into key changes to tab views, split views, bars, presentations, search, and controls, and show you how to use Liquid Glass in your custom UI. To get the most out of this video, we recommend first watching “Get to know the new design system” for general design guidance.