Integrating Google Sign-In error: status code 12501

When I try to integrating Google Sign-in activity into my app, happened to a error:

statusCode=unknown status code: 12501, resolution=null

It's caused by the wrong Server Client ID which saved in @values/strings.xml.

<string name="server_client_id">xxx-xxx.com</string>

It's web client id,not the android client id.