GpQrScannerScreen class
Pantalla de escaneo (QR y códigos de barra) con el chrome estándar de GP: marco de escaneo, botón de linterna y mensaje de guía. Pide permiso de cámara con GpPermissions (explicación primero, prompt nativo después) antes de encender la cámara.
Al detectar un código, si se pasó onDetect lo invoca; en cualquier
caso cierra la pantalla con Navigator.pop(context, code) — sirve tanto
para await Navigator.push(...) (leer el resultado directo) como para
lógica más compleja vía el callback.
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatefulWidget
- GpQrScannerScreen
Constructors
- GpQrScannerScreen({Key? key, String? title, String instructionsText = 'Apunta la cámara al código', void onDetect(String code)?, String permissionRationaleTitle = 'Necesitamos usar tu cámara', String permissionRationaleMessage = 'La usamos únicamente para escanear el código — no se guarda ninguna foto.', String permissionSettingsMessage = 'Para escanear un código necesitás habilitar el permiso de cámara desde Ajustes.'})
-
const
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- instructionsText → String
-
final
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- onDetect → void Function(String code)?
-
final
- permissionRationaleMessage → String
-
final
- permissionRationaleTitle → String
-
final
- permissionSettingsMessage → String
-
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- title → String?
-
final
Methods
-
createElement(
) → StatefulElement -
Creates a StatefulElement to manage this widget's location in the tree.
inherited
-
createState(
) → State< GpQrScannerScreen> -
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, int wrapWidth = 65}) → 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