Created
March 3, 2022 21:13
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import 'package:flutter/material.dart'; | |
import 'package:get/get.dart'; | |
class Controller extends GetxController { | |
var items = <String>['a'].obs; | |
var itemCurrent = 'a'.obs; | |
addItem(String item) => items.add(item); | |
} | |
void main() => runApp(GetMaterialApp(home: Home())); | |
class Home extends StatelessWidget { | |
final Controller c = Get.put(Controller()); | |
@override | |
Widget build(context) { | |
return Scaffold( | |
appBar: AppBar(), | |
body: MyDropdown(), | |
floatingActionButton: FloatingActionButton( | |
child: Icon(Icons.add), | |
onPressed: () { | |
c.addItem((c.items.length + 1).toString()); | |
})); | |
} | |
} | |
class MyDropdown extends StatelessWidget { | |
@override | |
Widget build(context) { | |
final Controller c = Get.find(); | |
return Obx(() => DropdownButton<String>( | |
icon: const Icon(Icons.arrow_drop_down), | |
value: c.itemCurrent.value, | |
items: c.items.map((String item) { | |
return DropdownMenuItem<String>( | |
value: item, | |
child: Text(item), | |
); | |
}).toList(), | |
onChanged: (item) { | |
c.itemCurrent.value = item!; | |
})); | |
} | |
} |
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