ExpandableBottomSheet class

ExpandableBottomSheet is a BottomSheet with a draggable height like the Google Maps App on Android.

Example:

ExpandableBottomSheet(
  background: Container(
    color: Colors.red,
    child: Center(
      child: Text('Background'),
    ),
  ),
  persistentHeader: Container(
    height: 40,
    color: Colors.blue,
    child: Center(
      child: Text('Header'),
    ),
  ),
  expandableContent: Container(
    height: 500,
    color: Colors.green,
    child: Center(
      child: Text('Content'),
    ),
  ),
);
Inheritance

Constructors

ExpandableBottomSheet({Key? key, required Widget expandableContent, required Widget background, Widget? persistentHeader, Widget? persistentFooter, double persistentContentHeight = 0.0, Curve animationCurveExpand = Curves.ease, Curve animationCurveContract = Curves.ease, Duration animationDurationExtend = const Duration(milliseconds: 250), Duration animationDurationContract = const Duration(milliseconds: 250), dynamic onIsExtendedCallback()?, dynamic onIsContractedCallback()?, bool enableToggle = false})
Creates the ExpandableBottomSheet.
const

Properties

animationCurveContract → Curve
animationCurveContract is the curve of the animation for contracting the expandableContent if the drag ended with high speed.
final
animationCurveExpand → Curve
animationCurveExpand is the curve of the animation for expanding the expandableContent if the drag ended with high speed.
final
animationDurationContract → Duration
animationDurationContract is the duration for the animation to bottom if you stop dragging with high speed. If it is null animationDurationExtend will be used.
final
animationDurationExtend → Duration
animationDurationExtend is the duration for the animation if you stop dragging with high speed.
final
background → Widget
background is the widget behind the expandableContent which holds usually the content of your page. It is required for the ExpandableBottomSheet.
final
enableToggle → bool
enableToggle will enable tap to toggle option on header.
final
expandableContent → Widget
expandableContent is the widget which you can hide and show by dragging. It has to be a widget with a constant height. It is required for the ExpandableBottomSheet.
final
hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
onIsContractedCallback → (dynamic Function()?)
onIsContractedCallback will be executed if the extend reaches its minimum.
final
onIsExtendedCallback → (dynamic Function()?)
onIsExtendedCallback will be executed if the extend reaches its maximum.
final
persistentContentHeight → double
persistentContentHeight is the height of the content which will never been contracted. It only relates to expandableContent. persistentHeader and persistentFooter will not be affected by this.
final
persistentFooter → Widget?
persistentFooter is a widget which is always shown at the bottom. The expandableContent is if it is expanded on top of it so you don't need margin to see all of your content. You can use it for example for navigation or a menu.
final
persistentHeader → Widget?
persistentHeader is a Widget which is on top of the expandableContent and will never be hidden. It is made for a widget which indicates the user he can expand the content by dragging.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → ExpandableBottomSheetState
Creates the mutable state for this widget at a given location in the tree.
override
debugDescribeChildren() → List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children.
inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode
Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.
inherited
toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) → String
A string representation of this object.
inherited
toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String
Returns a string representation of this node and its descendants.
inherited
toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String
Returns a one-line detailed description of the object.
inherited
toStringShort() → String
A short, textual description of this widget.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited