Libgdx中的java Facebook共享

Question

我关注了facebook上关于sharinga链接的教程

    @Override
    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    uiHelper = new UiLifecycleHelper(this, callback);
    uiHelper.onCreate(savedInstanceState);
    }

并使用此界面在游戏中共享按钮

    @Override
    public void fbShare() {

    if (FacebookDialog.canPresentShareDialog(getApplicationContext(), 
    FacebookDialog.ShareDialogFeature.SHARE_DIALOG)) {
    // Publish the post using the Share Dialog
    FacebookDialog shareDialog = new FacebookDialog.ShareDialogBuilder(this)
    .setLink("https://play.google.com/store/apps/details?id=com.viralsoft.RocketBoost")
    .build();
    uiHelper.trackPendingDialogCall(shareDialog.present());

    } else {
    // Fallback. For example, publish the post using the Feed Dialog
    }
    }

当我按下facebook显示的共享按钮时，链接就在那里，我也可以写一些东西，但当我按下共享按钮时，它并没有贴在我的墙上。我遗漏了什么代码？我也想分享一下这场比赛的高分。我刚刚开始学习java编程，facebook sdk教程对我来说并不全面。谢谢