Xamarin Firebase PhoneAuth

Question

我需要创建一个具有Firebase Phone Auth的Xamarin应用程序（不是表单，但是分开的iOS和Android项目）。大多数文档表明支持Facebook Auth，但我也需要PhoneAuth。

我找到了Xamarin.Firebase.Auth，显然它支持它，但我无法实现它，也没有看到任何关于我应该使用哪个接口的文档。

Answer 1

Android和iOS都需要在Firebase控制台和平台特定的应用程序设置中进行设置，因此 Google Firebase Auth文档是必读的，用户需要通知每个应用的电话使用情况/费用各个国家的分销法律要求（在Firebase文档中注明...），iOS需要APN通知设置等...

Android通过Xamarin.Firebase.Auth示例：

文档：https://firebase.google.com/docs/auth/android/phone-auth

PhoneAuthCallbacks phoneAuthCallbacks = new PhoneAuthCallbacks();
PhoneAuthProvider.Instance.VerifyPhoneNumber("555-555-5555", 60, TimeUnit.Seconds, this, phoneAuthCallbacks);
// You can now obtain a user credential via the verification code and verification ID and 

//通过凭证签署用户（请参阅OnVerificationStateChangedCallbacks）

示例PhoneAuthProvider.OnVerificationStateChangedCallbacks类：

public class PhoneAuthCallbacks : PhoneAuthProvider.OnVerificationStateChangedCallbacks
{
    public override void OnVerificationCompleted(PhoneAuthCredential credential)
    {
        // This callback will be invoked in two situations:
        // 1 - Instant verification. In some cases the phone number can be instantly
        //     verified without needing to send or enter a verification code.
        // 2 - Auto-retrieval. On some devices Google Play services can automatically
        //     detect the incoming verification SMS and perform verification without
        //     user action.         
    }

    public override void OnVerificationFailed(FirebaseException exception)
    {
        // This callback is invoked in an invalid request for verification is made,
        // for instance if the the phone number format is not valid.
    }

    public override void OnCodeSent(string verificationId, PhoneAuthProvider.ForceResendingToken forceResendingToken)
    {
        // The SMS verification code has been sent to the provided phone number, we
        // now need to ask the user to enter the code and then construct a credential
        // by combining the code with a verification ID.
        base.OnCodeSent(verificationId, forceResendingToken);
    }
}

iOS通过Xamarin.Firebase.iOS.Auth示例：

文档：https://firebase.google.com/docs/auth/ios/phone-auth

var verificationID = await PhoneAuthProvider.DefaultInstance.VerifyPhoneNumberAsync("555-555-5555", null);
// You can now obtain a user credential via the verification code and verification ID.
// Now you can sign the user in via the credential