本文共 4784 字，大约阅读时间需要 15 分钟。

效果图：

这里主要是用了TabController这个controller，而不是用的默认的DefaultTabController，TabBar跟TabBarView必须关联起来，否则会报错。我这个上面的代码改得还有点多，因为还加入了listview，各位看官就暂时凑合着看吧。

源码贴出来

源码：

import 'dart:convert';import 'package:flutter/material.dart';import 'package:guoding/api/data_utils.dart';import 'package:guoding/model/topic_head_bean.dart';import 'package:guoding/resources/my_dimens.dart';import 'package:guoding/resources/mycolor_resources.dart';import 'package:guoding/routers/application.dart';import 'package:guoding/ui/home/top/topic_list_page.dart';import 'package:guoding/widgets/my_tab_indicator.dart';class MoreTopicPage extends StatefulWidget {
     @override  State
   
     createState() {
       return MoreTopicPageState();  }}class MoreTopicPageState extends State
    
         with TickerProviderStateMixin {
     bool hasTopLoad = false;  List
     
       mTabs = new List();  TabController _tabController;  int _selectedIndex;  @override  void initState() {
       super.initState();    _tabController = new TabController(length: mTabs.length, vsync: this);    _tabController.addListener(() {
         setState(() => _selectedIndex = _tabController.index);      print("liucheng-> ${_tabController.indexIsChanging}");    });    getTopicHorizatalData();  }  @override  void dispose() {
       super.dispose();    _tabController.dispose();  }  @override  Widget build(BuildContext context) {
       return new Scaffold(      body: SafeArea(        top: true,        child: Container(          child: Column(            crossAxisAlignment: CrossAxisAlignment.center,            children: 
      
       [              Container(                child: Row(                  mainAxisAlignment: MainAxisAlignment.spaceBetween,                  children: 
       
        [                    GestureDetector(                      onTap: () {
                           Application.router.pop(context);                      },                      child: Icon(                        Icons.arrow_back_ios,                        size: 20,                        color: MyColorRes.tvMainSelectColor,                      ),                    ),                    Text(                      '话题列表',                      style: TextStyle(                          fontSize: 20, color: MyColorRes.tvMainSelectColor),                    ),                    Icon(                      Icons.search,                      size: 30,                      color: MyColorRes.tvMainSelectColor,                    ),                  ],                ),                height: MyDimenRes.dp_title_height,                margin: EdgeInsets.only(                    left: MyDimenRes.dp_base_left,                    right: MyDimenRes.dp_base_right,                    ),                alignment: Alignment.bottomCenter,              ),              Divider(color: MyColorRes.divideLine,),              _buildRoot()            ],          ),          color: MyColorRes.bg_white,        ),      ),    );  }  Widget _buildRoot() {
       if (!hasTopLoad) {
         return Center(        child: Text('加载中...'),      );    } else {
         return Container(        color: MyColorRes.bgTagColor,          height: MediaQuery.of(context).size.height-100,        child: Column(          children: 
        
         [ Container( height: 46, child: TabBar( indicatorColor: MyColorRes.primaryColor, labelColor: MyColorRes.tvMainSelectColor, unselectedLabelColor: MyColorRes.tvMainUnSelectColor, unselectedLabelStyle: TextStyle(fontSize: 15), labelStyle: TextStyle(fontSize: 17), isScrollable: true, indicator: MyUnderlineTabIndicator(borderSide: BorderSide(width: 2.0, color: MyColorRes.primaryColor)), controller: _tabController, tabs: mTabs.map((value) { return Text(value.name); }).toList(), ), alignment: Alignment.centerLeft, color: MyColorRes.bg_white, ), Expanded( flex: 1, child: TabBarView( children: _buildPages(), controller: _tabController, ), ), ], ), ); } } List
         
           _buildPages() { List
          
            pages = List(); for (int i = 0; i < mTabs.length; i++) { Widget page = TopicListPage(mTabs[i].flId); pages.add(page); } return pages; } void getTopicHorizatalData() async { DataUtils.getTopicHorizatalists().then((value) { if (value != null) { var jsData = json.decode(value); int status = jsData['status']; var data = jsData['data']; TopicHeadBean headBean = TopicHeadBean.fromJson(jsonDecode(value)); print('${headBean.data.lists}'); mTabs.addAll(headBean.data.lists); if (mounted) { } setState(() { hasTopLoad = true; _tabController = new TabController(length: mTabs.length, vsync: this); }); } }).catchError((e) { print('eee getTopicHorizatalData $e'); }); }}
          
         
        
       
      
     
    
   

大神轻喷，本文参考掘金大神：

更多资源请访问：

欢迎关注「蛇崽网盘教程资源」公众号 ，在微信后台回复「领取资源」，获取IT资源200G干货大全。

在微信后台回复「130个小程序」，即可免费领取享有导入就能跑的微信小程序

在微信后台回复「Flutter移动电商」，即可免费领取Flutter移动电商系列全套

转载地址：https://blog.csdn.net/xudailong_blog/article/details/98967330 如侵犯您的版权，请留言回复原文章的地址，我们会给您删除此文章，给您带来不便请您谅解！