flutter ui

快速生成无状态模板

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Container(
      
    );
  }
}

快速生成有状态模板

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

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  @override
  Widget build(BuildContext context) {
    return Container(
      
    );
  }
}

1.MaterialApp

脚手架模板

 有状态

import 'package:flutter/material.dart';


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

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text("测试"),
        ),
        body:Center(child: Text('data'),)
      ),
    );
  }
}

2.Scaffold

 脚手架

3.AppBar

标题行

return Scaffold(
      appBar: AppBar(
        leading: IconButton(icon: Icon(Icons.arrow_back), onPressed: () {}),
        title: Text('AppBar'),
        actions: <Widget>[
          IconButton(icon: Icon(Icons.add), onPressed: () {}),
          IconButton(icon: Icon(Icons.add), onPressed: () {}),
        flexibleSpace: Container(
          color: Colors.red,
        ),
        bottom: PreferredSize(
          child: Container(
            height: 50,
             double.infinity,
            color: Colors.grey,
            child: Text('bottom'),
          ),
          preferredSize: Size(30, 100),
        ),
      ),
    ); 

4.文本框

new Text('文本框');

属性

 

 

监听一

 onChanged：每次改变接受文本的值

onSubmitted:每次按输入法的确定键接收一个值

监听二

输入框

new TextField(
      //
    );

 8.TabBar

unselectedLabelColor: 设置未被选中的标签颜色

indicatorColor:选中标签的下划线颜色

indicatorSize:选中下划线的长度

.主题

splashColor：水波纹颜色

.装饰盒子

decoration:BoxDecoration(

)

border:设置边框

borderRadius：圆角设置

borderShdow:阴影

..shape：形状

..gradient：渐变

image：

sizeBox

固定尺寸盒子

alignment

对齐

 

0.0表示居中

stack 

叠加

AspectRatio 设置宽高比

pageView 翻页

 ExpansionPanel 收缩面板

chip  

 ActionChip

FilterChip

ChoiceChip

 DataTable

 stepper

RefreshIndicator 下拉

TabBarView

 主题颜色