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FingerprintManagerCompat.AuthenticationCallback

public static abstract class FingerprintManagerCompat.AuthenticationCallback
extends Object

java.lang.Object
↳	android.support.v4.hardware.fingerprint.FingerprintManagerCompat.AuthenticationCallback

Callback structure provided to authenticate(CryptoObject, int, CancellationSignal, AuthenticationCallback, Handler). Users of authenticate(CryptoObject, int, CancellationSignal, AuthenticationCallback, Handler) must provide an implementation of this for listening to fingerprint events.

Summary

Public constructors
`FingerprintManagerCompat.AuthenticationCallback()`

Public methods
`void`	`onAuthenticationError(int errMsgId, CharSequence errString)` Called when an unrecoverable error has been encountered and the operation is complete.
`void`	`onAuthenticationFailed()` Called when a fingerprint is valid but not recognized.
`void`	`onAuthenticationHelp(int helpMsgId, CharSequence helpString)` Called when a recoverable error has been encountered during authentication.
`void`	`onAuthenticationSucceeded(FingerprintManagerCompat.AuthenticationResult result)` Called when a fingerprint is recognized.

Inherited methods

From class


  
    java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long millis, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void`	`wait(long millis)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

Public constructors

FingerprintManagerCompat.AuthenticationCallback

FingerprintManagerCompat.AuthenticationCallback ()

Public methods

onAuthenticationError

void onAuthenticationError (int errMsgId, 
                CharSequence errString)

Called when an unrecoverable error has been encountered and the operation is complete. No further callbacks will be made on this object.

Parameters
`errMsgId`	`int`: An integer identifying the error message
`errString`	`CharSequence`: A human-readable error string that can be shown in UI

onAuthenticationFailed

void onAuthenticationFailed ()

Called when a fingerprint is valid but not recognized.

onAuthenticationHelp

void onAuthenticationHelp (int helpMsgId, 
                CharSequence helpString)

Called when a recoverable error has been encountered during authentication. The help string is provided to give the user guidance for what went wrong, such as "Sensor dirty, please clean it."

Parameters
`helpMsgId`	`int`: An integer identifying the error message
`helpString`	`CharSequence`: A human-readable string that can be shown in UI

onAuthenticationSucceeded

void onAuthenticationSucceeded (FingerprintManagerCompat.AuthenticationResult result)

Called when a fingerprint is recognized.

Parameters
`result`	`FingerprintManagerCompat.AuthenticationResult`: An object containing authentication-related data