Use androidx.biometric instead, which supports other forms of biometric authentication such as iris scanning an facial recognition, and provides a UI that is consistent across applications.
A simple, unified fingerprint authentication library for Android with RxJava extensions.
- Eliminates the need to deal with the different available Fingerprint APIs, including Imprint and Samsung Pass.
- Fixes undocumented bugs and idiosyncrasies in the underlying APIs.
- Supports more Imprint devices than FingerprintManagerCompat from the androidx library.
- Comes with help messages translated in over 80 locales that work with all APIs.
- Provides optional RxJava interfaces.
See the sample app for a complete example.
In your Application.onCreate, initialize Reprint with
Reprint.initialize(this). This will load the Marshmallow module, and the
Spass module if you included it.
Then, anywhere in your code, you can call Reprint.authenticate to turn on
the fingerprint reader and listen for a fingerprint. You can call
Reprint.cancelAuthentication to turn the reader off before it finishes
normally.
There are two ways to be notified of authentication results: traditional callback, and a ReactiveX Observable.
If you include the reactive reprint library, you can be notified of
authentication results through an Observable (or Flowable with RxJava 2) by
calling RxReprint.authenticate. In this case, the subscriber's onNext will
be called after each failure and after success.
RxReprint.authenticate()
.subscribe(result -> {
switch (result.status) {
case SUCCESS:
showSuccess();
break;
case NONFATAL_FAILURE:
showHelp(result.failureReason, result.errorMessage);
break;
case FATAL_FAILURE:
showError(result.failureReason, result.errorMessage);
break;
}
});The failureReason is an enum value with general categories of reason that
the authentication failed. This is useful for displaying custom help messages in your
UI.
The errorMessage is a string that will contain some help text provided by
the underlying SDK about the failure. You should show this text to the user,
or some other message of your own based on the failureReason. This string will
never be null from a failure, and will be localized into the current locale.
For detail on the other parameters, see the Javadocs.
One advantage that this interface has is that when the subscriber unsubscribes, the authentication request is automatically canceled. So you could, for example, use the RxLifecycle library to bind the observable, and the authentication will be canceled when your activity pauses.
If you want to use Reprint without RxJava, you can pass an
AuthenticationListener to authenticate. The onFailure callback will be
called repeatedly until the sensor is disabled or a fingerprint is authenticated
correctly, at which point onSuccess will be called.
Reprint.authenticate(new AuthenticationListener() {
public void onSuccess(int moduleTag) {
showSuccess();
}
public void onFailure(AuthenticationFailureReason failureReason, boolean fatal,
CharSequence errorMessage, int moduleTag, int errorCode) {
showError(failureReason, fatal, errorMessage, errorCode);
}
});The javadocs for the Reprint modules are available online:
Reprint is distributed with jitpack and split up into several libraries, so you can include only the parts that you use.
First, add Jitpack to your gradle repositories.
repositories {
maven { url "https://jitpack.io" }
}Then add the core library and optionally the Samsung Pass interface and the ReactiveX interface. Reprint provides support for both RxJava 1 and 2; you should include the module that matches the version of RxJava that you use in your project.
dependencies {
compile 'com.github.ajalt.reprint:core:3.3.2@aar' // required: supports marshmallow devices
compile 'com.github.ajalt.reprint:reprint_spass:3.3.2@aar' // optional: deprecated support for pre-marshmallow Samsung devices
compile 'com.github.ajalt.reprint:rxjava:3.3.2@aar' // optional: the RxJava 1 interface
compile 'com.github.ajalt.reprint:rxjava2:3.3.2@aar' // optional: the RxJava 2 interface
}Reprint requires the following permissions be declared in your
AndroidManifest.xml. As long as you use the aar artifacts, these permissions
will be included automatically.
<!-- Marshmallow fingerprint permission-->
<uses-permission android:name="android.permission.USE_FINGERPRINT"/>
<!-- Samsung fingerprint permission, only required if you include the Spass module -->
<uses-permission android:name="com.samsung.android.providers.context.permission.WRITE_USE_APP_FEATURE_SURVEY"/>Samsung has deprecated the Spass SDK in favor of the standard Android APIs. Although Reprint still provides
a module that uses the the Spass SDK if the standard APIs aren't available, you should be aware that the Spass
SDK has a known bug. If you don't need fingerprint support on
devices running KitKat, you should not include the reprint_spass module.
Copyright 2015-2019 AJ Alt
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
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