通过选择一个选项并提交，我更改了排序值，然后我使用所选值调用 getDataDb 函数，但它不起作用
showModalBottomSheet(
isScrollControlled: true, // required for min/max child size
context: context,
builder: (ctx) {
return MultiSelectBottomSheet(
title:
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text("Select Category for filtering",textAlign: TextAlign.center,),
],
),
// Center(
// child:
// Text("Select Category for filtering",textAlign: TextAlign.center,),
// ),
listType: MultiSelectListType.CHIP,
items: _items,
initialValue: [],
onConfirm: (values) {
setState(() {
sort = "yes";
});
_getDataDb(sort);
setState(() {
});
},
maxChildSize: 0.8,
);
},
);
这是完整代码
class RecentPost extends StatefulWidget {
const RecentPost({super.key});
@override
State<RecentPost> createState() =>
_RecentPostState();
}
class Cat {
final int id;
final String name;
Cat({
required this.id,
required this.name,
});
}
class _RecentPostState
extends State<RecentPost> {
Query _query = FirebaseFirestore.instance.collection('Posts');
String sort = "";
void initState() {
super.initState();
_getDataDb(sort);
}
final _textController = TextEditingController();
static List<Cat> _cats = [
Cat(id: 1, name: "Vehicles"),
Cat(id: 2, name: "Mobile"),
Cat(id: 3, name: "Property"),
Cat(id: 4, name: "Electrics"),
Cat(id: 5, name: "Bikes"),
Cat(id: 6, name: "Services"),
Cat(id: 7, name: "Fashion"),
Cat(id: 8, name: "Appliances"),
Cat(id: 9, name: "Stores"),
Cat(id: 10, name: "Rickshaw"),
];
final _items = _cats
.map((cats) => MultiSelectItem<Cat>(cats, cats.name))
.toList();
@override
_getDataDb(sort) async {
if(sort == "yes"){
_query = await _query.orderBy('price',descending: false);
}
else{
_query = await _query.orderBy('publish_date',descending: true);
}
// return _query;
}
Widget build(BuildContext context) {
return Scaffold(
drawerEnableOpenDragGesture: false,
appBar: AppBar(
actions:[
Builder(builder: (context) =>
Padding(padding: EdgeInsets.only(right: 10),
child:
Row(
mainAxisAlignment: MainAxisAlignment.end,
children: [
Text("Sort",style: TextStyle(fontSize: 12,fontWeight: FontWeight.bold),),
SizedBox(width: 5,),
IconButton(onPressed: (){
showModalBottomSheet(
context: context,
backgroundColor: Colors.transparent,
builder: (BuildContext bc) {
return Container(
width: 100,
color: Colors.transparent,
child: Padding(
padding: const EdgeInsets.fromLTRB(20, 0, 20, 0),
child: Container(
color: Colors.white,
width: 100,
child: new Wrap(
children: <Widget>[
Padding(
padding: EdgeInsets.only(
top: 20,
left: 20,
bottom: 10,
right: 20),
child: Row(children: <Widget>[
Expanded(child: Divider()),
SizedBox(
width: 10,
),
Text(
"Sort list",
style: TextStyle(
fontWeight: FontWeight.bold),
),
SizedBox(
width: 10,
),
Expanded(child: Divider()),
]),
),
new ListTile(
leading:
Wrap(
spacing: 0, // space between two icons
children: <Widget>[
Icon(Icons.arrow_downward_sharp,size: 20,color: Colors.indigoAccent,), // icon-1
Icon(Icons.attach_money_sharp,size: 20,color: Colors.indigoAccent,), // icon-2
],
),
// new Icon(Icons.p,
// color: Colors.indigoAccent),
title: new Text(
'Lowest price',
style: TextStyle(fontSize: 14),
),
onTap: () => {
},
),
new ListTile(
leading:
Wrap(
spacing: 0, // space between two icons
children: <Widget>[
Icon(Icons.arrow_upward_sharp,size: 20,color: Colors.indigoAccent,), // icon-1
Icon(Icons.attach_money_sharp,size: 20,color: Colors.indigoAccent,), // icon-2
],
),
title: new Text(
'Highest price',
style: TextStyle(fontSize: 14),
),
onTap: () => {
},
),
],
),
),
),
);
});
},
icon: Icon(Icons.sort,size: 20,),),
SizedBox(width: 10,),
Text("|",style: TextStyle(fontSize: 12,fontWeight: FontWeight.bold),),
SizedBox(width: 15,),
Text("Filter",style: TextStyle(fontSize: 12,fontWeight: FontWeight.bold),),
SizedBox(width: 5,),
IconButton(onPressed: (){
showModalBottomSheet(
isScrollControlled: true, // required for min/max child size
context: context,
builder: (ctx) {
return MultiSelectBottomSheet(
title:
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text("Select Category for filtering",textAlign: TextAlign.center,),
],
),
// Center(
// child:
// Text("Select Category for filtering",textAlign: TextAlign.center,),
// ),
listType: MultiSelectListType.CHIP,
items: _items,
initialValue: [],
onConfirm: (values) {
setState(() {
sort = "yes";
});
_getDataDb(sort);
setState(() {
});
},
maxChildSize: 0.8,
);
},
);
},
icon: Icon(Icons.filter_alt_outlined,size: 20,),),
],
)
))],
),
body:
Column(
children: [
Expanded(
child:
FirestorePagination(
viewType: ViewType.list,
bottomLoader: const Center(
child: CircularProgressIndicator(
strokeWidth: 3,
color: Colors.blue,
),
),
isLive: false,
scrollDirection: Axis.vertical,
limit: 10,
query: _query,
itemBuilder: (context, documentSnapshot, index) {
final data = documentSnapshot.data() as Map<String, dynamic>;
return
Card(
// clipBehavior: Clip.antiAlias,
child:
InkWell(
onTap: (){
},
child:
Container(
width: 100,
height: 100,
padding: const EdgeInsets.only(left: 10),
child: Row(children: [
Container(
width: 100,
height: 80,
child:
ClipRRect(
borderRadius: BorderRadius.only(topRight: Radius.circular(15.0),topLeft: Radius.circular(15.0),bottomRight: Radius.circular(15.0),bottomLeft: Radius.circular(15.0)),
child:
CachedNetworkImage(
imageUrl: data['photo_0'],
imageBuilder: (context, imageProvioder) {
return Container(
decoration: BoxDecoration(
image: DecorationImage(image: imageProvioder, fit: BoxFit.cover),
),
);
},
placeholder: (context, url) => Container(
height: 250,
width: 164,
child: Center(
child: CircularProgressIndicator(
color: Colors.green,
),
),
),
errorWidget: (context, url, error) => Icon(Icons.error),
),
)
),
Spacer(
flex: 1,
),
Expanded(
flex: 30,
child: Container(
padding: const EdgeInsets.only(top: 5),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisAlignment: MainAxisAlignment.start,
children: <Widget>[
Text("Rs " +
data['price'].toString(),
style: TextStyle(
fontSize: 14.0,
fontWeight: FontWeight.w700,
)),
SizedBox(height: 5,),
Row(
children: <Widget>[
Flexible(child:
Text(
data['title'],overflow: TextOverflow.ellipsis,
style: TextStyle(fontSize: 12,fontWeight: FontWeight.w600),
)),
],
),
SizedBox(height: 5,),
Row(
children: <Widget>[
Text(
data['address'],
style: TextStyle(fontSize: 10),
),
],
),
SizedBox(height: 5,),
Row(
children: [
Icon(Icons.watch_later_outlined, size: 10,),
SizedBox(width: 5,),
Text(ymwdhms(data['publish_date'].toDate()), style: TextStyle(
fontSize: 8,
fontWeight: FontWeight.bold),),
],
)
],
),
),
),
]),
),
),
);
},
),
),
],
),
);
}
}
我相信您的值未从
showModalBottomSheetStatefulBuildershowModalBottomSheet