ExpansionTileController class - material library (original) (raw)

Enables control over a single ExpansionTile's expanded/collapsed state.

It can be useful to expand or collapse an ExpansionTileprogrammatically, for example to reconfigure an existing expansion tile based on a system event. To do so, create an ExpansionTilewith an ExpansionTileController that's owned by a stateful widget or look up the tile's automatically created ExpansionTileControllerwith ExpansionTileController.of

The controller's expand and collapse methods cause the the ExpansionTile to rebuild, so they may not be called from a build method.

Constructors

ExpansionTileController()

Create a controller to be used with ExpansionTile.controller.

Properties

hashCode → int

The hash code for this object.

no setterinherited

isExpanded → bool

Whether the ExpansionTile built with this controller is in expanded state.

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setterinherited

Methods

collapse()→ void

Collapses the ExpansionTile that was built with this controller.

expand()→ void

Expands the ExpansionTile that was built with this controller;

noSuchMethod(Invocation invocation)→ dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString()→ String

A string representation of this object.

inherited

Operators

operator ==(Object other)→ bool

The equality operator.

inherited

Static Methods

maybeOf(BuildContext context)→ ExpansionTileController?

Finds the ExpansionTile from the closest instance of this class that encloses the given context and returns its ExpansionTileController.

of(BuildContext context)→ ExpansionTileController

Finds the ExpansionTileController for the closest ExpansionTile instance that encloses the given context.