DefaultTabController class
The TabController for descendant widgets that don't specify one explicitly.
DefaultTabController is an inherited widget that is used to share a TabController with a TabBar or a TabBarView. It's used when sharing an explicitly created TabController isn't convenient because the tab bar widgets are created by a stateless parent widget or by different parent widgets.
class MyDemo extends StatelessWidget {
final List<Tab> myTabs = <Tab>[
Tab(text: 'LEFT'),
Tab(text: 'RIGHT'),
];
@override
Widget build(BuildContext context) {
return DefaultTabController(
length: myTabs.length,
child: Scaffold(
appBar: AppBar(
bottom: TabBar(
tabs: myTabs,
),
),
body: TabBarView(
children: myTabs.map((Tab tab) {
return Center(child: Text(tab.text));
}).toList(),
),
),
);
}
}
- Inheritance
- Object
- Diagnosticable
- DiagnosticableTree
- Widget
- StatefulWidget
- DefaultTabController
Constructors
Properties
- child → Widget
-
The widget below this widget in the tree. [...]
final
- initialIndex → int
-
The initial index of the selected tab. [...]
final
- length → int
-
The total number of tabs. Typically greater than one.
final
- hashCode → int
-
The hash code for this object. [...]
read-only, inherited
- key → Key
-
Controls how one widget replaces another widget in the tree. [...]
final, inherited
- runtimeType → Type
-
A representation of the runtime type of the object.
read-only, inherited
Methods
-
createState(
) → _DefaultTabControllerState -
Creates the mutable state for this widget at a given location in the tree. [...]
override
-
createElement(
) → StatefulElement -
Creates a StatefulElement to manage this widget's location in the tree. [...]
inherited
-
debugDescribeChildren(
) → List< DiagnosticsNode> -
Returns a list of DiagnosticsNode objects describing this node's
children. [...]
@protected, inherited
-
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 toStringDeep. [...]
inherited
-
toString(
{DiagnosticLevel minLevel: DiagnosticLevel.debug }) → String -
Returns 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 ==(
dynamic other) → bool -
The equality operator. [...]
inherited
Static Methods
-
of(
BuildContext context) → TabController - The closest instance of this class that encloses the given context. [...]