myanmar_administrative_areas 0.0.9

Myanmar Administrative Areas, myanmar villages, myanmar townships, myanmar district, myanmar towns

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:myanmar_administrative_areas/myanmar_administrative_areas.dart';

void main() {
  runApp(const MainApp());
}

class MainApp extends StatefulWidget {
  const MainApp({super.key});

  @override
  State<MainApp> createState() => _MainAppState();
}

class _MainAppState extends State<MainApp> {
  String? selectedValue1;
  String? selectedValue2;
  String? selectedValue3;

  List<String> items2 = [];
  List<String> items3 = [];
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Dropdown Example'),
        ),
        body: Padding(
          padding: const EdgeInsets.all(32.0),
          child: Column(
            mainAxisAlignment: MainAxisAlignment.start,
            children: [
              buildDropdown1(),
              const SizedBox(height: 16),
              buildDropdown2(),
              const SizedBox(height: 16),
              buildDropdown3(),
              const SizedBox(
                height: 30.0,
              ),
              Row(
                children: [
                  Expanded(
                    child: FilledButton(
                        onPressed: () => {}, child: const Text("ပြီးပါပြီ")),
                  ),
                  const SizedBox(
                    height: 50.0,
                  ),
                ],
              ),
              (selectedValue1 != null &&
                      selectedValue2 != null &&
                      selectedValue3 != null)
                  ? Text(
                      "$selectedValue1\n$selectedValue2 မြို့နယ် \n$selectedValue3 ကျေးရွာ",
                      style: const TextStyle(fontSize: 20.0),
                      textAlign: TextAlign.center,
                    )
                  : Container()
            ],
          ),
        ),
      ),
    );
  }

  Widget buildDropdown1() {
    return DropdownButtonFormField<String>(
      value: selectedValue1,
      hint: const Text('ပြည်နယ် နှင့် တိုင်းရွေးပါ'),
      onChanged: (String? value) {
        setState(() {
          selectedValue1 = value!;
          selectedValue2 = townshipsAsDivisionMy[selectedValue1]![0];
          selectedValue3 = '';
          items2 = townshipsAsDivisionMy[selectedValue1]!;
          items3 = [];
        });
      },
      items: divisionMy.map((String item) {
        return DropdownMenuItem<String>(
          value: item,
          child: Text(item),
        );
      }).toList(),
    );
  }

  Widget buildDropdown2() {
    return DropdownButtonFormField<String>(
      value: selectedValue2,
      hint: const Text('မြို့နယ်ရွေးပါ'),
      onChanged: (String? value) {
        setState(() {
          selectedValue2 = value!;
          selectedValue3 = villagesAsTownshipMy[selectedValue2]![0];
          items3 = villagesAsTownshipMy[selectedValue2]!;
        });
      },
      items: items2.map((String item) {
        return DropdownMenuItem<String>(
          value: item,
          child: Text("$item မြို့နယ်"),
        );
      }).toList(),
    );
  }

  Widget buildDropdown3() {
    return DropdownButtonFormField<String>(
      value: selectedValue3,
      hint: const Text('ကျေးရွာ ရွေးချယ်ပါ'),
      onChanged: (String? value) {
        setState(() {
          selectedValue3 = value!;
        });
      },
      items: items3.map((String item) {
        return DropdownMenuItem<String>(
          value: item,
          child: Text("$item ကျေးရွာ"),
        );
      }).toList(),
    );
  }
}