Android Facebook SDK 3.0 无需显式登录即可简单更新状态？

我想知道更新用户 Facebook 状态的最简单方法。我想简单地显示一个“共享”按钮。当用户触摸“共享”时：

1. 如果他们已经登录 Facebook，则会出现一个对话框，让他们可以选择在提交到 Facebook 之前编辑自己的帖子。

2. 如果他们尚未登录 Facebook，系统将提示登录，然后在成功登录后自动显示共享对话框。

有没有一种简单的方法可以做到这一点，或者我是否需要实现单独的 Facebook 登录流程？

所以我想我有一个非常干净的方法来做到这一点。我欢迎任何评论。

我正在发布我的整个 Facebook Manager 类，它负责登录并打开提要对话框：

public class ManagerFacebook
{
    private Activity mActivity;

    public void updateStatus(final String name, final String caption, final String description, final String link, final String urlPicture,
        final Activity activity, final ListenerShareFacebook listenerShareFacebook)
    {
        mActivity = activity;

        // start Facebook Login
        Session.openActiveSession(activity, true, new Session.StatusCallback()
        {
            // callback when session changes state
            public void call(final Session session, SessionState state, Exception exception)
            {
                if (session.isOpened())
                {
                    publishFeedDialog(name, caption, description, link, urlPicture, listenerShareFacebook);
                }

            }
        });
    }

    private void publishFeedDialog(String name, String caption, String description, String link, String urlPicture,
        final ListenerShareFacebook listenerShareFacebook)
    {
        Bundle params = new Bundle();
        params.putString("name", name);
        params.putString("caption", caption);
        params.putString("description", description);
        params.putString("link", link);
        params.putString("picture", urlPicture);

        Session session = Session.getActiveSession();

        WebDialog feedDialog = (new WebDialog.FeedDialogBuilder(mActivity, session, params)).setOnCompleteListener(new OnCompleteListener()
        {
            public void onComplete(Bundle values, FacebookException error)
            {
                if (error == null)
                {
                    // When the story is posted, echo the success
                    // and the post Id.
                    final String postId = values.getString("post_id");
                    if (postId != null)
                    {
                        listenerShareFacebook.onShareFacebookSuccess();
                    }
                    else
                    {
                        // User clicked the Cancel button
                        listenerShareFacebook.onShareFacebookFailure("Publish cancelled");
                    }
                }
                else if (error instanceof FacebookOperationCanceledException)
                {
                    // User clicked the "x" button
                    listenerShareFacebook.onShareFacebookFailure("Publish cancelled");
                }
                else
                {
                    // Generic, ex: network error
                    listenerShareFacebook.onShareFacebookFailure("Error posting story");
                }
            }

        }).build();
        feedDialog.show();
    }
}

另外，上面引用的是我的监听器接口，这样我就可以通知我的 Activity Facebook 相关内容：

public interface ListenerShareFacebook
{
    void onShareFacebookSuccess();

    void onShareFacebookFailure(String error);
}