Dropdown Widget Example

  DropdownButtonHideUnderline(

child: DropdownButton2(
isExpanded: true,
hint: Row(
children: const [
Icon(
Icons.list,
size: 16,
color: Colors.yellow,
),
SizedBox(
width: 4,
),
Expanded(
child: Text(
'Select Item',
style: TextStyle(
fontSize: 14,
fontWeight: FontWeight.bold,
color: Colors.yellow,
),
overflow: TextOverflow.ellipsis,
),
),
],
),
items: items
.map((item) => DropdownMenuItem<String>(
onTap: () {
print('tapped ' + item);
appState.sendRequest(
intendedLocation: currentDestPlace,
vehicle: item);
},
value: item,
child: Text(
item,
style: const TextStyle(
fontSize: 14,
fontWeight: FontWeight.bold,
color: Colors.white,
),
overflow: TextOverflow.ellipsis,
),
))
.toList(),
value: selectedValue,
onChanged: (value) {
setState(() {
selectedValue = value as String;
});
},
icon: const Icon(
Icons.arrow_forward_ios_outlined,
),
iconSize: 14,
iconEnabledColor: Colors.yellow,
iconDisabledColor: Colors.grey,
buttonHeight: 40,
buttonWidth: 160,
buttonPadding:
const EdgeInsets.only(left: 14, right: 14),
buttonDecoration: BoxDecoration(
borderRadius: BorderRadius.circular(5),
border: Border.all(
color: Colors.black26,
),
color: Colors.blue,
),
buttonElevation: 2,
itemHeight: 40,
itemPadding:
const EdgeInsets.only(left: 14, right: 14),
dropdownMaxHeight: 200,
dropdownWidth: 200,
dropdownPadding: null,
dropdownDecoration: BoxDecoration(
borderRadius: BorderRadius.circular(14),
color: Colors.blue,
),
dropdownElevation: 8,
scrollbarRadius: const Radius.circular(40),
scrollbarThickness: 6,
scrollbarAlwaysShow: true,
offset: const Offset(-20, 0),
),
),

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