FingerPrint not working on samsung devices about reprint HOT 6 CLOSED

The sample app works fine on Samsung devices, so there's probably an issue in how you're integrating the library. Have you tried the sample app on your devices? Make sure that you're including the right gradle dependencies in you integration, and that you're using the aar artifacts or including the right permissions in you manifest. Finally, make sure you're only initializing reprint once in your app, and not each time you start an activity.

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i have integrated same as you said In Application.onCreate, initialize Reprint with Reprint.initialize(this) once
then in my LockService's onCreate i 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);
    }
});

added this in my build.gradle within android{ }

repositories {
    maven { url "https://jitpack.io" }
}

added all these dependencies in same gradle (app:gradle)
compile 'com.github.ajalt.reprint:core:3.1.0@aar' // required: supports marshmallow devices
compile 'com.github.ajalt.reprint:reprint_spass:3.1.0@aar' // optional: support for pre-marshmallow compile 'com.github.ajalt.reprint:rxjava:3.1.0@aar' // optional: the RxJava 1 interface
compile 'com.github.ajalt.reprint:rxjava2:3.1.0@aar' // optional: the RxJava 2 interface

and added those permissions in manifest

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also tried your sample apk
https://github.com/ajalt/reprint/releases/download/2.5.6/sample-debug.apk
its showing only that fingerprint is present,registered and listening but onSuccess() never called

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You said you were trying to run this from a service? That's probably the issue. Many versions of android won't let you use the fingerprint sensor unless you have a foreground activity.

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yes i think this was the issue before...
but now i am inflating view by adding it to window manager within service but i am starting service like this to bring it to front/foreground by intent flags

Intent i = new Intent(context, LockService.class);
i.setAction(ACTION_LOCK_SCREEN);
i.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP
| Intent.FLAG_ACTIVITY_CLEAR_TASK
| Intent.FLAG_ACTIVITY_NEW_TASK
| Intent.FLAG_RECEIVER_FOREGROUND
| Intent.FLAG_ACTIVITY_REORDER_TO_FRONT
| Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT
| Intent.FLAG_ACTIVITY_SINGLE_TOP);
context.startService(i);

now my view is on the top of all view but its still not working....even on that view fingerprint sensor not listening neither correct finger nor wrong finger

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A foreground service is not enough. You need a foreground activity.

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