Flutter入门学习--(6)容器组件Container

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  在flutter中，我们想在一个页面中放置多个组件，就要使用Container容器组件，Container可以放置内置组件，并设置样式

padding：内边距

margin：外边距

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
        title: 'Flutter',
        home: Scaffold(
          appBar: AppBar(
            title: Text("Hello World"),
          ),
          body: Center(
              child: Container(
            child: Text(
              "Hello Flutterr", 
            ),
            color: Colors.yellow,
            padding:const EdgeInsets.all(19),
            margin: EdgeInsets.fromLTRB(20, 40, 60, 180),
           
          )),
        ));
  }
}