I am implementing a sort by function which displays sort options through a modal bottom sheet, I am able to do it in my "Home Page" widget. Would like to check if I can extract these codes and sub it as a widget for better organization. I am unable to do as I am concerned with the return values from the radio value.
Appreciate any help given, thanks!!
Here is my code:
child: TextButton.icon( // Button to press sort
onPressed: (() {
showModalBottomSheet( // show modal
shape: RoundedRectangleBorder(
borderRadius:
BorderRadius.circular(10.0)),
context: context,
builder: (BuildContext build) {
return Column(
mainAxisSize: MainAxisSize.min,
children: <Widget>[ // radio values
RadioListTile(
value: 1,
groupValue: selectedRadioTile,
title: Text(
"Case Earliest to Latest"),
onChanged: (val) {
print(
"Radio Tile pressed $val");
setSelectedRadioTile(val!);
print(selectedRadioTile);
Navigator.pop(context);
},
activeColor:
constants.secondaryBlueColour,
),
RadioListTile(
value: 2,
groupValue: selectedRadioTile,
title: Text(
"Case Latest to Earliest "),
onChanged: (val) {
print(
"Radio Tile pressed $val");
setSelectedRadioTile(val!);
print(selectedRadioTile);
Navigator.pop(context);
},
activeColor:
constants.secondaryBlueColour,
)
],
);
});
}),
icon: Icon(
Icons.sort,
size: 28,
color: constants.textGrayColour,
),
label: Text("Sort",
style: TextStyle(
color: constants.textGrayColour,
fontWeight: FontWeight.bold)))),***
Container(
margin: const EdgeInsets.only(top: 5),
width: MediaQuery.of(context).size.width * 0.5,
decoration: BoxDecoration(
border: Border(
left: BorderSide(
width: 2.0,
color:
constants.categoryButtonBackgroundColour),
bottom: BorderSide(
width: 2.0,
color:
constants.categoryButtonBackgroundColour),
)),
child: TextButton.icon(
onPressed: () {},
icon: Icon(Icons.filter_alt,
size: 28, color: constants.textGrayColour),
label: Text("Filter",
style: TextStyle(
color: constants.textGrayColour,
fontWeight: FontWeight.bold))),
),
],
),
I implemented a SortWidget() but am wondering how I can return the current radio value to my homepage and set the state in the homepage based on the radio value
CodePudding user response：
showModalBottomSheet is a future method, you can use async method for this. and Navigator.pop(context, value); will give you the result. you can also used callback method, seems not needed for your case.
onPressed:()async {
final value = await showModalBottomSheet(
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(10.0)),
context: context,
builder: (BuildContext build) {
return MyBottomSheetWidget(selectedRadioTile: selectedRadioTile);
},
);
print("$value");
}
class MyBottomSheetWidget extends StatelessWidget {
// make it statefulWidget if you want to update dialog ui
const MyBottomSheetWidget({
Key? key,
required this.selectedRadioTile,
}) : super(key: key);
final selectedRadioTile;
@override
Widget build(BuildContext context) {
return Column(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
// radio values
RadioListTile(
value: 1,
groupValue: selectedRadioTile,
title: Text("Case Earliest to Latest"),
onChanged: (val) {
print("Radio Tile pressed $val");
Navigator.pop(context, val);
},
),
RadioListTile(
value: 2,
groupValue: selectedRadioTile,
title: Text("Case Latest to Earliest "),
onChanged: (val) {
print("Radio Tile pressed $val");
// setSelectedRadioTile(val!);
print(selectedRadioTile);
Navigator.pop(context, val);
},
)
],
);
}
}
CodePudding user response：
showModalBottomSheet is actually a function which can't converted to widget without having some other widget in place. What you can do is, create a function which hold code of this showModalBottomSheet and call that function on button click.
But if you want to create a separate widget then you can create the widget from the internal code of the showModalBottomSheet which starts with return Column.
You need to create a widget which can take two properties which are int variable named selected and a Function named setSelected. Then you can call that widget from inside the showModalBottomSheet and pass two props from your page. This selected will be set as selectedRadioTile & setSelected will be set as setSelectedRadioTile.
Example Code
class BottomFilter extends StatelessWidget {
const BottomFilter(
{Key? key,
required this.selected,
required this.setSelected})
: super(key: key);
final int selected;
final Function setSelected;
@override
Widget build(BuildContext context) {
return Column(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
// radio values
RadioListTile(
value: 1,
groupValue: selected,
title: Text("Case Earliest to Latest"),
onChanged: (val) {
print("Radio Tile pressed $val");
setSelected(val!);
print(selected);
Navigator.pop(context);
},
activeColor: Colors.amber,
),
RadioListTile(
value: 2,
groupValue: selected,
title: Text("Case Latest to Earliest "),
onChanged: (val) {
print("Radio Tile pressed $val");
setSelected(val!);
print(selected);
Navigator.pop(context);
},
activeColor: Colors.amber,
)
],
);
}
}
Call it like this
builder: (BuildContext build) {
return BottomFilter(selected: selectedRadioTile, setSelected: setSelectedRadioTile);
})
Dartpad link to test this code https://dartpad.dev/?id=e75b493dae1287757c5e1d77a0dc73f1