迁移 flutter2.0

lib/views/widgets/SingleChildRenderObjectWidget/RepaintBoundary/main.dart

@@ -0,0 +1,24 @@
+/// create by 张风捷特烈 on 2020/7/22
+/// contact me by email 1981462002@qq.com
+/// 说明:
+
+import 'package:flutter/material.dart';
+import 'node2_save.dart';
+
+
+void main() => runApp(MyApp());
+
+class MyApp extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+        title: 'Flutter Demo',
+        theme: ThemeData(
+          primarySwatch: Colors.blue,
+        ),
+        home: Scaffold(
+          appBar: AppBar(),
+          body: Center(child: RepaintBoundarySave()),
+        ));
+  }
+}