Padding:一个Widget,会给其子Widget添加指定的填充 Center:将其子Widget居中显示在自身内部的Widget Align:一个WIdget,它可以将其子Widget对其,并可以根据子Widget的大小自动调整大小 FittedBox:按自己的大小调整其子Widget的大小和位置 Baseline:根据子项的基准线对它们的位置进行定位的Widget Offstage:一个布局Widget,可...
入门学习Flutter有一段时间了,Demo用过的Widget也有不少,想着整体的梳理一下,所以今天结合Flutter中文网和书籍梳理一下Widget的使用,首先梳理一下拥有单个子元素的布局Widget。 Container:一个拥有绘制、定位、调整大小的Widget Padding:一个Widget,会给其子Widget添加指定的填充 Center:将其子Widget居中显示在自身内部的...
body - 当前界面所显示的主要内容 Widget。 drawer - 抽屉菜单控件。 import 'package:flutter/material.dart';voidmain() { runApp(MyApp()); } class MyApp extends StatelessWidget { @override Widget build(BuildContext context) {//TODO: implement buildreturnMaterialApp( title:"我是一个标题", home: S...
StatelessWidget 是无状态组件,状态不可变的 widget StatefulWidget 是有状态组件,持有的状态可能在 widget 生命周期改变。 import'package:flutter/material.dart'voidmain()=>runApp(myApp());classmyAppextendsStatelessWidget{@overrideWidgetbuild(BuildContextcontext){returnCenter{child:Text{"我是一个文本内容", text...
Flutter基础widgets教程-Center篇 1 Center 将其子widget居中显示在自身内部的widget 2 构造函数 Center({ Key key, double widthFactor, double heightFactor, Widget child }) 1. 2. 3. 4. 5. 6. 3 常用属性 3.1 child:子控件 child: Text('中间子组件'),...
A placeholder for better Flutter development experience, that you don't need to make your child required everywhere in your code base. classExampleextendsStatelessWidget{constExample({super.key,// Other properties...this.child=constCenterText('example widget'), });// Other properties...finalWidge...
import 'package:flutter/material.dart'; void main() { runApp(const MyApp()); } class MyApp extends StatelessWidget { const MyApp({super.key}); @override Widget build(BuildContext context) { return MaterialApp( title: 'Flutter Demo', theme: ThemeData( colorScheme: ColorScheme.fromSeed(seedCol...
Flutter基础widgets教程-Center篇 1 Center 将其子widget居中显示在自身内部的widget 2 构造函数 Center({ Key key, double widthFactor, double 3881614 python: center、ljust、rjust 函数 Syntax ljust str. ljust(width[, fillchar]) rjust str. rjust(width[, fillchar]) center str... center(width[, ...
Flutter基础widgets教程-Center篇 1 Center 将其子widget居中显示在自身内部的widget 2 构造函数 Center({ Key key, double widthFactor, double 3881614 python: center、ljust、rjust 函数 Syntax ljust str. ljust(width[, fillchar]) rjust str. rjust(width[, fillchar]) center str... center(width[, ...
(BuildContext context) {returnMaterialApp( home: Scaffold( appBar: AppBar(title:constText('Aliyun face plugin demo')), body: Center( child: Column(children: <Widget>[ Text('$_infos\n'), ElevatedButton( onPressed: ()async{ getMetaInfos(); }, child: Text("getMetaInfos")), Elevated...