Xamarin.Forms Android PhoneAuthProvider.Instance.VerifyPhoneNumber deprecated Resolve

Xamarin.Forms Android PhoneAuthProvider.Instance.VerifyPhoneNumber deprecated

변경전

            PhoneAuthProvider.Instance.VerifyPhoneNumber(
            phoneNumber,
            OTP_TIMEOUT,  //  const int 30
            TimeUnit.Seconds,
            Platform.CurrentActivity,
            onVerificaton);

 변경후

  FirebaseAuth auth = FirebaseAuth.Instance;
  PhoneAuthOptions options = 
  PhoneAuthOptions.NewBuilder(auth)
                .SetPhoneNumber(phoneNumber)       // Phone number to verify
                .SetTimeout((Java.Lang.Long)30L, TimeUnit.Seconds) // Timeout and unit
                .SetActivity(Platform.CurrentActivity)                 // Activity (for callback binding)
                .SetCallbacks(this)          // OnVerificationStateChangedCallbacks
                .Build();

PhoneAuthProvider.VerifyPhoneNumber(options);

--> OnCodeSent 자동 실행.

public override void OnCodeSent(string verificationId, PhoneAuthProvider.ForceResendingToken forceResendingToken)
{
base.OnCodeSent(verificationId, forceResendingToken);
_verificationId = verificationId;

        this._forceResendingToken = forceResendingToken;
        _phoneAuthTcs?.TrySetResult(true);

        Console.WriteLine("#######:"+forceResendingToken.ToString());
        Console.WriteLine("#############:"+_phoneAuthTcs.ToString());


        System.Diagnostics.Debug.WriteLine("################# PhoneAuthCredential created Automatically" + _verificationId.ToString());
    }