我正在尝试使用 SliverApp 栏在我的应用程序中实现折叠工具栏,但问题是当 SliverAppBar 折叠时 SliverAppBar 与我的内容重叠,我附上 gif 以供更多理解,
绿色背景中的内容位于工具栏下方,我想避免这种情况,感谢任何线索。
@override
Widget build(BuildContext context) {
// TODO: implement buildr
var _tabs = {"1", "2", "3"};
return Scaffold(
backgroundColor: Colors.white,
body: NestedScrollView(
headerSliverBuilder: (BuildContext context, bool innerBoxIsScrolled) {
return <Widget>[
SliverOverlapAbsorber(
handle:
NestedScrollView.sliverOverlapAbsorberHandleFor(context),
child: SliverAppBar(
expandedHeight: 250.0,
floating: false,
pinned: true,
flexibleSpace: FlexibleSpaceBar(
centerTitle: true,
background: Container(
decoration: BoxDecoration(
shape: BoxShape.rectangle,
image: DecorationImage(
fit: BoxFit.fill,
image: CachedNetworkImageProvider(
newsPost.photos[0].url),
),
),
)),
forceElevated: innerBoxIsScrolled,
))
];
},
body: SafeArea(
top: false,
bottom: false,
child: Builder(
builder: (BuildContext context) {
return CustomScrollView(
slivers: <Widget>[
SliverOverlapInjector(
handle: NestedScrollView.sliverOverlapAbsorberHandleFor(
context),
),
SliverPadding(
padding: const EdgeInsets.all(8.0),
sliver: SliverFillRemaining(child: _getBody()),
),
],
);
},
),
)),
);
}
最佳答案
我认为你应该使用 SliverList
而不是 SliverFillRemaining
.
body: SafeArea(
top: false,
bottom: false,
child: Builder(
builder: (BuildContext context) {
return CustomScrollView(
shrinkWrap: true,
slivers: <Widget>[
SliverOverlapInjector(
handle: NestedScrollView.sliverOverlapAbsorberHandleFor(
context),
),
SliverPadding(
padding: const EdgeInsets.all(0.0),
sliver: SliverList(
delegate: SliverChildBuilderDelegate((context, index) {
return Text('Lorem ipsum dolor sit');
}, childCount: 1),
),
),
],
);
},
),
)
关于flutter - 在 Flutter 中实现折叠工具栏,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/56820276/