我使用的是Facebook的Andr​​oid SDK中。有一个简单的办法让谁下载了应用程序用户的好友？例如，应用程序画点什么实现了这一点。我似乎无法找到关于这个问题的任何信息

I am using the Facebook Android SDK. Is there an easy way to get a user's friends who have downloaded the app? For example, the app Draw Something implements this. I can't seem to find any information on this subject

我猜想，如果有可能，一些额外的信息，将需要在httppost访问这些信息。

I would guess that if it was possible, some extra information would be needed in the httppost to access this information.

推荐答案

* 的注意：因为3.14版本，我的/朋友将只返回的朋友也使用该应用程序，所以下面的实现是德precated。看到新的Invitable朋友或Taggable朋友API的替代品。

* Note: since 3.14 version, me/friends will only return friends that also use the app, so below implementation is deprecated. See the new "Invitable Friends" or "Taggable Friends" APIs for alternatives.

使用新的 Facebook的SDK为Android（3.0）是很容易得到用户的好友列表。 以下是code：

Using the new Facebook SDK for Android (3.0) is very easy to get your user's friend list. Following is the code:

private void requestFacebookFriends(Session session) {
    Request.executeMyFriendsRequestAsync(session,
            new Request.GraphUserListCallback() {
                @Override
                public void onCompleted(List<GraphUser> users,
                        Response response) {
                    // TODO: your code for friends here!
                }
            });
}

然而，为了得到谁在使用你的Facebook应用程序的用户的朋友有一点点复杂（因为Facebook的API文档）。但是，是，有可能

首先，创建您的要求：

private Request createRequest(Session session) {
    Request request = Request.newGraphPathRequest(session, "me/friends", null);

    Set<String> fields = new HashSet<String>();
    String[] requiredFields = new String[] { "id", "name", "picture",
            "installed" };
    fields.addAll(Arrays.asList(requiredFields));

    Bundle parameters = request.getParameters();
    parameters.putString("fields", TextUtils.join(",", fields));
    request.setParameters(parameters);

    return request;
}

请注意，你需要插入域的设置在您的要求。我要求使用相同的请求的用户图片路径。这里检查您的可能性。

Note that you need to insert the field "installed" in your request. I'm requesting the user picture path with the same request. Check your possibilities here.

接下来，你可以使用上面code创建您的要求，然后让你的朋友们：

Next, you can use above code to create your request and then get your friends:

private void requestMyAppFacebookFriends(Session session) {
    Request friendsRequest = createRequest(session);
    friendsRequest.setCallback(new Request.Callback() {

        @Override
        public void onCompleted(Response response) {
            List<GraphUser> friends = getResults(response);
            // TODO: your code here
        }
    });
    friendsRequest.executeAsync();
}

请注意，使用这种通用的要求，你没有收到GraphUser列表作为响应。你需要以下code得到响应，GraphUser清单：

Note that using this generic request, you don't receive a GraphUser list as response. You'll need following code to get the response as GraphUser list:

private List<GraphUser> getResults(Response response) {
    GraphMultiResult multiResult = response
            .getGraphObjectAs(GraphMultiResult.class);
    GraphObjectList<GraphObject> data = multiResult.getData();
    return data.castToListOf(GraphUser.class);
}

现在你可以使用你的用户的好友列表，信息，如果您的每一个朋友使用你的Facebook应用程序：

Now you can use your user's friend list, with the information if each of your friends use your Facebook app:

GraphUser user = friends.get(0);
boolean installed = false;
if(user.getProperty("installed") != null)
    installed = (Boolean) user.getProperty("installed");