在 Android 上處理 Firebase 電話號碼驗證錯誤

import android.util.Log
// Credential Manager is included with the Firebase PNV library.
import androidx.credentials.exceptions.GetCredentialCancellationException
import com.google.firebase.pnv.FirebasePhoneNumberVerification
import com.google.firebase.pnv.FirebasePhoneNumberVerificationException
import com.google.firebase.pnv.FirebasePnvStatusCodes

private const val TAG = "PhoneVerification"

// In your Activity:
private fun verifyPhoneNumber() {
    FirebasePhoneNumberVerification.getInstance()
        .getVerifiedPhoneNumber(this)
        .addOnSuccessListener { result ->
            // Send result.getToken() to your backend.
        }
        .addOnFailureListener { e -> handleFpnvError(e) }
}

private fun handleFpnvError(e: Exception) {
    if (e !is FirebasePhoneNumberVerificationException) {
        Log.w(TAG, "Firebase PNV failed", e)
        showSmsVerification()
        return
    }
    when (e.errorCode) {
        FirebasePnvStatusCodes.CREDENTIAL_MANAGER_ERROR -> {
            if (e.cause is GetCredentialCancellationException) {
                // The user dismissed the consent screen.
            }
            showSmsVerification()
        }
        FirebasePnvStatusCodes.INVALID_TEST_NUMBER_ID -> {
            // Test mode only: generate a new test token.
            Log.e(TAG, "Firebase PNV test token rejected", e)
        }
        FirebasePnvStatusCodes.ACTIVITY_CONTEXT_REQUIRED -> {
            // App bug: pass an Activity to getVerifiedPhoneNumber().
            Log.e(TAG, "Firebase PNV needs an Activity context", e)
        }
        else -> {
            // Carrier not supported, network errors, and other failures.
            Log.w(TAG, "Firebase PNV failed with error code ${e.errorCode}", e)
            showSmsVerification()
        }
    }
}