如何将Android项目SendOtpCodeAsync的verificationId传到共享项目按钮点击事件

实现步骤 #

1. 修改共享项目IAuth接口定义 #

原有接口仅返回布尔状态，调整为同时返回验证状态和verificationId，可直接用元组实现，如需扩展更多返回字段也可自定义结果类：

namespace TestApp_MiniApps.Views.Xamarin.FireBase
{
    public interface IAuth
    {
        // 修改返回值为包含成功状态和verificationId的元组
        Task<(bool IsSuccess, string VerificationId)> SendOtpCodeAsync(string phonenumber);
    }
}

2. 修改Android项目AuthDriod实现 #

调整TaskCompletionSource的泛型类型，在回调中把verificationId带回共享项目：

[assembly: Dependency(typeof(AuthDriod))]
namespace TestApp_MiniApps.Droid
{
    public class AuthDriod : PhoneAuthProvider.OnVerificationStateChangedCallbacks, IAuth
    {
        // 泛型修改为和接口返回匹配的元组
        private TaskCompletionSource<(bool IsSuccess, string VerificationId)> _phoneAuthTcs;

        public Task<(bool IsSuccess, string VerificationId)> SendOtpCodeAsync(string phonenumber)
        {
            _phoneAuthTcs = new TaskCompletionSource<(bool IsSuccess, string VerificationId)>();

            Java.Lang.Long num = (Java.Lang.Long)60;
            PhoneAuthOptions options =
                PhoneAuthOptions.NewBuilder(FirebaseAuth.Instance)
                .SetPhoneNumber(phonenumber)       
                .SetTimeout(num, TimeUnit.Seconds) 
                .SetActivity(Platform.CurrentActivity)                 
                .SetCallbacks(this)          
                .Build();
            PhoneAuthProvider.VerifyPhoneNumber(options);

            return _phoneAuthTcs.Task;
        }

        public override void OnVerificationCompleted(PhoneAuthCredential credential)
        {      
            // 自动验证成功场景可按需返回credential相关信息，此处按原有逻辑兼容
            _phoneAuthTcs?.TrySetResult((true, string.Empty));
        }

        public override void OnVerificationFailed(FirebaseException exception)
        {
            // 验证失败返回false和空id
            _phoneAuthTcs?.TrySetResult((false, string.Empty));
        }

        public override void OnCodeSent(string verificationId, PhoneAuthProvider.ForceResendingToken forceResendingToken)
        {
            base.OnCodeSent(verificationId, forceResendingToken);
            // 把回调拿到的verificationId作为返回值传给共享项目
            _phoneAuthTcs?.TrySetResult((true, verificationId));
        }
    }
}

3. 共享项目接收verificationId #

将拿到的verificationId存为全局变量，后续提交验证码校验时使用即可：

// 页面全局变量，存储后续校验需要的verificationId
private string _currentVerificationId;
IAuth auth; 
auth = DependencyService.Get<IAuth>();

private async void SendCode_Button_Clicked(object sender, EventArgs e)
{
       var result = await auth.SendOtpCodeAsync(PhonenumberEntry.Text);
       if (result.IsSuccess)
       {
           _currentVerificationId = result.VerificationId;
           // 此处执行跳转到验证码输入页、显示验证码输入框等逻辑
       }
       else
       {
           // 此处执行验证码发送失败的提示逻辑
       }
}

如果你后续需要返回更多字段（比如错误信息、验证码重发token），可以自定义一个SendOtpResult类替代元组，扩展性更好。

内容的提问来源于stack exchange，提问作者Dan