颤振-在嵌套ScrollView中滚动/滑动TabBar时出现问题

颤振-在嵌套ScrollView中滚动/滑动TabBar时出现问题,scroll,flutter,dart,tabbar,nestedscrollview,Scroll,Flutter,Dart,Tabbar,Nestedscrollview,我实现了TabBar,其中TabbarView是动态的,除了NestedScrollView。当我想尝试滑动选项卡时,选项卡视图上的位置没有响应。即使我已将isScrollable设置为true 我的代码 @override Widget build(BuildContext context) { return ScopedModelDescendant<MainModel>( builder: (context, child, model) {

我实现了
TabBar
,其中
TabbarView
是动态的,除了
NestedScrollView
。当我想尝试滑动
选项卡时,
选项卡视图
上的位置没有响应。即使我已将isScrollable设置为true

我的代码

 @override
  Widget build(BuildContext context) {
    return ScopedModelDescendant<MainModel>(
      builder: (context, child, model) {
        return Scaffold(
          // backgroundColor: Colors.red,
          body: NestedScrollView(
              headerSliverBuilder:
                  (BuildContext context, bool innerBoxIsScrolled) {
                return [
                  SliverAppBar(
                    pinned: false,
                    backgroundColor: Colors.white,
                    flexibleSpace: FlexibleSpaceBar(
                      collapseMode: CollapseMode.pin,
                      background: Column(
                        crossAxisAlignment: CrossAxisAlignment.start,
                        children: <Widget>[
                          SizedBox(height: 5),
                          _buildBackBtn(context),
                          SizedBox(height: 20),
                          _buildCarouselLabel(),
                          SizedBox(height: 15),
                          Container(
                              margin: model.isLoadingKnowledge ||
                                      model.carouselList
                                              .where((carousel) =>
                                                  carousel.relationships
                                                      .category.attr.name ==
                                                  _selectedTab.attributes.name)
                                              .toList()
                                              .length ==
                                          0
                                  ? EdgeInsets.only(top: 60)
                                  : EdgeInsets.zero,
                              alignment: Alignment.center,
                              child: model.isLoadingKnowledge
                                  ? Center(child: CircularProgressIndicator())
                                  : model.carouselList
                                              .where((carousel) =>
                                                  carousel.relationships
                                                      .category.attr.name ==
                                                  _selectedTab.attributes.name)
                                              .toList()
                                              .length ==
                                          0
                                      ? Center(
                                          child: Text(
                                              "There is no carousel on ${_selectedTab.attributes.label}"))
                                      : KnowledgeImageSlider(_selectedTab)),
                          SizedBox(height: 15),
                        ],
                      ),
                    ),
                    expandedHeight: 380.0,
                    bottom: TabBar(
                      labelColor: Colors.grey[700],
                      unselectedLabelColor: Colors.grey[400],
                      controller: _tabController,
                      indicatorColor: Color(0xff3FBCD7),
                      indicatorSize: TabBarIndicatorSize.tab,
                      indicatorWeight: 3.0,
                      isScrollable: true,
                      labelStyle: TextStyle(
                          fontSize: 16,
                          height: 2.2,
                          fontWeight: FontWeight.w500,
                          color: Colors.white),
                      // indicator: ShapeDecoration(
                      //   // color: Colors.white,
                      //   shape: const StadiumBorder(
                      //         side: BorderSide(
                      //           color: Colors.white,
                      //           width: 2.0,
                      //         ),
                      //       ) +
                      //       const StadiumBorder(
                      //         side: BorderSide(
                      //           color: Colors.transparent,
                      //           width: 8.0,
                      //         ),
                      //       ),
                      // ),
                      tabs: model.knowledgeCategoryList
                          .map((cat) => Tab(text: cat.attributes?.label))
                          .toList(),
                    ),
                  )
                ];
              },
              body: model.isLoadingKnowledge
                  ? Center(child: CircularProgressIndicator())
                  : ListView.builder(
                      itemCount: model.knowledgeList
                          .where((article) =>
                              article.relationships.category.attr.label ==
                                  _selectedTab.attributes.label ??
                              "Picks")
                          .toList()
                          .length,
                      itemBuilder: (context, i) {
                        var article = model.knowledgeList
                            .where((article) =>
                                article.relationships.category.attr.label ==
                                    _selectedTab.attributes?.label ??
                                "PICKS")
                            .toList()[i];

                        return ArticleItemCard(article);
                      },
                    )),
        );
      },
    );
  }
@覆盖
小部件构建(构建上下文){
返回范围modeldescendant(
生成器:(上下文、子对象、模型){
返回脚手架(
//背景颜色:Colors.red,
正文:嵌套滚动视图(
班主任:
(BuildContext上下文,boolInnerBoxIsCrowled){
返回[
滑杆(
错,,
背景颜色:Colors.white,
flexibleSpace:FlexibleSpaceBar(
collapseMode:collapseMode.pin,
背景:专栏(
crossAxisAlignment:crossAxisAlignment.start,
儿童:[
尺寸箱(高度:5),
_buildBackBtn(上下文),
尺寸箱(高度:20),
_buildCarouselLabel(),
尺寸箱(高度:15),
容器(
页边距:model.isLoadingKnowledge||
模型旋转木马
。其中((旋转木马)=>
旋转木马
.category.attr.name==
_selectedTab.attributes.name)
托利斯先生()
.长度==
0
?仅限边缘设置(顶部:60)
:EdgeInsets.zero,
对齐:对齐.center,
子项:model.isLoadingKnowledge
?中心(子项:循环压缩机指示器())
:model.carouselList
。其中((旋转木马)=>
旋转木马
.category.attr.name==
_selectedTab.attributes.name)
托利斯先生()
.长度==
0
?中心(
子:文本(
“${u selectedTab.attributes.label}”上没有旋转木马)
:KnowledgeImageSlider(_selectedTab)),
尺寸箱(高度:15),
],
),
),
扩展高度:380.0,
底部:选项卡栏(
labelColor:颜色。灰色[700],
未选择的标签颜色:颜色。灰色[400],
控制器:\ tab控制器,
指示颜色:颜色(0xff3FBCD7),
指标化:TabBarIndicatorSize.tab,
指示器重量:3.0,
isScrollable:是的,
标签样式:文本样式(
尺寸:16,
身高:2.2,
fontWeight:fontWeight.w500,
颜色:颜色。白色),
//指标:形状装饰(
////颜色:Colors.white,
//形状:康斯特·斯塔迪翁博德(
//边线(
//颜色:颜色,白色,
//宽度:2.0,
//         ),
//       ) +
//康斯特斯塔迪翁博德酒店(
//边线(
//颜色:颜色。透明,
//宽度:8.0,
//         ),
//       ),
// ),
选项卡:model.knowledgeCategoryList
.map((cat)=>选项卡(文本:cat.attributes?.label))
.toList(),
),
)
];
},
正文:model.isLoadingKnowledge
?中心(子项:循环压缩机指示器())
:ListView.builder(
itemCount:model.knowledgeList
.其中((文章)=>
article.relationships.category.attr.label==
_已选择Tab.attributes.label??
“挑选”)
托利斯先生()
.长度,
itemBuilder:(上下文,i){
var article=model.knowledgeList
.其中((文章)=>
article.relationships.category.attr.label==
_已选择选项卡。属性?标签??
“挑选”)
.toList()[i];
退货物品卡片(物品);
},
)),
);
},
);
}
结果:

如何使其像平常一样滚动/滑动选项卡

如有任何答复,将不胜感激。