huixiang_app/lib/community/community_page.dart

import 'package:flutter/material.dart';
import 'package:flutter_svg/flutter_svg.dart';
import 'package:huixiang/community/community_child_page.dart';
import 'package:huixiang/home/huixiang_brand_page.dart';
import 'package:huixiang/view_widget/my_appbar.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:huixiang/view_widget/my_tab.dart';

import 'community_course.dart';
import 'headlines/article_page.dart';

class CommunityPage extends StatefulWidget {
  @override
  State<StatefulWidget> createState() {
    return _CommunityPage();
  }
}

class _CommunityPage extends State<CommunityPage>
    with SingleTickerProviderStateMixin {
  TabController tabcontroller;

  List<String> lables = [
    "关注",
    "推荐",
    "头条",
    "课程",
    "关于我们",
    // "直播",
  ];

  @override
  void initState() {
    super.initState();

    if (tabcontroller == null)
      tabcontroller = TabController(length: lables.length, vsync: this, initialIndex: 1);
  }

  _toRelease() async {
    int tmpIndex = tabcontroller.index;
    setState(() {
      tabcontroller.index = (tabcontroller.index == lables.length -1)?0:tabcontroller.index+1;
    });
    var result = await Navigator.of(context).pushNamed('/router/release_dynamic');
    setState(() {
      tabcontroller.index = tmpIndex;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: MyAppBar(
        leading: false,
        titleChild: PreferredSize(
          preferredSize: Size(
            MediaQuery.of(context).size.width - 60,
            38.h,
          ),
          child: TabBar(
            controller: tabcontroller,
            automaticIndicatorColorAdjustment: true,
            isScrollable: true,
            indicatorWeight: 2,
            indicatorColor: Color(0xFF39B54A),
            labelPadding: EdgeInsets.only(left: 8.w, right: 8.w),
            indicatorSize: TabBarIndicatorSize.label,
            unselectedLabelStyle: TextStyle(
              fontSize: 15.sp,
              fontWeight: FontWeight.w400,
            ),
            labelStyle: TextStyle(
              color: Colors.black,
              fontSize: 18.sp,
              fontWeight: FontWeight.bold,
            ),
            labelColor: Colors.black,
            tabs: lables.map((e) => MyTab(text: e)).toList(),
          ),
        ),
        onTap: () {
          _toRelease();
        },
        action: SvgPicture.asset(
          "assets/svg/shequ_fabu.svg",
          fit: BoxFit.contain,
          width: 24,
          height: 24,
        ),
      ),
      body: Container(
        padding: EdgeInsets.only(bottom: 76.h),
        child: TabBarView(
          physics: BouncingScrollPhysics(),
          children: lables.map((e) {
            if (e == "关于我们") {
              return BrandPage();
            }else if(e == "头条"){
              return ArticlePage();
            }else if(e == "课程"){
              return CommunityCourse();
            }
            else {
              return CommunityChildPage(e);
            }
          }).toList(),
          controller: tabcontroller,
        ),
      ),
    );
  }
}