SDK Lifecycle

CafLivenessListener (Flutter)

The CafLivenessListener in Flutter handles key events during the SDK's liveness detection process. Below are the correct Flutter events you can listen to:

Event	Description
FaceAuthEventClosed	Triggered when the user cancels the liveness detection process.
FaceAuthEventFailure	Called when an SDK failure occurs, providing error details like errorType and errorDescription.
FaceAuthEventConnected	Triggered when the SDK is fully loaded and ready to start.
FaceAuthEventConnecting	Indicates the SDK is initializing or in the process of loading.
FaceAuthEventSuccess	Triggered upon successful liveness detection, with the result available in signedResponse.

Example Implementation

Below is an example of how to handle CafLivenessListener events in Flutter:

  void _setupFaceAuthListener(Stream<FaceAuthEvent> stream) {
    stream.listen((event) {
      if (event is FaceAuthEventConnecting) {
        print('Connecting to FaceAuth...');
      } else if (event is FaceAuthEventConnected) {
        print('Connected to FaceAuth.');
      } else if (event is FaceAuthEventClosed) {
        print('SDK closed by the user.');
      } else if (event is FaceAuthEventSuccess) {
        print('Success! SignedResponse: ${event.signedResponse}');
      } else if (event is FaceAuthEventFailure) {
        print(
          'Failure! Error type: ${event.errorType}, '
              'Error description: ${event.errorDescription}',
        );
      }
    });
  }