# UIBarContainerBehavior Whether this navigation controller acts as a bar container, reading the bar content of its child view controller and rendering that content in the navigation controller’s own bar. ``` enum UIBarContainerBehavior ``` ## Overview For example, if there is a split view controller where one of the columns is a view controller with multiple child `UINavigationController`s, set `barContainerBehavior` to `.local` on all the children so that each one renders its own bar, instead of their toolbar content being rendered in a single toolbar managed by the split view controller. Defaults to `.automatic`. ## Topics ### Enumeration Cases [`case automatic`](/documentation/UIKit/UIBarContainerBehavior/automatic) The system decides whether this navigation controller renders the bar, or whether its bar content should be integrated into a single bar in a parent container view controller, like a split view controller. [`case local`](/documentation/UIKit/UIBarContainerBehavior/local) This navigation controller reads the bar content of its child view controllers and always renders a distinct, local bar. ### Initializers [`init?(rawValue: Int)`](/documentation/UIKit/UIBarContainerBehavior/init(rawValue:)) ## Relationships ### Conforms To [`SendableMetatype`](/documentation/Swift/SendableMetatype) [`RawRepresentable`](/documentation/Swift/RawRepresentable) [`Sendable`](/documentation/Swift/Sendable) [`Hashable`](/documentation/Swift/Hashable) [`Equatable`](/documentation/Swift/Equatable) [`BitwiseCopyable`](/documentation/Swift/BitwiseCopyable) --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)