Android 生物识别 API 问题

如何解决Android 生物识别 API 问题

我想要实现的目标： 提供使用指纹、FaceId 和 Iris 等不同生物识别信息登录的选项。我想提供使用 PIN、密码或图案的选项，以防任何生物识别传感器不起作用。

问题：当用户点击“使用密码”选项时，它直接转到“onAuthenticationError”回调，我正在检查错误BiometricPrompt.ERROR_NEGATIVE_BUTTON 的代码。我担心的是，我需要自己处理吗？我的意思是我是否需要显示一个 dialogPopUp，我将要求用户输入他/她的电子邮件/用户名和密码，然后他/她可以登录我的应用程序？

我做了什么：

依赖：

implementation 'androidx.biometric:biometric:1.2.0-alpha01'

MainActivity.kt

    class MainActivity : AppCompatActivity() {

    private lateinit var executor: Executor
    private lateinit var biometricPrompt: BiometricPrompt

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        executor = ContextCompat.getMainExecutor(this)
        biometricPrompt = createBiometricObject()
    }

    private fun createBiometricObject(): BiometricPrompt {

        return BiometricPrompt(this,executor,object : AuthenticationCallback() {

            override fun onAuthenticationError(errorCode: Int,errString: CharSequence) {
                super.onAuthenticationError(errorCode,errString)

                if (errorCode == ERROR_NEGATIVE_BUTTON && errString == "Use Password") {
                    // Do I need to create my own DialogPopUp?
                }
            }

            override fun onAuthenticationFailed() {
                super.onAuthenticationFailed()
            }

            override fun onAuthenticationSucceeded(result: BiometricPrompt.AuthenticationResult) {
                super.onAuthenticationSucceeded(result)
            }
        })
    }

    fun loginWithBiometrics(view: View) {
        when (BiometricManager.from(this).canAuthenticate(BIOMETRIC_STRONG)) {
            BiometricManager.BIOMETRIC_SUCCESS -> biometricPrompt.authenticate(
                createPromptInfoForBiometrics()
            )
            BiometricManager.BIOMETRIC_ERROR_NONE_ENROLLED -> Toast.makeText(
                this,"Please enroll your biometrics",Toast.LENGTH_LONG
            ).show()
            BiometricManager.BIOMETRIC_ERROR_NO_HARDWARE -> Toast.makeText(
                this,"Device not compatible",Toast.LENGTH_LONG
            ).show()
            BiometricManager.BIOMETRIC_ERROR_HW_UNAVAILABLE -> Toast.makeText(
                this,"Sensors are available as off Now,please try again later!",Toast.LENGTH_LONG
            ).show()
            BiometricManager.BIOMETRIC_ERROR_Security_UPDATE_required -> {
                Todo()
            }
            BiometricManager.BIOMETRIC_ERROR_UNSUPPORTED -> {
                Todo()
            }
            BiometricManager.BIOMETRIC_STATUS_UNKNowN -> {
                biometricPrompt.authenticate(createPromptInfoForBiometrics())
            }
        }
    }

    private fun createPromptInfoForBiometrics(): BiometricPrompt.PromptInfo {
        return BiometricPrompt.PromptInfo.Builder()
            .setTitle("Biometric Login")
            .setSubtitle("Please login with your biometrics")
            .setNegativeButtonText("Use Password")
            .setAllowedAuthenticators(BIOMETRIC_STRONG)
            .build()
    }
}

任何帮助将不胜感激。