i am a beginner of flutter.iam creating a DropdownButton to list the items.item was loading well on DropdownButton .but loading item selected not displayed at the DropdownButton i don't know. what i tried so far i attached below. what is the wrong here onChanged: (value) => setState(() => this.valueschoose = value,
DropdownButton<String>(
items: <String>['A', 'B', 'C', 'D'].map((String value) {
return DropdownMenuItem<String>(
value: value,
child: Text(value),
);
}).toList(),
onChanged: (value) => setState(() => this.valueschoose = value,
)),
you are missing this value
of dropdown button
DropdownButton<String>(
value: this.valueschoose,
items: <String>['A', 'B', 'C', 'D'].map((String value) {
return DropdownMenuItem<String>(
value: value,
child: Text(value),
);
}).toList(),
onChanged: (value) => setState(() => this.valueschoose = value,
)),
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