使用Unity配置多个Firebase项目

Question

是否有可能为我的Unity应用程序配置多个Firebase项目，而无需深入Android或iOS代码？我尝试简单地切换google-services.json文件，但这未能将我的Unity应用程序指向正确的Firebase应用程序。理想情况下，我希望能够做这样的事情：

 void Awake()
{
    if (environment == Environment.Development)
    {
        SetDevelopmentEnvironment();
    }

    FirebaseApp.CheckDependencies();
    FirebaseApp.FixDependenciesAsync();
    auth = FirebaseAuth.DefaultInstance;
}

public void SetDevelopmentEnvironment()
{
    AppOptions firebaseDevelopmentAppOptions = new AppOptions();
    firebaseDevelopmentAppOptions.ProjectId = "test";
    firebaseDevelopmentAppOptions.StorageBucket = "test.appspot.com";
    firebaseDevelopmentAppOptions.AppId = "1:12345:android: xyz";
    firebaseDevelopmentAppOptions.ApiKey = "123Key";
    firebaseDevelopmentAppOptions.MessageSenderId = "123SenderID";
    System.Uri dbURL = new System.Uri("https://test.firebaseio.com");
    firebaseDevelopmentAppOptions.DatabaseUrl = dbURL;
    FirebaseApp.Create(firebaseDevelopmentAppOptions);
}

或者更好的方法是从Resources文件夹传递适当的google-services.json。

Answer 1

现在做您在问题中首先提出的问题，如果您可以在运行时以某种方式完成。你必须非常小心，Unity中的Firebase是一个懒惰初始化的单例。也就是说，访问属性FirebaseApp.DefaultInstance或调用依赖于它的任何函数将导致创建Firebase单例。您可以尝试使用firebaseapp.create(AppInfo)手动创建一个Firebase实例，但在游戏设计中必须非常结构化，以确保在隐式构造firebaseapp之前调用该实例（create应该设置全局默认实例，但checkandFixDependenciesAsync是一个异步调用，可能需要多个帧才能完成。这可能会出现一个棘手的bug表面）。正如@twinsens指出的那样，您可以传入从json文件生成的appop，但是在assets/目录中有多个名为google-services.json的文件并不是一个定义良好的场景。您需要重命名非默认配置（可能还需要将扩展名更改为.txt，以便将它们作为TextAsset)检索。

类似于这样：

async void Awake()
{
    var dependencyStatus = await FirebaseApp.CheckAndFixDependenciesAsync();
    if (dependencyStatus != DependencyStatus.Available) {
        // error handling here
        return;
    }

    FirebaseApp app;
    if (environment == Environment.Development)
    {
        // I'm being extra cautious. `DefaultInstance` should have the one you create.
        app = SetDevelopmentEnvironment();
    }
    else {
        app = FirebaseApp.DefaultInstance;
    }

    // I'm being extra explicit just in case
    // for large projects, I'd prefer some sort of DI over the singletons anyway
    auth = FirebaseAuth.GetAuth(app);
}

public FirebaseApp SetDevelopmentEnvironment()
{
    AppOptions firebaseDevelopmentAppOptions = new AppOptions();
    firebaseDevelopmentAppOptions.ProjectId = "test";
    firebaseDevelopmentAppOptions.StorageBucket = "test.appspot.com";
    firebaseDevelopmentAppOptions.AppId = "1:12345:android: xyz";
    firebaseDevelopmentAppOptions.ApiKey = "123Key";
    firebaseDevelopmentAppOptions.MessageSenderId = "123SenderID";
    System.Uri dbURL = new System.Uri("https://test.firebaseio.com");
    firebaseDevelopmentAppOptions.DatabaseUrl = dbURL;
    return FirebaseApp.Create(firebaseDevelopmentAppOptions);
}