BarcodeBillScanner class

Widget used to read and convert a barcode.

It shows a friendly interface guiding the user to scan the barcode using the phone's camera. Este widget serve como tela para exibição da câmera que faz a leitura do código de barras.

Example:

 @override
 Widget build(BuildContext context) {
   return Stack(
     alignment: Alignment.center,
     children: [
       BarcodeBillScanner(
         onCancelLabel: "You can set a message to cancel an action",
         onSuccess: (String value) async {
           setState(() => barcode = value);
         },
         onCancel: () {
           setState(() => barcode = null);
         },
       ),
       if (barcode != null)
         Text(
           barcode!,
           textAlign: TextAlign.center,
           style: const TextStyle(
             fontSize: 20.0,
             color: Colors.amber,
           ),
         ),
     ],
   );
 }
Inheritance

Constructors

BarcodeBillScanner({Key? key, String infoText = "Scan the barcode using your camera.", required Future onSuccess(String value), dynamic onAction()?, required dynamic onCancel(), dynamic onError()?, String onActionLabel = "Type barcode", Color color = Colors.cyan, Color textColor = const Color(0xff696876), bool convertToFebraban = true, Color backdropColor = const Color(0x99000000)})
const

Properties

backdropColor → Color
Backdrop color used as a frame for reading the barcode.
final
color → Color
Main color.
final
convertToFebraban → bool
If true converts the barcode to FEBRABAN format (47/48 characters long).
final
hashCode → int
The hash code for this object.
no setterinherited
infoText → String
Text shown on top of the screen.
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
onAction → (dynamic Function()?)
Method called by the action button.
final
onActionLabel → String
Label for the action button.
final
onCancel → dynamic Function()
Method called by the cancel button.
final
onError → (dynamic Function()?)
Method called on error while reading the barcode.
final
onSuccess → Future Function(String value)
Method called after the barcode is successfuly read and converted.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
textColor → Color
Text color. Must have enough contrast with color.
final

Methods

createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → BarcodeMLKitState
Creates the mutable state for this widget at a given location in the tree.
override
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