anchor.diff:          selectType = trendType(context)[0];
         });
         _showRefreshLoading();
  +    } else {
  +      if (selectTimeIndex >= 0) {
  +        selectTime = trendTime(context)[selectTimeIndex];
  +      }
  +      if (selectTypeIndex >= 0) {
  +        selectType = trendType(context)[selectTypeIndex];
  +      }
  +      setState(() {});
       }
       super.didChangeDependencies();
     }
   
     ///空页面
     Widget _buildEmpty() {
  -    var statusBar =
  -        MediaQueryData.fromWindow(WidgetsBinding.instance.window).padding.top;
  -    var bottomArea = MediaQueryData.fromWindow(WidgetsBinding.instance.window)
  -        .padding
  -        .bottom;
  -    var height = MediaQuery.of(context).size.height -
  -        statusBar -
  -        bottomArea -
  -        kBottomNavigationBarHeight -
  -        kToolbarHeight;
  +    var statusBar = MediaQueryData.fromWindow(WidgetsBinding.instance.window).padding.top;
  +    var bottomArea = MediaQueryData.fromWindow(WidgetsBinding.instance.window).padding.bottom;
  +    var height = MediaQuery.of(context).size.height - statusBar - bottomArea - kBottomNavigationBarHeight - kToolbarHeight;
       return SingleChildScrollView(
         child: new Container(
           height: height,
  
positive.code:   _renderItem(e) {
      ReposViewModel reposViewModel = ReposViewModel.fromTrendMap(e);
      return new ReposItem(reposViewModel, onPressed: () {
        NavigatorUtils.goReposDetail(
            context, reposViewModel.ownerName, reposViewModel.repositoryName);
      });
    }
  
  
negative.code:           children: <Widget>[
              FlatButton(
                onPressed: () {},
                child: new Image(image: new AssetImage(GSYICons.DEFAULT_USER_ICON), width: 70.0, height: 70.0),
              ),
              Container(
                child: Text(GSYLocalizations.i18n(context).app_empty, style: GSYConstant.normalText),
              ),
            ],
          ),
  