在后台线程中加载RecyclerView

Question

或者如何制作动画，加载RecyclerView？ 我使用示例中的RecyclerView，该片段中的基本实现。

public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
            {  mApplicationAlbum = new ApplicationAlbum();
            var view = inflater.Inflate(Resource.Layout.fragment1, container, false);
            mRecyclerView = view.FindViewById<RecyclerView>(Resource.Id.recyclerView);       
            mLayoutManager = new LinearLayoutManager(Activity);
           mRecyclerView.SetLayoutManager(mLayoutManager);
            mAdapter = new ApplicationAlbumAdapter(mApplicationAlbum);
            mAdapter.ItemClick += OnItemClick;           
           mRecyclerView.SetAdapter(mAdapter);

            var ignored = base.OnCreateView(inflater, container, savedInstanceState);
            return view;  }

适配器从json接收数据

            WebClient client = new WebClient();
            var json = client.DownloadString("http://....../application.php");                   
            Application[] mBuiltInApplication = JsonConvert.DeserializeObject<Application[]>(json);
            mApplications = mBuiltInApplication;

调用片段

          SupportFragmentManager.BeginTransaction()
         .Replace(Resource.Id.content_frame, Fragment1.NewInstance())         
          .Commit();

此解决方案效果很好。

我想解决该问题，如果从Json下载的时间较长，则应用程序挂起，用户界面无响应。

如何在屏幕上显示加载动画，而在后台线程中将加载json，并在成功下载后显示。

希望您能理解我想做什么。