我可以使用此逻辑来获取Google帐户的电子邮件地址（使用Google+ API（人））

Question

when I use 「 https://www.googleapis.com/plus/v1/people/ {userId}」to get the json of people profile, I use the code below to get user's google account email(.NET) but is there any guarantee that the user's google account is the first one of emails[] array? I doubt if this is the right way to get a user's email.

        if (json.emails != null)
        {
            if (json.emails.Count != 0)
            {
                if (json.emails[0].type == "account")
                email = json.emails[0].value;
            }
        }

Answer 1

First of all I would use https://www.googleapis.com/plus/v1/people/me as its the current authenticated user you are after.

If you read the documentation found at: People

Emails is a list with value and the type.  Type = account is what you are after.

The type of address. Possible values include, but are not limited to, the following values:

• "account" - Google account email address.
• "home" - Home email address.
• "work" - Work email address.
• "other" - Other.

The list may contain more the one email address, but just scan though them looking for the one that is set to type = account.

Note: Scroll to the bottom of this page you can play with the response: https://developers.google.com/+/api/latest/people/get

(Remember to authenticate it in the top of the "Try it!" form, also in the userId field just type me)