preferredVerticalBarBehavior
The vertical bar behavior that this view controller prefers.
Declaration
var preferredVerticalBarBehavior: UIVerticalBarBehavior { get }Discussion
Override this property to opt out of the vertical bar. Return UIVerticalBarBehaviorDisabled to hide the vertical bar. Defaults to UIVerticalBarBehaviorAutomatic.
Disable the vertical bar only for UIs that are better served by horizontal bars, such as a fullscreen video player with toolbar controls or a non-scrolling layout like a calculator. Treat it as a stable choice: avoid changing it frequently as the user navigates, and don’t toggle it for a single view controller as a function of that view’s state. To hide the bars and status bar on a given screen rather than change the layout, use the visibility APIs instead.
When the resolved configuration changes, the system animates the transition: content reflows to or from the horizontal bars while the status bar changes axis and the leading or trailing safe area inset for the vertical bar is added or removed.