Flutter TabBar&PageView(自定义联动效果)

Preview:

DINGTALK_IM_2894794293.JPG.JPG

Source code:

class HomeState extends State<MyHomePage> with SingleTickerProviderStateMixin {
  TabController mTabController;
  PageController mPageController = PageController(initialPage: 0);
  List<String> tabList = ['推荐', '热点', '社会', '娱乐', "体育", '美文', '科技', '财经', '时尚'];
  var currentPage = 0;
  var isPageCanChanged = true;

  @override
  void initState() {
    super.initState();
    mTabController = TabController(
      length: tabList.length,
      vsync: this,
    );
    mTabController.addListener(() {
      if (mTabController.indexIsChanging) {
        print(mTabController.index);
        onPageChange(mTabController.index, p: mPageController);
      }
    });
  }

  onPageChange(int index, {PageController p, TabController t}) async {
    if (p != null) {
      isPageCanChanged = false;
      await mPageController.animateToPage(index,
          duration: Duration(milliseconds: 500),
          curve: Curves.ease); //等待pageview切换完毕,再释放pageivew监听
      isPageCanChanged = true;
    } else {
      mTabController.animateTo(index);
    }
  }

  @override
  void dispose() {
    super.dispose();
    mTabController.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('TabBar & PageView'),
      ),
      body: Column(
        children: <Widget>[
          Container(
            color: Color(0xfff4f5f6),
            height: 38.0,
            child: TabBar(
              isScrollable: true,
              controller: mTabController,
              labelColor: Colors.red,
              unselectedLabelColor: Color(0xff666666),
              labelStyle: TextStyle(fontSize: 16.0),
              tabs: tabList.map((item) {
                return Tab(
                  text:item,
                );
              }).toList(),
            ),
          ),
          Expanded(
            child: PageView.builder(
              itemCount: tabList.length,
              onPageChanged: (index) {
                if (isPageCanChanged) {
                  onPageChange(index);
                }
              },
              controller: mPageController,
              itemBuilder: (BuildContext context, int index) {
                return Center(
                  child: Text(
                    tabList[index],
                    textScaleFactor: 2,
                  ),
                );
              },
            ),
          )
        ],
      ),
    );
  }
}