huixiang_app/lib/home/main_home_page.dart

import 'package:flutter/material.dart';
import 'package:huixiang/generated/l10n.dart';
import 'package:huixiang/home/activity_list_page.dart';
import 'package:huixiang/home/home_page.dart';
import 'package:huixiang/home/huixiang_brand_page.dart';
import 'package:huixiang/home/points_mall_page.dart';
import 'package:huixiang/view_widget/my_tab.dart';

class MainHomePage extends StatefulWidget {
  @override
  State<StatefulWidget> createState() {
    return _MainHomePage();
  }
}

class _MainHomePage extends State<MainHomePage>
    with SingleTickerProviderStateMixin, AutomaticKeepAliveClientMixin {
  var tabcontroller;
  List<Widget> _widgetOptions;

  @override
  void initState() {
    super.initState();
    if (tabcontroller == null)
      tabcontroller = TabController(length: 3, vsync: this);
    tabcontroller.addListener(() => () {});

    //NoDataView(),
    _widgetOptions = <Widget>[HomePage(), ActivityListPage(), PointsMallPage()];
  }

  @override
  Widget build(BuildContext context) {
    return DefaultTabController(
        length: 3,
        child: Scaffold(
          appBar: AppBar(
            backgroundColor: Color(0xFFFAFAFA),
            elevation: 0,
            toolbarOpacity: 0,
            toolbarHeight: 50,
            automaticallyImplyLeading: false,
            actions: [
              Container(
                margin: EdgeInsets.only(right: 17),
                child: GestureDetector(
                  onTap: () {
                    Navigator.of(context).pushNamed("/router/msg_page");
                  },
                  child: Image.asset(
                    "assets/image/icon_notices.png",
                    width: 24,
                    height: 24,
                  ),
                ),
              )
            ],
            title: TabBar(
                controller: tabcontroller,
                automaticIndicatorColorAdjustment: true,
                isScrollable: true,
                indicatorWeight: 2,
                indicatorColor: Color(0xFF39B54A),
                labelPadding: EdgeInsets.only(left: 8, right: 8),
                indicatorSize: TabBarIndicatorSize.label,
                unselectedLabelStyle: TextStyle(
                  fontSize: 16,
                  fontWeight: FontWeight.normal,
                ),
                labelStyle: TextStyle(
                  color: Colors.black,
                  fontSize: 17,
                  fontWeight: FontWeight.bold,
                ),
                labelColor: Colors.black,
                tabs: [
                  MyTab(text: S.of(context).shouye),
                  MyTab(
                    text: S.of(context).huodongliebiao,
                  ),
                  MyTab(
                    text: S.of(context).jifenshangcheng,
                  ),
                ]),
          ),
          body: TabBarView(
            children: _widgetOptions,
            controller: tabcontroller,
          ),
        ));
  }

  @override
  bool get wantKeepAlive => true;
}