java - 在 Android 应用程序中注册用户指纹

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 key 存储提供程序中，下次用户放置他的指纹扫描仪时，他应该从存储的指纹中进行身份验证在数据结构中或来自 android keystore 提供程序。如果有人可以帮助我如何解决这个问题。提前致谢。

Answer 1

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。您可以只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，轻松烤。

//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();
        }

查看本教程以了解如何检查用户指纹:

Link1 Link2