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Android Biometric Api is part of the AndroidX Biometric Library for biometric authentication. We can check biometric sensor in device with the help of Biometric Api. It provides UI to developers. There is no need to create custom UI. It supports all type of biometric authentication in device.
NOTE: For Android Biometric Api, min support Android version is Android P.
Android 6.0 (API level 23) introduced FingerprintManager. It is used only for fingerprint sensors. It doesn’t provide any UI to developers Developers needed to build their own fingerprint UI. In Android 9.0(P) FingerprintManager is deprecated. It releases a new API called BiometricPrompt.
Use to manage system-provided biometric dialog.
1. Add dependency in gradle
2. In your Activity/Fragment, check whether your device supports any biometric authentication.
3. Create a instance of BiometricPromptThe BiometricPrompt constructor needs 2 things ->
a. Executor -> specify a thread for callbacks
b. AutheticationCallback object -> object which has three methods
onAuthenticationSucceeded() -> called after successful login with biometric
onAuthenticationError() -> called when unrecoverable error occurs
onAuthenticationFailed() -> called when user is rejected.
4. Create prompt object to show biometric app.
5. Now, call authenticate function for biometric authentication
To know more about Android Biometric Api, check following link -> Biometric
Hope, this blog is helpful for you.
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