当从Facebook请求user_link权限时，GraphRequest.newMeRequest()返回一个空对象

问题描述

按照Firebase文档中的建议，我让Firebase在我的应用程序中处理登录到Facebook的信息:

I'm letting Firebase handle login to Facebook in my app, as advised in the Firebase docs:

        loginButton.setPermissions("email", "public_profile");

当我调用GraphRequest.newMeRequest()时，我请求的user_link权限如下:

When I call GraphRequest.newMeRequest(), I request the user_link permission as follows:

                Bundle parameters = new Bundle();
                // Need special permission from Faceook in order to get this data. Apply after we've settled on a new name for the app.
                parameters.putString("fields", "id, first_name, last_name, email, gender, birthday, timezone, picture, locale, user_link, age_range");
                request.setParameters(parameters);
                request.executeAsync();

但是当GraphRequest.newMeRequest()完成时，它将返回一个空对象.如果我在权限请求中遗漏了user_link，则不会发生这种情况.

But when GraphRequest.newMeRequest() completes, it returns a null object. This doesn't happen if I leave out user_link in my permissions request.

推荐答案

您不在那里请求权限，而是在请求字段.

You are not requesting permissions there, you are requesting fields.

该字段名为 link ，而不是 user_link .

您需要使用 loginButton.setPermissions 请求权限，然后使用正确的名称请求该字段.

You need to request the permission with loginButton.setPermissions, and then request the field by its correct name.

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