BottomNavigationBarTheme class Null safety

Applies a bottom navigation bar theme to descendant BottomNavigationBar widgets.

Descendant widgets obtain the current theme's BottomNavigationBarTheme object using BottomNavigationBarTheme.of. When a widget uses BottomNavigationBarTheme.of, it is automatically rebuilt if the theme later changes.

A bottom navigation theme can be specified as part of the overall Material theme using ThemeData.bottomNavigationBarTheme.

Constructors

BottomNavigationBarTheme({Key? key, required BottomNavigationBarThemeData data, required Widget child}): Constructs a bottom navigation bar theme that configures all descendant BottomNavigationBar widgets.
const

child → Widget: The widget below this widget in the tree.
finalinherited
data → BottomNavigationBarThemeData: The properties used for all descendant BottomNavigationBar widgets.
final
hashCode → int: The hash code for this object.
nonVirtual">@nonVirtualread-onlyinherited
key → Key?: Controls how one widget replaces another widget in the tree.
finalinherited
runtimeType → Type: A representation of the runtime type of the object.
read-onlyinherited

createElement() → InheritedElement: Inflates this configuration to a concrete instance.
inherited
debugDescribeChildren() → List<DiagnosticsNode>: Returns a list of DiagnosticsNode objects describing this node's children.
protected">@protectedinherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void: Add additional properties associated with the node.
inherited
noSuchMethod(Invocation invocation) → dynamic: Invoked when a non-existent 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
updateShouldNotify(covariant BottomNavigationBarTheme oldWidget) → bool: Whether the framework should notify widgets that inherit from this widget.
override

operator ==(Object other) → bool: The equality operator.
nonVirtual">@nonVirtualinherited

of(BuildContext context) → BottomNavigationBarThemeData: Returns the configuration data from the closest BottomNavigationBarTheme ancestor. If there is no ancestor, it returns ThemeData.bottomNavigationBarTheme. Applications can assume that the returned value will not be null.