android - GMail API 获取未在 Android 中配置的访问权限

Question

嗨，我正在尝试在我的 android 应用程序中实现 GMail API 以在后台发送邮件。但我得到了这样的回应。即使我在我的应用中启用了 Gmail API 权限。

{
      "code" : 403,
      "errors" : [ {
        "domain" : "usageLimits",
        "message" : "Access Not Configured. The API (Gmail API) is not enabled for your project. Please use the Google Developers Console to update your configuration.",
        "reason" : "accessNotConfigured",
        "extendedHelp" : "https://console.developers.google.com"
      } ],
      "message" : "Access Not Configured. The API (Gmail API) is not enabled for your project. Please use the Google Developers Console to update your configuration."
    }

我按照https://developers.google.com/gmail/api/quickstart/android进行集成。