NavigatorPopHandler class
Enables the handling of system back gestures.
Typically wraps a nested Navigator widget and allows it to handle system back gestures in the onPop callback.
This sample demonstrates how to use this widget to properly handle system
back gestures when using nested Navigators.
link
To create a local project with this code sample, run:
flutter create --sample=widgets.NavigatorPopHandler.1 mysample
This sample demonstrates how to use this widget to properly handle system
back gestures with a bottom navigation bar whose tabs each have their own
nested Navigators.
link
To create a local project with this code sample, run:
flutter create --sample=widgets.NavigatorPopHandler.2 mysample
See also:
- PopScope, which allows toggling the ability of a Navigator to handle pops.
- NavigationNotification, which indicates whether a Navigator in a subtree can handle pops.
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatefulWidget
- NavigatorPopHandler
Constructors
-
Creates an instance of NavigatorPopHandler.
const
Properties
- child → Widget
-
The widget to place below this in the widget tree.
final
- enabled → bool
-
Whether this widget's ability to handle system back gestures is enabled or
disabled.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- onPop → VoidCallback?
-
Called when a handleable pop event happens.
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(
) → State< NavigatorPopHandler> -
Creates the mutable state for this widget at a given location in the tree.
override
-
debugDescribeChildren(
) → List< DiagnosticsNode> -
Returns a list of
DiagnosticsNodeobjects 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