Firebase 数据库连接被服务器强制终止：不同区域#flutter

Question

我正在使用 flutter 构建应用程序并集成 firebase。一开始，我的应用程序工作得很好，但一段时间后，遇到这个问题，Firebase 强行终止了应用程序和服务器之间的连接。

W/PersistentConnection(4812)：pc_0 - Firebase 数据库连接被服务器强制终止。不会尝试重新连接。原因：数据库位于不同的区域。请将您的数据库 URL 更改为https://multiapp-f0e1e-default-rtdb.europe-west1.firebasedatabase.app

Answer 1

发生这种情况是因为，当您当时创建项目时，未启用实时数据库，这就是文件google-services.json不包含url实时数据库的原因。

我也面临着同样的问题，这就是我所做的。

我们还可以下载更新的google-services.json文件。但我手动添加了网址。

由此：

{
  "project_info": {
    "project_number": "xxx4071207xxx",
    "project_id": "xxxantonixxx",
    "storage_bucket": "xxxantonixxx.appspot.com"
  },

对此：

{
  "project_info": {
    "project_number": "xxx4071207xxx",
    "firebase_url": " https://multiapp-f0e1e-default-rtdb.europe-west1.firebasedatabase.app",
    "project_id": "xxxantonixxx",
    "storage_bucket": "xxxantonixxx.appspot.com"
  },

您将从这里获取数据库 URL：

But wait... it still might not work.

If you make changes to the google-services.json file. And recompile the app from start, still the changes DONOT take place immediately.

In my case, even if I deleted the google-services.json file and recompile the app again, it was working similar to before deleting.

Solution:##

So, in that case, we'll have to delete the build and .dart_tool folder in our project folder,

Or run flutter clean in terminal

and then recompile the app again from start.

I came to know about this after I wasted my 2 whole days, working in some other direction. That's why I had to share it, so that it doesn't happen to anybody else.