LivenessCheckScreen class

A screen that performs real-time liveness detection using face recognition.

This screen uses the device's front camera to detect facial features and verify that the user is a live person through eye blinking and smiling gestures.

Features:

  • Real-time face detection with ML Kit
  • Blur and lighting quality analysis
  • Eye blink detection with head movement filtering
  • Smile detection requiring visible teeth
  • Circular camera preview with overlay
  • Enhanced error messaging with technical details

Usage:

Navigator.push(
  context,
  MaterialPageRoute(builder: (context) => const LivenessCheckScreen()),
);
Inheritance

Constructors

LivenessCheckScreen({Key? key, LivenessCheckConfig config = const LivenessCheckConfig(), LivenessCheckController? controller})
const

Properties

config → LivenessCheckConfig
Configuration for the liveness check screen.
final
controller → LivenessCheckController?
Optional controller for manual camera control.
final
hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
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<LivenessCheckScreen>
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