如果您打算将android项目链接到 不同 的firebase项目，那么您当然可以.
在android端，连接"只是一个json文件，存储在 yourProject/app/google-services.json .
您可以简单地将其替换为可以从新的Firebase项目的设置页面下载的另一个文件.

If you meant to link your android project to a different firebase project, then of course you can.
At the android side the "connection" is merely a json file stored at yourProject/app/google-services.json.
You can simply replace it with another file that you may download from the settings page of your new firebase project.