Xamarin Firebase 身份验证 iOS答案

【问题标题】：Xamarin Firebase Auth iOSXamarin Firebase 身份验证 iOS
【发布时间】：2020-06-26 00:22:39
【问题描述】：

我正在努力让 Xamarin Firebase Auth on iOS return 值正确编码以处理我的成功/失败逻辑适用于 SignInWithEmailPasswordAsync(email, password) 和 CreateUserAsync。我确定问题出在我的var user = 和AuthDataResult signUpTask = 代码中，因为 CreateUser 和 SignIn 方法实际上正在将用户添加/登录到 firebase，因为我可以在控制台中看到它们......如果我手动注册一个firebase 中的用户，登录日期是空白的......当我通过我的 iOS 应用程序登录他们时，我看到那里出现了一个日期戳。如果我注册了一个新用户，他们会出现在 Firebase 身份验证控制台中……一切都很好。它只是将我的 AuthIOS.cs 文件的返回状态返回到调用登录和注册页面，以便我可以正确处理成功或失败。任何帮助或将不胜感激。这是我的代码：

项目级别 - IAuth.cs

 using System.Threading.Tasks;

 namespace PelletPirate.Interfaces {
     public interface IAuth
     {
         Task<string> LoginWithEmailPassword(string email, string password);
         Task<string> SignUpWithEmailPassword(string email, string password);
     } }

项目级别 - LoginPage.xaml.cs

using PelletPirate.Interfaces;
using System;
using System.ComponentModel;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;

namespace PelletPirate.Views
{
    [XamlCompilation(XamlCompilationOptions.Compile)]
    [DesignTimeVisible(true)]
    public partial class LoginPage : ContentPage
    {

        IAuth auth;

        public LoginPage()
        {
            InitializeComponent();
            auth = DependencyService.Get<IAuth>();
        }

        private async void BtnLogin_Clicked(object sender, EventArgs e)
        {
            string uid = await auth.LoginWithEmailPassword(Email.Text, Password.Text);
            await DisplayAlert("Do we have a user? ", uid, "Ok");
            if (uid != "")
            {
                ShowSuccess(uid);
            }
            else
            {
                ShowError();
            }
        }

        public async void ShowSuccess(string UID)
        {
            await DisplayAlert("Success!", UID, "OK");
            await Shell.Current.GoToAsync("//loggedin");
        }

        private async void ShowError()
        {
            await DisplayAlert("Authentication Failed", "E-mail or password are incorrect. Try again!", "OK");
        }

        private async void BtnRegister_Clicked(object sender, EventArgs e)
        {
            await Shell.Current.GoToAsync("//register");
        }

        private async void BtnGoogleLogin_Clicked(object sender, EventArgs e)
        {
            await DisplayAlert("Alert", "You need to delete this ADD button stuff", "OK");
        }

    }

}

项目级别 - RegistrationPage.xaml.cs

namespace PelletPirate.Views
{
    [XamlCompilation(XamlCompilationOptions.Compile)]
    public partial class RegisterPage : ContentPage
    {

        IAuth auth;

        public RegisterPage()
        {
            InitializeComponent();
            auth = DependencyService.Get<IAuth>();
        }

        async void BtnRegister_Clicked(object sender, EventArgs e)
        {
            string uid = await auth.SignUpWithEmailPassword(Email.Text, Password.Text);
            await DisplayAlert("Uid: ", uid, "OK");
            if (uid != "")
            {
                await DisplayAlert("Success", "Welcome to Pellet Pirate!", "OK");
                await DisplayAlert("User", uid, "OK");
                await Shell.Current.GoToAsync("//main");
            }
            else
            {
                await DisplayAlert("Sign Up Failed", "Something went wrong. Try again!", "OK");
            }
        }

        private async void BtnCancel_Clicked(object sender, EventArgs e)
        {
            await Shell.Current.GoToAsync("//login");
        }

    }

}

iOS 级别 - AuthIOS.cs

using Firebase.Auth;
using PelletPirate.Interfaces;
using PelletPirate.iOS;
using System;
using System.Threading.Tasks;
using Xamarin.Forms;

[assembly: Dependency(typeof(AuthIOS))]
namespace PelletPirate.iOS
{
    public class AuthIOS : IAuth
    {
        public async Task<string> LoginWithEmailPassword(string email, string password)
        {
            try
            {
                var user = await Auth.DefaultInstance.SignInWithPasswordAsync(email, password);
                return await user.User.GetIdTokenAsync();
            }
            catch (Exception)
            {
                return "";
            }
        }

        public async Task<string> SignUpWithEmailPassword(string email, string password)
        {
            try
            {
                AuthDataResult signUpTask = await Auth.DefaultInstance.CreateUserAsync(email, password);
                return signUpTask.User.Uid;
            }
            catch (Exception)
            {
                return "";
            }
        }
    }
}

** 再次感谢您的指导 **

【问题讨论】：

标签： firebase xamarin.forms firebase-authentication

【解决方案1】：

我想通了。只想分享给遇到相同问题的人！这是几个问题。

确保您的 Apple 开发者帐户已设置并输入在 Tools:Options:Xamarin:Apple Accounts 中进入 Visual Studio。
确保在 Visual Studio 菜单中，下拉 Debug 并单击底部的扳手名为“[您的解决方案名称].iOS”。确保自动配置已设置并且您从来自您在第 1 步中所做的 Apple 开发人员设置的下拉菜单。
最后，我修改了我的代码，专注于获取和返回用户 ID Token。

这是最终代码，也添加了 Android 级别：

项目级别 - IAuth.cs

using System.Threading.Tasks;

namespace PelletPirate.Interfaces
{
    public interface IAuth
    {
        Task<string> LoginWithEmailPassword(string email, string password);
        Task<string> SignUpWithEmailPassword(string email, string password);
    }
}

项目级别 - LoginPage.xaml.cs

using PelletPirate.Interfaces;
using System;
using System.ComponentModel;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;

namespace PelletPirate.Views
{
    [XamlCompilation(XamlCompilationOptions.Compile)]
    [DesignTimeVisible(true)]
    public partial class LoginPage : ContentPage
    {

        IAuth auth;

        public LoginPage()
        {
            InitializeComponent();
            auth = DependencyService.Get<IAuth>();
        }

        private async void BtnLogin_Clicked(object sender, EventArgs e)
        {
            var token = await auth.LoginWithEmailPassword(Email.Text, Password.Text);
            await DisplayAlert("Logged in: ", "Token: " + token, "OK");
                if (token != "")
            {
                ShowSuccess(token);
            }
            else
            {
                ShowError();
            }
        }

        public async void ShowSuccess(string Token)
        {
            await DisplayAlert("Success!", Token, "OK");
            await Shell.Current.GoToAsync("//loggedin");
        }

        private async void ShowError()
        {
            await DisplayAlert("Authentication Failed", "E-mail or password are incorrect. Try again!", "OK");
        }

        private async void BtnRegister_Clicked(object sender, EventArgs e)
        {
            await Shell.Current.GoToAsync("//register");
        }

        private async void BtnGoogleLogin_Clicked(object sender, EventArgs e)
        {
            await DisplayAlert("Alert", "You need to delete this ADD button stuff", "OK");
        }

    }

}

项目级别 - RegistrationPage.xaml.cs

using PelletPirate.Interfaces;
using System;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;

namespace PelletPirate.Views
{
    [XamlCompilation(XamlCompilationOptions.Compile)]
    public partial class RegisterPage : ContentPage
    {

        IAuth auth;

        public RegisterPage()
        {
            InitializeComponent();
            auth = DependencyService.Get<IAuth>();
        }

        async void BtnRegister_Clicked(object sender, EventArgs e)
        {
            var token = await auth.SignUpWithEmailPassword(Email.Text, Password.Text);
            await DisplayAlert("Token: ", token, "OK");
            if (token != "")
            {
                ShowSuccess(token);
            }
            else
            {
                ShowError();
            }
        }

        public async void ShowSuccess(string Token)
        {
            await DisplayAlert("Success!", Token, "OK");
            await Shell.Current.GoToAsync("//main");
        }

        private async void ShowError()
        {
            await DisplayAlert("Registration Failed", "Could not register to Pellet Pirate", "OK");
        }

        private async void BtnCancel_Clicked(object sender, EventArgs e)
        {
            await Shell.Current.GoToAsync("//login");
        }

    }

}

iOS 级别 - AuthIOS.cs

using Firebase.Auth;
using PelletPirate.Interfaces;
using PelletPirate.iOS;
using System.Threading.Tasks;
using Xamarin.Forms;

[assembly: Dependency(typeof(AuthIOS))]
namespace PelletPirate.iOS
{
    class AuthIOS : IAuth
    {
        public async Task<string> LoginWithEmailPassword(string email, string password)
        {
            var authDataResult = await Auth.DefaultInstance.SignInWithPasswordAsync(email, password);
            System.Diagnostics.Debug.WriteLine("In AuthIOS right after var authDataResult " + authDataResult.User.Uid + " <<-- user uid here?");
            return await authDataResult.User.GetIdTokenAsync();
        }

        public async Task<string> SignUpWithEmailPassword(string email, string password)
        {
            var authDataResult = await Auth.DefaultInstance.CreateUserAsync(email, password);
            System.Diagnostics.Debug.WriteLine("In AuthIOS right after var authDataResult " + authDataResult.User.Uid + " <<-- user uid here?");
            return await authDataResult.User.GetIdTokenAsync();
        }

    }

}

Android 级别 - AuthDroid.cs

using Firebase.Auth;
using PelletPirate.Droid;
using PelletPirate.Interfaces;
using System.Threading.Tasks;
using Xamarin.Forms;

[assembly: Dependency(typeof(AuthDroid))]
namespace PelletPirate.Droid
{
    public class AuthDroid : IAuth
    {

        public async Task<string> LoginWithEmailPassword(string email, string password)
        {
            var user = await FirebaseAuth.Instance.SignInWithEmailAndPasswordAsync(email, password);
            var token = await user.User.GetIdTokenAsync(false);
            return token.Token;
        }

        public async Task<string> SignUpWithEmailPassword(string email, string password)
        {
            var user = await FirebaseAuth.Instance.CreateUserWithEmailAndPasswordAsync(email, password);
            var token = await user.User.GetIdTokenAsync(false);
            return token.Token;
        }

    }
}

E N J O Y

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