Question

我想制作一个Android应用程序，它注册用户指纹（来自设备的指纹扫描仪）并将其存储在数据结构或密钥存储提供商中，下次用户放入他的指纹扫描仪时，他应该进行身份验证来自存储在数据结构中的指纹或来自android密钥库提供程序的指纹。如果有人可以帮我解决这个问题。提前致谢。

Answer 1

很抱歉，据我所知，无法注册指纹。用户应在设置中注册他/她的手指。您只需检查用户指纹以进行身份验证。如果没有注册手指或没有指纹传感器，请轻松烘烤。

//Check whether the device has a fingerprint sensor//
        if (!mFingerprintManager.isHardwareDetected()) {
            // If a fingerprint sensor isn’t available, then inform the user that they’ll be unable to use your app’s fingerprint functionality//
            textView.setText("Your device doesn't support fingerprint authentication");
        }
        //Check whether the user has granted your app the USE_FINGERPRINT permission//
        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.USE_FINGERPRINT) != PackageManager.PERMISSION_GRANTED) {
            // If your app doesn't have this permission, then display the following text//
            Toast.makeText(EnterPinActivity.this, "Please enable the fingerprint permission", Toast.LENGTH_LONG).show();
        }

        //Check that the user has registered at least one fingerprint//
        if (!mFingerprintManager.hasEnrolledFingerprints()) {
            // If the user hasn’t configured any fingerprints, then display the following message//
            Toast.makeText(EnterPinActivity.this, "No fingerprint configured. Please register at least one fingerprint in your device's Settings", Toast.LENGTH_LONG).show();
        }

        //Check that the lockscreen is secured//
        if (!mKeyguardManager.isKeyguardSecure()) {
            // If the user hasn’t secured their lockscreen with a PIN password or pattern, then display the following text//
            Toast.makeText(EnterPinActivity.this, "Please enable lockscreen security in your device's Settings", Toast.LENGTH_LONG).show();
        }

查看本教程以了解检查用户指纹的方法：

Link1 Link2

Answer 2

由于已存储在android安全场所中，因此无法注册指纹并且无法访问指纹数据

Answer 3

注册后，您可以从android检索指纹ID。

因此，您可以利用android的设置活动在个人那里注册和匹配指纹ID，这样，您就可以将其用于识别和验证。

致谢。

在Android应用程序中注册用户指纹

3 个答案: