最佳答案
您可以改为创建自己的PopUp Widget
。
将Card
包装为具有特定尺寸的AnimatedContainer
和内部的ListView
。
使用Stack
和Positioned
小部件将此小部件放置在屏幕上,使其位于顶部的其他元素之上。对。
class CustomPopup extends StatefulWidget {
CustomPopup({
@required this.show,
@required this.items,
@required this.builderFunction,
});
final bool show;
final List<dynamic> items;
final Function(BuildContext context, dynamic item) builderFunction;
@override
_CustomPopupState createState() => _CustomPopupState();
}
class _CustomPopupState extends State<CustomPopup> {
@override
Widget build(BuildContext context) {
return Offstage(
offstage: !widget.show,
child: AnimatedContainer(
duration: Duration(milliseconds: 300),
height: widget.show ? MediaQuery.of(context).size.height / 3 : 0,
width: MediaQuery.of(context).size.width / 3,
child: Card(
elevation: 3,
child: MediaQuery.removePadding(
context: context,
removeTop: true,
child: ListView.builder(
scrollDirection: Axis.vertical,
itemCount: widget.items.length,
itemBuilder: (context, index) {
Widget item = widget.builderFunction(
context,
widget.items[index],
);
return item;
},
),
),
),
),
);
}
}
return Stack(
children: <Widget>[
Container(
color: Colors.blueAccent,
),
Positioned(
right: 0,
top: 60,
child: CustomPopup(
show: shouldShow,
items: [1, 2, 3, 4, 5, 6, 7, 8],
builderFunction: (context, item) {
return ListTile(
title: Text(item.toString()),
onTap: () {}
);
},
),
),
],
);
关于dart - 可滚动的 flutter 弹出菜单,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/51644300/