android-fingerprint-api

问题 How to launch finger print enrollment settings screen(Add fingerprint screen) from my app? After enrolling finger print, is there any way to navigate back to my application? (with startActivityForResult) 回答1: After reading the docs, I found out that as of now, there is no such intent action available. I launched the security settings(where fingerprints option available) with the below Intent. startActivity(new Intent(android.provider.Settings.ACTION_SECURITY_SETTINGS)); 回答2: with API >= P

问题 How to launch finger print enrollment settings screen(Add fingerprint screen) from my app? After enrolling finger print, is there any way to navigate back to my application? (with startActivityForResult) 回答1: After reading the docs, I found out that as of now, there is no such intent action available. I launched the security settings(where fingerprints option available) with the below Intent. startActivity(new Intent(android.provider.Settings.ACTION_SECURITY_SETTINGS)); 回答2: with API >= P

问题 Is it possible to retrieve the number of available fingerprints in an Android device. I want to do some functionality when number of fingerprints changes in the device. For that I have to retrieve the number of fingerprints in the device first. Can anyone suggest how to do that. 回答1: On devices with a fingerprint sensor, users can enroll one or more fingerprints and use those fingerprints to unlock the device and perform other tasks. Android uses the Fingerprint Hardware Abstraction Layer

问题 I am using Android FingerPrintManager API and creating key pair using KeyPairGenerator, i want to encrypt a password with public key and then decrypt when user is authenticated by entring fingerPrint but as soon i run my project it gets crash and gives Caused by: java.lang.IllegalArgumentException: Crypto primitive not backed by AndroidKeyStore provider i hved used code from here : Android Fingerprint API Encryption and Decryption this post says that he is able to do ecryption and decryption

问题 I am testing on Pixel device with Fingerprint Gestures ON from accessibility. I am trying to get the gesture callbacks using FingerprintGestureController but never getting any gestures in return even after I turn the accessibility ON for this app from Settings->Accessibility. isGestureDetectionAvailable() is always returning false to me. Can someone please help. Here is the code: my_gesture_service.xml <accessibility-service xmlns:android="http://schemas.android.com/apk/res/android" android

问题 I have generated my SHA1 code from my keystore but when I try to create an OAuth client 2.0, Google game console is giving me the error: "Certificate fingerprint is invalid". Anyone knows why this happens? How do I fix this? 回答1: I've contacted Google Play Developer Support about this issue (I've got a same problem). Here is their answer : Please ensure the key is set to 2048 bit and is valid for at least 25 years. I've tried it, but sadly my debug.keystore is still not getting accepted,

问题 I want to make an android application, which registers user fingerprint (from device's fingerprint scanner) and stores it in a data structure or in key store provider, next time user put his fingerprint scanner, he should be authenticated from the fingerprints stored in the data structure or from the android keystore provider. If anyone can help me how to approach for this. Thanks in advance. 回答1: Sorry but as far as I know, no way to register fingerprint. User should register his/her finger

问题 I'm creating an app where the user has two options to unlock their app, one is using a pin and the other is using a fingerprint. In order to use the fingerprint they must first set up a pin because this pin is the decryption key to get their encrypted details out of SharedPreferences . So i've followed this tutorial here: http://www.techotopia.com/index.php/An_Android_Fingerprint_Authentication_Tutorial#Accessing_the_Android_Keystore_and_KeyGenerator I've managed to get the app to read a

问题 As mentioned here. I'm trying to trigger KeyPermanentlyInvalidatedException when new finger print was added to the device but this exception was not triggering. MyCode FingerprintActivity.java import android.Manifest; import android.annotation.TargetApi; import android.app.KeyguardManager; import android.content.pm.PackageManager; import android.hardware.fingerprint.FingerprintManager; import android.os.Build; import android.security.keystore.KeyGenParameterSpec; import android.security

问题 Androids 6.0 Fingerprint API cannot detect my fingerprint scanner on Samsung S5. Screen lock is secured with fingerprints I've 2 Fingerprints registered in fingerprint manager My S5 is updated to android 6.0 The fingerprint scanner is working fine, I use it to unlock my phone I cannot find anything to do with fingerprints in the Security Settings (Was told to allow Apps to have access to fingerprint here, but its not on it) In App Info of each app, is says Permissions: No Permissions