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I have created a CustomDialog class that replicates the BiometricPrompt dialog (to maintain consistency across devices).Contact Us My Products Sign in Using fingerprint security on the motorola edge 20 pro Creating a UI similar to the BiometricPrompt Dialog - So now that we have enabled the fingerprint authentication in devices above 6.0 and below 8.0, we need to display an user interface to initiate the authentication. The fifth parameter, optional Handler instance - If a Handler object is provided, the FingerprintManagerCompat will use the Looper from that object when processing the messages from the fingerprint hardware.ĥ.The fourth parameter, AuthenticationCallback class - This will be the same as the BiometricAuthenticationCallback.The third parameter, cancellationSignal - is an object used to turn off the fingerprint scanner and cancel the current request.
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Fingerprint security pro android#
The second parameter is always zero - The Android documentation identifies this as set of flags and is most likely reserved for future use.The authenticate method requires the following parameters: BIOMETRIC_ACQUIRED_TOO_SLOW - The biometric image was unreadable due to lack of motion from the user around the sensor.BIOMETRIC_ACQUIRED_TOO_FAST - The biometric image was incomplete because the user moved their finger around the sensor too fast.BIOMETRIC_ACQUIRED_PARTIAL - Only a partial biometric image was detected.This could be because of a variety of reasons but generally this is because the image was not readable. BIOMETRIC_ACQUIRED_INSUFFICIENT - The biometric image was too noisy to process.BIOMETRIC_ACQUIRED_IMAGER_DIRTY - The biometric image was too noisy due to suspected dirt on the sensor.The different types of help codes that can occur are:
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The callback will be provided with an help code to identify the cause of the error, along with a help message. This method is called when a non-fatal error has occurred during the authentication process.