MotionTabBar class

An animated bottom navigation bar.

MotionTabBar renders a row of tab items with a floating, animated indicator that slides to the currently selected tab. It is designed to be used as the bottomNavigationBar of a Scaffold, paired with a TabBarView in the body.

Example:

MotionTabBar(
  initialSelectedTab: 'Home',
  labels: const ['Home', 'Profile'],
  icons: const [Icons.home, Icons.person],
  onTabItemSelected: (index) => setState(() {}),
)
Inheritance

Constructors

MotionTabBar({Key? key, TextStyle? textStyle, Color? tabIconColor = Colors.black, double? tabIconSize = 24, Color? tabIconSelectedColor = Colors.white, double? tabIconSelectedSize = 24, Color? tabSelectedColor = Colors.black, Color? tabBarColor = Colors.white, double? tabBarHeight = 65, double? tabSize = 60, Function? onTabItemSelected, required String initialSelectedTab, required List<String?> labels, List<IconData>? icons, List<Widget>? iconWidgets, bool useSafeArea = true, List<Widget?>? badges, MotionTabBarController? controller, bool labelAlwaysVisible = false})
Creates a MotionTabBar.

Properties

badges → List<Widget?>?
Optional badges shown on each tab. The length must match labels; entries may be null to hide the badge for a specific tab.
final
controller → MotionTabBarController?
Optional MotionTabBarController to change the selected tab programmatically.
final
hashCode → int
The hash code for this object.
no setterinherited
icons → List<IconData>?
Optional IconData icons for each tab. Mutually exclusive with iconWidgets; either one must be provided.
final
iconWidgets → List<Widget>?
Optional custom widgets used as tab icons. Mutually exclusive with icons; either one must be provided.
final
initialSelectedTab → String
The label of the tab that is selected when the widget is first built. Must be one of labels.
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
labelAlwaysVisible → bool
Whether tab labels are always visible. When false (default), only the label of the selected tab is shown.
final
labels → List<String?>
Labels of the tabs. The length must match icons / iconWidgets.
final
onTabItemSelected → Function?
Callback invoked when a tab is selected, receiving the index of the newly selected tab.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
tabBarColor → Color?
Background color of the tab bar.
final
tabBarHeight → double?
Height of the tab bar.
final
tabIconColor → Color?
Color of the unselected tab icons.
final
tabIconSelectedColor → Color?
Color of the selected tab icon (shown inside the floating indicator).
final
tabIconSelectedSize → double?
Size of the selected tab icon (shown inside the floating indicator).
final
tabIconSize → double?
Size of the unselected tab icons.
final
tabSelectedColor → Color?
Background color of the floating indicator circle.
final
tabSize → double?
Size of the floating indicator circle.
final
textStyle → TextStyle?
TextStyle applied to the tab labels.
final
useSafeArea → bool
Whether to wrap the tab bar in a SafeArea (default: true).
final

Methods

createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<MotionTabBar>
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, int wrapWidth = 65}) → 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