Summary: Nested Classes | Methods | Inherited Methods

Class3BiometricAuthPrompt

Kotlin |Java

public class Class3BiometricAuthPrompt
extends Object

java.lang.Object
↳	androidx.biometric.auth.Class3BiometricAuthPrompt

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This class is used to build and configure a BiometricPrompt for authentication that only permits Class 3 biometric modalities (fingerprint, iris, face, etc), and then start authentication. Class 3 (formerly known as Strong) refers to the strength of the biometric sensor, as specified in the Android 11 CDD. Class 3 authentication can be used for applications that use cryptographic operations.

Summary

Nested classes
class	Class3BiometricAuthPrompt.Builder Builds a BiometricPrompt object for class 3 biometric only authentication with specified options.

Public methods
BiometricPrompt.CryptoObject	getCrypto() Gets the crypto object for the prompt authentication.
CharSequence	getDescription() Gets the description for the prompt.
CharSequence	getSubtitle() Gets the subtitle for the prompt.
boolean	isConfirmationRequired() Indicates whether prompt requires explicit user confirmation after a passive biometric (e.g.
AuthPrompt	startAuthentication() Begins authentication using the configured biometric prompt, and returns an AuthPrompt wrapper that can be used for cancellation and dismissal of the biometric prompt.

Inherited methods
From class java.lang.Object Object clone() boolean equals(Object arg0) void finalize() final Class<?> getClass() int hashCode() final void notify() final void notifyAll() String toString() final void wait(long arg0, int arg1) final void wait(long arg0) final void wait()

Public methods

getCrypto

public BiometricPrompt.CryptoObject getCrypto ()

Gets the crypto object for the prompt authentication.

Returns
BiometricPrompt.CryptoObject	Crypto object associated with this authentication.

getDescription

public CharSequence getDescription ()

Gets the description for the prompt. Defaults to null.

Returns
CharSequence	description for the prompt

getSubtitle

public CharSequence getSubtitle ()

Gets the subtitle for the prompt.

Returns
CharSequence	subtitle for the prompt

isConfirmationRequired

public boolean isConfirmationRequired ()

Indicates whether prompt requires explicit user confirmation after a passive biometric (e.g. iris or face) has been recognized but before AuthPromptCallback.onAuthenticationSucceeded(androidx.fragment.app.FragmentActivity, BiometricPrompt.AuthenticationResult) is called.

Returns
boolean	whether prompt requires explicit user confirmation after a passive biometric.

startAuthentication

public AuthPrompt startAuthentication ()

Begins authentication using the configured biometric prompt, and returns an AuthPrompt wrapper that can be used for cancellation and dismissal of the biometric prompt.

Returns
AuthPrompt	AuthPrompt wrapper that can be used for cancellation and dismissal of the biometric prompt using AuthPrompt.cancelAuthentication()