protected override void OnCreate(Bundle bundle)
        {
            base.OnCreate(bundle);

            // Set our view from the "main" layout resource
            SetContentView(Resource.Layout.activity_main);

            Dictionary <string, Type> listDictionary = new Dictionary <string, Type> {
                { "Folder Structure Example", typeof(FolderStructureFragment) },
                { "Custom Holder Example", typeof(CustomViewHolderFragment) },
                { "Selectable Nodes", typeof(SelectableTreeFragment) },
                { "2d scrolling", typeof(TwoDScrollingArrowExpandFragment) },
                { "Expand with arrow only", typeof(TwoDScrollingFragment) },
            };
            var                list     = listDictionary.Keys.ToList();
            ListView           listview = FindViewById <ListView>(Resource.Id.listview);
            SimpleArrayAdapter adapter  = new SimpleArrayAdapter(this, list);

            listview.Adapter    = adapter;
            listview.ItemClick += (sender, e) => {
                Type   selectType = listDictionary.Values.ToArray()[e.Position];
                Intent i          = new Intent(this, typeof(SingleFragmentActivity));
                i.PutExtra(SingleFragmentActivity.FRAGMENT_PARAM, FragmentJavaName(selectType));
                StartActivity(i);
            };
        }
        protected override void OnCreate(Bundle savedInstanceState)
        {
            base.OnCreate(savedInstanceState);
            SetContentView(Resource.Layout.activity_using_basic);

            var toolbar = FindViewById <Toolbar>(Resource.Id.toolbar);

            toolbar.NavigationClick += (sender, e) => { Finish(); };

            var listView = FindViewById <ListView>(Resource.Id.listview);

            listView.Adapter = mAdapter = new SimpleArrayAdapter(this);

            var refreshLayout = FindViewById(Resource.Id.refreshLayout) as IRefreshLayout;

            refreshLayout.SetEnableAutoLoadmore(true);//开启自动加载功能(非必须)
            refreshLayout.SetOnRefreshListener(new SimpleOnRefreshListener(this));
            refreshLayout.SetOnLoadmoreListener(new SimpleOnLoadmoreListener(this));

            //触发自动刷新
            refreshLayout.AutoRefresh();
        }