QRState<T extends StatefulWidget> class abstract

Inheritance

• Object
• State<T>
• LifecycleState<T>
• QRState

Implemented types

• QrController

Constructors

QRState()

Properties

asyncInitOnce ↔ Future<PreviewDetails>?

getter/setter pair

cameraFacing ↔ CameraFacing

getter/setter pair, override

cameraState ↔ CameraState

getter/setter pair, override

context → BuildContext

The location in the tree where this widget builds.

no setter, inherited

flashState ↔ FlashState

getter/setter pair, override

formats → List<Symbology>

no setter

hashCode → int

The hash code for this object.

no setter, inherited

mounted → bool

Whether this State object is currently in a tree.

no setter, inherited

previewSize ↔ Size

getter/setter pair

routeObserver → RouteObserver<ModalRoute>

RouteObserver routeObserver needed to tracking widget is on top of Navigator tree or not

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

widget → T

The current configuration.

no setter, inherited

Methods

activate() → void

Called when this object is reinserted into the tree after having been removed via deactivate.

inherited

asyncInit() → Future<PreviewDetails>?

build(BuildContext context) → Widget

Describes the part of the user interface represented by this widget.

inherited

codeResultHandler(String? qr) → void

deactivate() → void

Called when this object is removed from the tree.

override

debugFillProperties(DiagnosticPropertiesBuilder properties) → void

Add additional properties associated with the node.

inherited

didChangeAccessibilityFeatures() → void

Called when the system changes the set of currently active accessibility features.

inherited

didChangeAppLifecycleState(AppLifecycleState state) → void

Called when the system puts the app in the background or returns the app to the foreground.

inherited

didChangeDependencies() → void

Called when a dependency of this State object changes.

override

didChangeLocales(List<Locale>? locales) → void

Called when the system tells the app that the user's locale has changed. For example, if the user changes the system language settings.

inherited

didChangeMetrics() → void

Called when the application's dimensions change. For example, when a phone is rotated.

inherited

didChangePlatformBrightness() → void

Called when the platform brightness changes.

inherited

didChangeTextScaleFactor() → void

Called when the platform's text scale factor changes.

inherited

didHaveMemoryPressure() → void

Called when the system is running low on memory.

inherited

didPop() → void

Called when the current route has been popped off.

inherited

didPopNext() → void

Called when the top route has been popped off, and the current route shows up.

inherited

didPopRoute() → Future<bool>

Called when the system tells the app to pop the current route, such as after a system back button press or back gesture.

inherited

didPush() → void

Called when the current route has been pushed.

inherited

didPushNext() → void

Called when a new route has been pushed, and the current route is no longer visible.

inherited

didPushRoute(String route) → Future<bool>

Called when the host tells the application to push a new route onto the navigator.

inherited

didPushRouteInformation(RouteInformation routeInformation) → Future<bool>

Called when the host tells the application to push a new RouteInformation and a restoration state onto the router.

inherited

didRequestAppExit() → Future<AppExitResponse>

Called when a request is received from the system to exit the application.

inherited

didUpdateWidget(covariant T oldWidget) → void

Called whenever the widget configuration changes.

inherited

dispose() → void

Called when this object is removed from the tree permanently.

override

heartbeat() → Future

Only scanner

initState() → void

Called when this object is inserted into the tree.

inherited

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

onPause() → void

override

onResume() → void

override

reassemble() → void

Called whenever the application is reassembled during debugging, for example during hot reload.

inherited

restart() → Future?

restart the camera

override

setState(VoidCallback fn) → void

Notify the framework that the internal state of this object has changed.

inherited

start({required int width, required int height, required QRCodeHandler qrCodeHandler, List<Symbology>? formats = const [Symbology.QR], bool camera2Enabled = false}) → Future<PreviewDetails>?

stop() → Future?

stop camera

override

switchCamera() → Future?

switch camera

override

switchCameraToBack() → Future?

switch camera to back

override

switchCameraToFront() → Future?

switch camera to front

override

toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode

Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.

inherited

toggleFlash() → Future?

toggle flash

override

toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) → String

A string representation of this object.

inherited

toStringShort() → String

A brief description of this object, usually just the runtimeType and the hashCode.

inherited

turnOffFlash() → Future?

turn off flash

override

turnOnFlash() → Future?

turn on flash

override

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Methods

getSupportedSizes() → Future<List<List<int>>?>

Only scanner