shihaohong

import 'package:flutter/material.dart';

final Color darkBlue = Color.fromARGB(255, 18, 32, 47);

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override

shihaohong

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(

shihaohong

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

const List<String> items = <String>[
  'one',
  'two',
  'three',

shihaohong

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: MyHomePage(),
    );

shihaohong

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  static const String _title = 'Flutter Code Sample';

  @override

shihaohong

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Sample',
      home: Scaffold(

shihaohong

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Sample',
      home: Scaffold(

shihaohong

import 'package:flutter/material.dart';

void main() {
  runApp(MaterialApp(
    home: Scaffold(
      appBar: AppBar(
        title: Text('DropdownButton'),
      ),
      body: Padding(
        padding: EdgeInsets.all(16.0),

shihaohong

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(

shihaohong

// Flutter code sample for

// This sample shows a `DropdownButton` with a customized icon, text style,
// and underline and whose value is one of "One", "Two", "Free", or "Four".
//
// ![A screenshot of the dropdown button](https://flutter.github.io/assets-for-api-docs/assets/material/dropdown_button.png)

import 'package:flutter/material.dart';

void main() => runApp(MyApp());