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vs code运行 flutter flutter插件、dart插件

flutter run r键更新 p键网格 o键切换ios Android模式 q键关闭 开启debug模式,可热更新

vs code 右下角可安装、打开模拟器

import 'package:flutter/material.dart'; void main() => runApp(MyApp());

class MyApp extends StatelessWidget { @override Widget build(BuildContext context) { return MaterialApp( title: 'flutter', home: Scaffold( body: Center( child: Text('Hello Dart!') ), ), ); } }

对齐方式 ###textAlign: TextAlign.center: 文本以居中形式对齐,这个也算比较常用的了。 TextAlign.left:左对齐,经常使用,让文本居左进行对齐,效果和start一样。 TextAlign.right :右对齐,使用频率也不算高。 TextAlign.start:以开始位置进行对齐,类似于左对齐。 TextAlign.end: 以为本结尾处进行对齐,不常用。有点类似右对齐.

设置最多显示的行数 maxLines: 2,

设置文本溢出时 overflow:

TextOverflow.clip, 直接截断(默认) TextOverflow.ellipsis, 三个点 TextOverflow.fade, 出的部分会进行一个渐变消失的效果,上线的渐变

相当于div ###alignment: Alignment.center, Alignment.centerLeft, Alignment.centerRight, Alignment.topLeft, Alignment.topCenter, Alignment.topRight, Alignment.bottomLeft, Alignment.bottomCenter, Alignment.bottomRight,

###padding||margin: const EdgeInsets.all(10) const EdgeInsets.fromLTRB(左上右下)

###decoration(和背景色color冲突,两者选一) decoration:new BoxDecoration( gradient:const LinearGradient( colors:[Colors.lightBlue,Colors.greenAccent,Colors.purple] ) // 渐变 border:Border.all(width:2.0,color:Colors.red) // 边框 ),

###Image .asset('加载资源图片') .network('图片网络地址') .file:加载本地图片 ###BoxFit .fill:全图显示,图片会被拉伸,并充满父容器。 .contain:全图显示,显示原比例,可能会有空隙。 .cover:显示可能拉伸,可能裁切,充满(图片要充满整个容器,还不变形)。 .fitWidth:宽度充满(横向充满),显示可能拉伸,可能裁切。 .fitHeight :高度充满(竖向充满),显示可能拉伸,可能裁切。 .scaleDown:效果和contain差不多,但是此属性不允许显示超过源图片大小,可小不可大。 ###colorBlendMode 图片混入颜色(滤镜?) colorBlendMode: BlendMode.darken,

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