FriendPickerFragment.java 文件源码

private Request createRequest(String userID, Set<String> extraFields, Session session) {
    Request request = Request.newGraphPathRequest(session, userID + "/friends", null);

    Set<String> fields = new HashSet<String>(extraFields);
    String[] requiredFields = new String[]{
            ID,
            NAME
    };
    fields.addAll(Arrays.asList(requiredFields));

    String pictureField = adapter.getPictureFieldSpecifier();
    if (pictureField != null) {
        fields.add(pictureField);
    }

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

    return request;
}