Q:

how to get facebook friend list with emails through new graph api, v2.5?

I am trying to fetch the friend list using the code below
GraphRequest request = GraphRequest.newMyFriendsRequest(
                token,
                new GraphRequest.GraphJSONArrayCallback() {
                    @Override
                    public void onCompleted(JSONArray array, GraphResponse response) {
                        // Insert your code here
                    }
                });
        request.executeAsync();
    }

The response returned after code execution is
{Response:  responseCode: 200, graphObject: {"data":[],"summary":{"total_count":461}}, error: null}

Persmission to access friends and public profile is granted on login time.
How can i fetch my friend list and their public emails/ facebook emails? 

A:

You'll only receive the friends whcih are also using your app, see

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

/me/friends returns the user's friends who are also using your app
  In v2.0, the friends API endpoint returns the list of a person's friends who are also using your app. In v1.0, the response included all of a person's friends.

And, no, there is no workaround in case you wanted to ask.

A:

You can recive your friends list using graph-api call 
/* make the API call */
new GraphRequest(
    AccessToken.getCurrentAccessToken(),
    "/me/friends",
    null,
    HttpMethod.GET,
    new GraphRequest.Callback() {
        public void onCompleted(GraphResponse response) {
            /* handle the result */
        }
    }
).executeAsync();

But the limitation is

api required access token with user_friends permission 
only return friends who are also given access permission to the same app you are
using

.
https://developers.facebook.com/docs/graph-api/reference/v2.5/user/friends

