Unity C#中Firebase PhoneAuthOptions.Builder不存在的问题求助

错误原因 #

你混淆了Firebase原生平台（Android/iOS）与Unity SDK的API差异。在Unity Firebase Auth 11.0.0版本中，PhoneAuthOptions.Builder的实例不能通过new关键字创建，而是需要调用静态方法PhoneAuthOptions.NewBuilder()来获取构建器。

另外，Unity中无需手动调用SetActivity(this)——Firebase SDK会自动关联当前Unity应用的Android/iOS宿主活动，强行传入MonoBehaviour实例会导致额外错误。

修正后的代码 #

using Firebase.Auth;
using UnityEngine;

private void VerifyPhoneNumber()
{
    phoneAuthProvider = PhoneAuthProvider.GetInstance(firebaseAuth);

    // 核心修正：用NewBuilder替代new Builder()
    PhoneAuthOptions options = PhoneAuthOptions.NewBuilder(FirebaseAuth.DefaultInstance)
        .SetPhoneNumber(phoneNumber)
        .SetCallbacks(this) // 确保当前类实现了PhoneAuthProvider.ICallbacks接口
        .Build();

    phoneAuthProvider.VerifyPhoneNumber(options,
      verificationCompleted: (credential) =>
      {
          Debug.Log("Verification complete: " + credential);
      },
      verificationFailed: (error) =>
      {
          Debug.Log("The verification code was not sent: " + error);
      },
      codeSent: (id, token) =>
      {
          verificationId = id;
          verificationMessagePanel.SetActive(true);
          phoneNumberVerificationPanel.SetActive(false);
          Debug.Log("Verification code was successfully sent via SMS: " + id);
      },
      codeAutoRetrievalTimeOut: (id) =>
      {
          Debug.Log("`id` contains the verification id of the request that timed out: " + id);
      });
}

额外检查项 #

• 确保脚本顶部已引用命名空间：using Firebase.Auth;
• 在Unity Package Manager中验证：
  • Firebase Authentication包已安装（版本11.0.0）
  • Firebase Core包版本与Auth包完全一致（版本不匹配会导致API异常）
• 确认当前类已实现PhoneAuthProvider.ICallbacks接口，否则SetCallbacks(this)会报错

内容的提问来源于stack exchange，提问作者freepik19 nineteen