How to indent between DropdownButton and DropdownMenuItem in flutter - flutter

Question

I am using DropdownButton and I am facing the following error. When opening the DropdownMenuItem list, I do not have an indent from the button itself. That is, I need to get the padding between the button (DropdownButton) and the dropdown list (DropdownMenuItem) so that there is a distance. But so far I haven't been able to do it. How can you make an indent between them?
code
#override
Widget build(BuildContext context) {
return SizedBox(
width: widget.width,
child: DropdownButtonHideUnderline(
child: DropdownButton2(
items: List.generate(
widget.items.length,
(index) => DropdownMenuItem<String>(
value: widget.items[index],
child: Container(
decoration: BoxDecoration(
border: Border(
bottom: BorderSide(
color: Colors.white.withOpacity(0.1),
width: 1,
),
),
),
child: StatefulBuilder(
builder: (context, setStateSB) => GFCheckboxListTile(
value: _selectedTitles.contains(widget.items[index]),
onChanged: (bool selected) {
_onItemSelect(selected, index);
setStateSB(() {});
},
selected: selected,
title: Text(
widget.items[index],
style: constants.Styles.smallTextStyleWhite,
),
padding: const EdgeInsets.only(top: 12, bottom: 13),
margin: const EdgeInsets.only(right: 0, left: 0),
size: 22,
activeBgColor: constants.Colors.greyCheckbox,
activeBorderColor: constants.Colors.greyXMiddle,
inactiveBgColor: constants.Colors.greyCheckbox,
activeIcon: SvgPicture.asset(constants.Assets.checkboxIcon),
inactiveBorderColor: constants.Colors.greyXMiddle,
type: type,
),
),
),
),
),
hint: _selectedTitles.length > 1
? const Text('Selecte EV',
style: constants.Styles.bigBookTextStyleWhite)
: Text(_selectedTitles.join().toString(),
style: constants.Styles.bigBookTextStyleWhite),
value: selectedValue,
onChanged: (value) {
setState(() {
selectedValue = value as String;
});
},
icon: SvgPicture.asset(constants.Assets.arrowDropdown),
iconSize: 21,
buttonHeight: 27,
itemHeight: 47,
dropdownMaxHeight: 185,
dropdownWidth: 140,
dropdownDecoration: BoxDecoration(
borderRadius: BorderRadius.circular(8),
border: Border.all(
color: constants.Colors.purpleMain,
),
color: constants.Colors.greyDark),
selectedItemBuilder: (context) {
return widget.items.map(
(item) {
return Row(
children: [
widget.icon ?? const SizedBox(),
const SizedBox(width: 8),
Text(
item,
style: constants.Styles.bigBookTextStyleWhite,
),
],
);
},
).toList();
},
),
),
);
}
}

Answer 1

In the dropdown_button2 documentation, there is a property for moving the dropdown menu Offset. You can see it here https://pub.dev/documentation/dropdown_button2/latest/dropdown_button2/DropdownButton2/offset.html
On that property you just need to set an Offset, which is composed of an X and Y values.
In your case it would look something like this:
DropdownButton2(
offset: Offset(0,10),
...
),