springLoadingBehavior(_:)

Declaration

nonisolated func springLoadingBehavior(_ behavior: SpringLoadingBehavior) -> some TabContent<Self.TabValue>

Parameters

• behavior:

  Whether spring loading is enabled or not. If unspecified, the default behavior is .automatic.

Discussion

Spring loading refers to a view being activated during a drag and drop interaction. On iOS this can occur when pausing briefly on top of a view with dragged content. On macOS this can occur with similar brief pauses or on pressure-sensitive systems by “force clicking” during the drag. This has no effect on tvOS or watchOS.

This is commonly used with views that have a navigation or presentation effect, allowing the destination to be revealed without pausing the drag interaction. For example, a button that reveals a list of folders that a dragged item can be dropped onto.

Unlike disabled(_:), this modifier overrides the value set by an ancestor view rather than being unioned with it. For example, the tab below would allow spring loading:

TabView {
    Tab("Favorites", systemImage: "star") {
        MyFavoritesView()
    }
    .springLoadingBehavior(.enabled)

    ...
}
.springLoadingBehavior(.disabled)