我意识到，我是有在为什么我的朋友选择器片段空？是该片段运行正常，它只是因为我使用Facebook的Graph版本2.0，那只能说明当前正在使用的应用程序中的朋友（没有，只是我）。有一种解决方法，也可以使用有使用的应用程序的片段检索所有的朋友，而不仅仅是一些其他的许可？

解决方案

看一看 https://developers.facebook.com/docs/apps/upgrading#upgrading_v2_0_user_ids

如果您使用的是图形API 2.0版，端点 / ME /朋友将始终只显示其中也使用该应用程序的朋友。

报价：

  

有两个关键的使用情况下，应用程序需要访问非应用程序的朋友：标签，并邀请。在V2.0中，我们添加了Taggable友API和Invitable朋友API来支持这些流程。

链接：

的https://developers.facebook.com/docs/graph-api/reference/v2.0/user/invitable_friends/ 的https://developers.facebook.com/docs/graph-api/reference/v2.0/user/taggable_friends/

如果你只是想展现共同的朋友也使用的应用程序，你可以使用

  / {USER_ID} .context / mutual_friends
 

  

... user_friends 权限是必需使用的应用程序，以查看其他好友的共同的朋友。

有一个在我的答案在Fetch我和另一位用户之间的Facebook共同的朋友

I realized that the problem I was having on Why is my friend picker fragment empty? was that the fragment run fine, its just since i am using facebook graph version 2.0, it only shows the friends that are currently using the app(none, just me). Is there a workaround or some other permission you can use to have the fragment retrieve all friends, not just the ones using the app?

解决方案

Have a look at https://developers.facebook.com/docs/apps/upgrading#upgrading_v2_0_user_ids

If you're using Graph API v2.0, the endpoint /me/friends will always only show the friends which are also using the app.

Quote:

There are two key use cases where apps need access to non-app friends: tagging and inviting. In v2.0, we've added the Taggable Friends API and the Invitable Friends API to support these flows.

Links:

https://developers.facebook.com/docs/graph-api/reference/v2.0/user/invitable_friends/ https://developers.facebook.com/docs/graph-api/reference/v2.0/user/taggable_friends/

If you "just" want to show mutual friends which also use the app, you can use the

/{user_id}.context/mutual_friends

... user_friends permission is required to view the mutual friends of other friends using the app.

Have a look at my answer at Fetch Facebook Mutual friends between me and another User