BackdropNavigationBackLayer class

Implements the back layer to be used for navigation.

This class can be used as BackdropScaffold.backLayer. It enables to use the back layer as a navigation list, similar to a Drawer.

Usage example:

int _currentIndex = 0;
final List<Widget> _pages = [Widget1(), Widget2()];

@override
Widget build(BuildContext context) {
  return MaterialApp(
    title: 'Backdrop Demo',
    home: BackdropScaffold(
      appBar: BackdropAppBar(
        title: Text("Navigation Example"),
        actions: <Widget>[
          BackdropToggleButton(
            icon: AnimatedIcons.list_view,
          )
        ],
      ),
      stickyFrontLayer: true,
      frontLayer: _pages[_currentIndex],
      backLayer: BackdropNavigationBackLayer(
        items: [
          ListTile(title: Text("Widget 1")),
          ListTile(title: Text("Widget 2")),
        ],
        onTap: (int position) => {setState(() => _currentIndex = position)},
      ),
    ),
  );
}
Inheritance

Constructors

BackdropNavigationBackLayer({Key? key, required List<Widget> items, ValueChanged<int>? onTap, IndexedWidgetBuilder? separatorBuilder, EdgeInsetsGeometry? itemPadding, ShapeBorder? itemSplashBorder, Color? itemSplashColor})
Creates an instance of BackdropNavigationBackLayer to be used with BackdropScaffold.

Properties

hashCode → int
The hash code for this object.
no setterinherited
itemPadding → EdgeInsetsGeometry?
Allows to set a Padding for each item of the list.
final
items → List<Widget>
The items to be inserted into the underlying ListView of the BackdropNavigationBackLayer.
final
itemSplashBorder → ShapeBorder?
Sets a custom border on the list items' InkWell. See InkResponse.customBorder.
final
itemSplashColor → Color?
Sets a custom splash color on the list items. See InkResponse.splashColor.
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
onTap → ValueChanged<int>?
Callback that is called whenever a list item is tapped by the user.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
separatorBuilder → IndexedWidgetBuilder?
Customizable separatorBuilder used with ListView.separated.
final

Methods

build(BuildContext context) → Widget
Describes the part of the user interface represented by this widget.
override
createElement() → StatelessElement
Creates a StatelessElement to manage this widget's location in the tree.
inherited
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