I have dropdownbutton and items coming dynamic list thats perfectly works. i can show all list item but when i select someone my value doesn't change on the screen. just entry.first write doesn't change to which is selected. when i check on the terminal i can see the selected item so set state method works but initialvalue doesn't change.
my dropdown button
String dropdownvalue = entry.first;
var items =entry;
DropdownButton(
// Initial Value
value: dropdownvalue,
// Down Arrow Icon
icon: const Icon(Icons.keyboard_arrow_down),
// Array list of items
items: items.map((dynamic items) {
return DropdownMenuItem(
value: items,
child: Text(items),
);
}).toList(),
// After selecting the desired option,it will
// change button value to selected value
onChanged: (dynamic newvalue) {
setState(() {
dropdownvalue = newvalue; > **this not working**
print(dropdownvalue); > **it gives the newvalue**
});
},
),
CodePudding user response：
It seems that your issue is related to the way how you have declared the dropdownvalue and items list.
Please check this dartpad out. Here I'm using you code with some modifications for the declaration of items list and dropdownvalue.