DoubleBackExitApp class

连续点击返回按钮退出应用, 如果要使用默认的提示信息(由SnackBar实现)的话, 那么要放在Scaffold 下方!

Inheritance

Constructors

DoubleBackExitApp({Key key, VoidCallback onShowExitHint, Duration duration: const Duration(seconds: 2), @required Widget child})
const

Properties

child Widget
child
final
duration → Duration
两次回退间隔
final
onShowExitHint VoidCallback
显示退出提示
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() → _DoubleBackExitAppState
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 DiagnosticsNode.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