包裹在折叠控件中，刷新后会自动折叠

[HeVTion]

Widget build(BuildContext context) {
return Scaffold(
backgroundColor: yello,
body: SafeArea(
child: NestedScrollView( //scrollview
controller: _scrollController,
headerSliverBuilder: (context, bool) { //头部折叠
return [
SliverAppBar(
expandedHeight: ScreenUtil.getInstance().setHeight(100),
pinned: false,
elevation: 0,
primary: false,
brightness: Brightness.light,
flexibleSpace: mySearch(),
// bottom: myTabBar(),
),
SliverPersistentHeader(
delegate: SliverTabBarDelegate(myTabBar(), color: Colors.white),
pinned: true,
floating: false,
),
];
},

刷新后，自动滑到顶部，折叠SliverAppBar

[peng8350]

代码详细点，smartrefresher还有child,还有nested里的_scrollController做了什么操作

[HeVTion]

NestedScrollView 放了 headerSliverBuilder

SafeArea(
child: NestedScrollView(
controller: _scrollController,
headerSliverBuilder: (context, bool) {
return [
SliverAppBar(
expandedHeight: ScreenUtil.getInstance().setHeight(100),
pinned: false,
elevation: 0,
primary: false,
brightness: Brightness.light,
flexibleSpace: mySearch(),
// bottom: myTabBar(), ///tabbar 会悬浮于顶部
),
SliverPersistentHeader(
delegate: SliverTabBarDelegate(myTabBar(), color: Colors.white),
pinned: true,
floating: false,
),
];
},
body: Container(
color: Colors.white,
padding: EdgeInsets.all(0),
child: TabBarView(controller: _tabController, children: [
myPage(),
myPage(),
myPage(),
myPage(),
myPage(),
myPage(),
myPage(),
myPage(),
myPage(),
myPage(),
myPage(),
myPage(),
]),
),
))

///smartrefresher 中放了ListView.builder ，
myPage() {
return SmartRefresher(
child: ListView.builder(
padding: EdgeInsets.all(0),
itemBuilder: (BuildContext context, int i) {
return Container(
color: Colors.white,
padding: EdgeInsets.only(left: 15, right: 15, top: 15),
child: FractionallySizedBox(
child: i % 2 == 1 ? listA(mData[i]) : listB(mData[i]),
));
},
itemCount: mData.length,
),
controller: _refreshController,
);
}

///_scrollController 什么也没做。

因为，也就是说nested上有个head可以被折叠，滑动到顶部后显示， 使用smart之后没有滑动到顶部，直接折叠了head

[peng8350]

我没看出来哪里有问题啊,你可以对比一下这里的例子,看看哪里有问题

[JamesGZM]

我没看出来哪里有问题啊,你可以对比一下这里的例子,看看哪里有问题

加了 scrollController 就会有问题