Summary: Constants | Methods | Inherited Methods

BiometricManager

Kotlin |Java

public class BiometricManager
extends Object

java.lang.Object
↳	androidx.biometric.BiometricManager

A class that provides system information related to biometrics (e.g. fingerprint, face, etc.).

On devices running Android 10 (API 29) and above, this will query the framework's version of BiometricManager. On Android 9.0 (API 28) and prior versions, this will query FingerprintManagerCompat.

See also:

To prompt the user to authenticate with their biometric.

Summary

Constants
`int`	`BIOMETRIC_ERROR_HW_UNAVAILABLE` The hardware is unavailable.
`int`	`BIOMETRIC_ERROR_NONE_ENROLLED` The user does not have any biometrics enrolled.
`int`	`BIOMETRIC_ERROR_NO_HARDWARE` There is no biometric hardware.
`int`	`BIOMETRIC_SUCCESS` No error detected.

Public methods
`int`	`canAuthenticate()` Checks if the user can authenticate with biometrics.
`static BiometricManager`	`from(Context context)` Creates a `BiometricManager` instance from the given context.

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()`

Constants

BIOMETRIC_ERROR_HW_UNAVAILABLE

public static final int BIOMETRIC_ERROR_HW_UNAVAILABLE

The hardware is unavailable. Try again later.

Constant Value: 1 (0x00000001)

BIOMETRIC_ERROR_NONE_ENROLLED

public static final int BIOMETRIC_ERROR_NONE_ENROLLED

The user does not have any biometrics enrolled.

Constant Value: 11 (0x0000000b)

BIOMETRIC_ERROR_NO_HARDWARE

public static final int BIOMETRIC_ERROR_NO_HARDWARE

There is no biometric hardware.

Constant Value: 12 (0x0000000c)

BIOMETRIC_SUCCESS

public static final int BIOMETRIC_SUCCESS

No error detected.

Constant Value: 0 (0x00000000)

Public methods

canAuthenticate

public int canAuthenticate ()

Checks if the user can authenticate with biometrics. This requires at least one biometric sensor to be present, enrolled, and available on the device.

Returns
`int`	`BIOMETRIC_SUCCESS` if the user can authenticate with biometrics. Otherwise, returns an error code indicating why the user cannot authenticate.

from

public static BiometricManager from (Context context)

Creates a BiometricManager instance from the given context.

Parameters
`context`	`Context`

Returns
`BiometricManager`	An instance of `BiometricManager`.