SliverVisibility class

Whether to show or hide a sliver child.

By default, the visible property controls whether the sliver is included in the subtree or not; when it is not visible, the replacementSliver is included instead.

A variety of flags can be used to tweak exactly how the sliver is hidden. (Changing the flags dynamically is discouraged, as it can cause the sliver subtree to be rebuilt, with any state in the subtree being discarded. Typically, only the visible flag is changed dynamically.)

These widgets provide some of the facets of this one:

• SliverOpacity, which can stop its sliver child from being painted.
• SliverOffstage, which can stop its sliver child from being laid out or painted.
• TickerMode, which can stop its child from being animated.
• ExcludeSemantics, which can hide the child from accessibility tools.
• SliverIgnorePointer, which can disable touch interactions with the sliver child.

Using this widget is not necessary to hide children. The simplest way to hide a child is just to not include it. If a child must be given (e.g. because the parent is a StatelessWidget), then including a childless SliverToBoxAdapter instead of the child that would otherwise be included is typically more efficient than using SliverVisibility.

See also:

• Visibility, the equivalent widget for boxes.