如何删除选项卡下面的空白区域

如何解决如何删除选项卡下面的空白区域

这是我的代码实现：

return Scaffold(
        appBar: CustomAppBar(
          scaffoldKey: widget.scaffoldKey,// icon: AppIcon.settings,// onActionpressed: onSettingIconpressed,onSearchChanged: (text) {
            setState(() {
              if (text.length > 0) {
                searching = true;
              } else {
                searching = false;
              }
            });
            state.filterByUsername(text);
          },),backgroundColor: Colors.white,body:
            // Column(children: [
            Refreshindicator(
                backgroundColor: Colors.white,onRefresh: () async {
                  HapticFeedback.selectionClick();
                  setState(() {
                    list3 = state2.getTweetList(authstate.usermodel);
                    list3.shuffle();
                    onlyImages.shuffle();
                  });
                  state.getDataFromDatabase();
                  return Future.value(true);
                },// mesto povise greed,i ispod search Boxa
                child: Column(
                  children: <Widget>[
                    CarouselSlider.builder(
                      itemCount: images.length,options: CarouselOptions(
                        // autoplayInterval: Duration(milliseconds: 30),autoplay: true,aspectRatio: 2.0,enlargeCenterPage: true,itemBuilder: (context,index) {
                        return Container(
                          child: Center(
                            child: (imageUrl != null)
                                ? Image.network(imageUrl)
                                : Placeholder(
                                    fallbackHeight: 200,fallbackWidth: double.infinity,// Center(
                            //     child: Image.network(images[index],//         fit: BoxFit.cover,width: 1000)
                          ),);
                      },SizedBox(
                      height: 5,Expanded(
                      // flex: 1,child: CustomScrollView(slivers: <Widget>[
                        SliverToBoxAdapter(
                            child: Container(
                                padding: EdgeInsets.only(top: 0),height: 30,margin: EdgeInsets.only(top: 5,bottom: 5),child: ListView(
                                    scrollDirection: Axis.horizontal,children: <Widget>[
                                      _tagItem('#DAJGI'),_tagItem('#Advertisements'),_tagItem('Animal'),_tagItem('Travel'),_tagItem('Happy'),_tagItem(
                                        'Art',]))),]),searching
                        ? ListView.separated(
                            addAutomaticKeepAlives: false,physics: BouncingScrollPhysics(),index) =>
                                _UserTile(user: list[index]),separatorBuilder: (_,index) => Divider(
                              color: Colors.transparent,height: 0,itemCount: list?.length ?? 0,)
                        : Expanded(
                            child: GridView.count(
                              crossAxisCount: 3,children:
                                  List.generate(onlyImages.length,(index) {
                                return GestureDetector(
                                    onTap: () {
                                      FeedModel model = onlyImages[index];
                                      onTweetpressed(context,model);
                                    },onLongPress: () {
                                      _createPopupContext;
                                      FeedModel model = onlyImages[index];
                                      onTweetpressed(context,child: Container(
                                      child: Card(
                                          child: onlyImages
                                                      .elementAt(index)
                                                      .imagesPath
                                                      .length >
                                                  0
                                              ? CachednetworkImage(
                                                  imageUrl: onlyImages
                                                      .elementAt(index)
                                                      .imagesPath[0],fit: BoxFit.cover,)
                                              :
                                              //Container()
                                              Center(
                                                  child: Text(onlyImages
                                                      .elementAt(index)
                                                      .description),)),));
                              }),],)))

结果：

解决方法

在您的专栏中，您有2个扩展小部件，因此您的标签可获得更多空间；

column(
  children:[
     CarouselSlider
     Expanded(
        // flex: 1,child: CustomScrollView // Your Tags )
     Expanded(
        child: GridView.count(  // Your Grid)
  ]
)

现在您可以删除Expanded和CustomScrollView和SliverToBoxAdapter

并使您的专栏如下所示

column(
  children:[
     CarouselSlider
     Container(  // Your Tags )
     Expanded(
        child: GridView.count(  // Your Grid)
  ]
)