Firebase 初始化

官方範例

The Firebase Unity SDK for Android requires Google Play services, which must be up-to-date before the SDK can be used.
官方初始化範例

Firebase.FirebaseApp.CheckAndFixDependenciesAsync().ContinueWith(task => {
  var dependencyStatus = task.Result;
  if (dependencyStatus == Firebase.DependencyStatus.Available) {
    // Create and hold a reference to your FirebaseApp,
    // where app is a Firebase.FirebaseApp property of your application class.
       app = Firebase.FirebaseApp.DefaultInstance;

    // Set a flag here to indicate whether Firebase is ready to use by your app.
  } else {
    UnityEngine.Debug.LogError(System.String.Format(
      "Could not resolve all Firebase dependencies: {0}", dependencyStatus));
    // Firebase Unity SDK is not safe to use here.
  }
});

Create FirebaseApp

根據google-services.json或GoogleService-Info.plist內設定串建預設的FirebaseApp

FirebaseApp app = FirebaseApp.DefaultInstance;
Debug.Log(app.Name);//output:__FIRAPP_DEFAULT

一個應用程式內內創建多個FirebaseApp

Firebase.AppOptions secondaryAppOptions = new Firebase.AppOptions {
  ApiKey = "<API_KEY>",
  AppId = "<GOOGLE_APP_ID>",
  ProjectId = "<PROJECT_ID>"
};
FirebaseApp secondaryApp = FirebaseApp.Create(secondaryAppOptions, name);
Debug.Log(secondaryApp.Name);//output: 會是你輸入的name，需唯一

如果要用APP使用其他Firebase功能，以Auth作範例

FirebaseAuth auth = FirebaseAuth.DefaultInstance;
FirebaseAuth secondaryAuth = FirebaseAuth.GetAuth(secondaryApp);

Reference

Add Firebase to your Unity project
Configure multiple projects