优化example代码

-# Generated by pub on 2020-01-06 17:25:02.129620.
+# Generated by pub on 2020-01-06 17:46:26.285635.
 archive:file:///D:/flutter/.pub-cache/hosted/pub.dartlang.org/archive-2.0.11/lib/
 args:file:///D:/flutter/.pub-cache/hosted/pub.dartlang.org/args-1.5.2/lib/
 async:file:///D:/flutter/.pub-cache/hosted/pub.dartlang.org/async-2.4.0/lib/

@@ -141,25 +141,25 @@ Column(
 import 'package:flutter/material.dart';
 import 'package:flutter_screenutil/flutter_screenutil.dart';
 
-void main() => runApp(new MyApp());
+void main() => runApp(MyApp());
 
 class MyApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
-    return new MaterialApp(
+    return MaterialApp(
       debugShowCheckedModeBanner: false,
       title: 'Flutter_ScreenUtil',
-      theme: new ThemeData(
+      theme: ThemeData(
         primarySwatch: Colors.blue,
       ),
-      home: new MyHomePage(),
+      home: MyHomePage(),
     );
   }
 }
 
 class MyHomePage extends StatefulWidget {
   @override
-  _MyHomePageState createState() => new _MyHomePageState();
+  _MyHomePageState createState() => _MyHomePageState();
 }
 
 class _MyHomePageState extends State<MyHomePage> {
@@ -185,11 +185,11 @@ class _ExampleWidgetState extends State<ExampleWidget> {
   @override
   Widget build(BuildContext context) {
     printScreenInformation();
-    return new Scaffold(
-      appBar: new AppBar(
-        title: new Text(widget.title),
+    return Scaffold(
+      appBar: AppBar(
+        title: Text(widget.title),
       ),
-      body: new Center(
+      body: SingleChildScrollView(
         child: Column(
           crossAxisAlignment: CrossAxisAlignment.center,
           children: <Widget>[

@@ -140,18 +140,18 @@ Column(
 import 'package:flutter/material.dart';
 import 'package:flutter_screenutil/flutter_screenutil.dart';
 
-void main() => runApp(new MyApp());
+void main() => runApp( MyApp());
 
 class MyApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
-    return new MaterialApp(
+    return MaterialApp(
       debugShowCheckedModeBanner: false,
       title: 'Flutter_ScreenUtil',
-      theme: new ThemeData(
+      theme: ThemeData(
         primarySwatch: Colors.blue,
       ),
-      home: new MyHomePage(),
+      home: MyHomePage(),
     );
   }
 }
@@ -162,7 +162,7 @@ class MyHomePage extends StatefulWidget {
   final String title;
 
   @override
-  _MyHomePageState createState() => new _MyHomePageState();
+  _MyHomePageState createState() => _MyHomePageState();
 }
 
 class _MyHomePageState extends State<MyHomePage> {
@@ -190,11 +190,11 @@ class _ExampleWidgetState extends State<ExampleWidget> {
   @override
   Widget build(BuildContext context) {
     printScreenInformation();
-    return new Scaffold(
-      appBar: new AppBar(
-        title: new Text(widget.title),
+    return Scaffold(
+      appBar: AppBar(
+        title: Text(widget.title),
       ),
-      body: new Center(
+      body: SingleChildScrollView(
         child: Column(
           crossAxisAlignment: CrossAxisAlignment.center,
           children: <Widget>[

@@ -164,11 +164,11 @@ import 'package:flutter_screenutil/flutter_screenutil.dart';
     print(
         'Razão da fonte e altura para o tamanho do design:${ScreenUtil().scaleHeight * ScreenUtil.pixelRatio}');
         
-    return new Scaffold(
-      appBar: new AppBar(
-        title: new Text(widget.title),
+    return Scaffold(
+      appBar: AppBar(
+        title: Text(widget.title),
       ),
-      body: new Center(
+      body: SingleChildScrollView(
         child: Column(
           crossAxisAlignment: CrossAxisAlignment.center,
           children: <Widget>[

 import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
 import 'package:flutter_screenutil/flutter_screenutil.dart';
 
-void main() => runApp(new MyApp());
+void main() => runApp(MyApp());
 
 class MyApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
-    return new MaterialApp(
+    return MaterialApp(
       debugShowCheckedModeBanner: false,
       title: 'Flutter_ScreenUtil',
-      theme: new ThemeData(
+      theme: ThemeData(
         primarySwatch: Colors.blue,
       ),
-      home: new MyHomePage(),
+      home: MyHomePage(),
     );
   }
 }
 
 class MyHomePage extends StatefulWidget {
   @override
-  _MyHomePageState createState() => new _MyHomePageState();
+  _MyHomePageState createState() => _MyHomePageState();
 }
 
 class _MyHomePageState extends State<MyHomePage> {
@@ -45,11 +46,11 @@ class _ExampleWidgetState extends State<ExampleWidget> {
   @override
   Widget build(BuildContext context) {
     printScreenInformation();
-    return new Scaffold(
-      appBar: new AppBar(
-        title: new Text(widget.title),
+    return Scaffold(
+      appBar: AppBar(
+        title: Text(widget.title),
       ),
-      body: new Center(
+      body: SingleChildScrollView(
         child: Column(
           crossAxisAlignment: CrossAxisAlignment.center,
           children: <Widget>[

 import 'package:flutter/material.dart';
 import 'package:flutter_screenutil/flutter_screenutil.dart';
 
-void main() => runApp(new MyApp());
+void main() => runApp(MyApp());
 
 class MyApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
-    return new MaterialApp(
+    return MaterialApp(
       debugShowCheckedModeBanner: false,
       title: 'Flutter_ScreenUtil',
-      theme: new ThemeData(
+      theme: ThemeData(
         primarySwatch: Colors.blue,
       ),
-      home: new MyHomePage(),
+      home: MyHomePage(),
     );
   }
 }
@@ -23,7 +23,7 @@ class MyHomePage extends StatefulWidget {
   final String title;
 
   @override
-  _MyHomePageState createState() => new _MyHomePageState();
+  _MyHomePageState createState() => _MyHomePageState();
 }
 
 class _MyHomePageState extends State<MyHomePage> {
@@ -51,11 +51,11 @@ class _ExampleWidgetState extends State<ExampleWidget> {
   @override
   Widget build(BuildContext context) {
     printScreenInformation();
-    return new Scaffold(
-      appBar: new AppBar(
-        title: new Text(widget.title),
+    return Scaffold(
+      appBar: AppBar(
+        title: Text(widget.title),
       ),
-      body: new Center(
+      body: Center(
         child: Column(
           crossAxisAlignment: CrossAxisAlignment.center,
           children: <Widget>[

@@ -75,7 +75,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "1.0.0"
+    version: "1.0.1"
   flutter_test:
     dependency: "direct dev"
     description: flutter