kitoko552

class _MyHomePageState extends State<MyHomePage> {
  TextEditingController controllerA = TextEditingController();
  TextEditingController controllerB = TextEditingController();
  FocusNode nodeA = FocusNode();
  FocusNode nodeB = FocusNode();

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

kitoko552

DefaultTabController(
 length: _tabs.length, // This is the number of tabs.
 child: NestedScrollView(
   headerSliverBuilder: (BuildContext context, bool innerBoxIsScrolled) {
     return <Widget>[
       SliverOverlapAbsorber(
         handle: NestedScrollView.sliverOverlapAbsorberHandleFor(context),
         child: SliverAppBar(
           title: const Text('Books'), // This is the title in the app bar.
           pinned: true,

kitoko552

CustomScrollView(
 slivers: <Widget>[
   ...headerSliverBuilder(context, bodyIsScrolled),
   SliverFillRemaining(child: body),
 ],
);

kitoko552

Scaffold(
 appBar: AppBar(title: const Text('Books'), elevation: 0.0), // ScaffoldのappBarに普通のAppBarをセット
 body: DefaultTabController(
   length: _tabs.length,
   child: NestedScrollView(
     headerSliverBuilder: (BuildContext context, bool innerBoxIsScrolled) {
       return <Widget>[
         // SliverAppBarを削除
       ];
     },

kitoko552

Scaffold(
 appBar: AppBar(title: const Text('Books'), elevation: 0.0),
 body: DefaultTabController(
   length: _tabs.length,
   child: NestedScrollView(
     headerSliverBuilder: (BuildContext context, bool innerBoxIsScrolled) {
       return <Widget>[
         // TabBarを追加
         SliverPersistentHeader(
           pinned: true,

kitoko552

class _StickyTabBarDelegate extends SliverPersistentHeaderDelegate {
 const _StickyTabBarDelegate(this.tabBar);

 final TabBar tabBar;

 @override
 double get minExtent => tabBar.preferredSize.height;

 @override
 double get maxExtent => tabBar.preferredSize.height;

kitoko552

Scaffold(
 appBar: AppBar(title: const Text('Books'), elevation: 0.0),
 body: DefaultTabController(
   length: _tabs.length,
   child: NestedScrollView(
     headerSliverBuilder: (BuildContext context, bool innerBoxIsScrolled) {
       return <Widget>[
         // AppBarとTabBarの間のコンテンツ
         SliverList(
           delegate: SliverChildListDelegate(

kitoko552

final controller = ScrollController();
final globalKey = GlobalKey();

ListView.builder(
  controller: controller,
  itemBuilder: (context, index) {
    return SomeWidget(
      key: globalKey,
      child: child,
    );

kitoko552

final controller = AutoScrollController();

ListView.builder(
 controller: controller,
 itemCount: _maxItemCount,
 itemBuilder: (context, index) {
   return AutoScrollTag(
     key: ValueKey(index),
     controller: controller,
     index: index,

kitoko552

final controller = IndexedScrollController();

IndexedListView.builder(
 controller: controller,
 itemBuilder: (context, index) {
   return child;
 },
);

// スクロール処理