更新Flutter 版本 2.5.3

README.md

@@ -25,11 +25,10 @@
 > 当前Flutter 版本
 
 ```
-Flutter 2.5.0 • channel stable • https://github.com/flutter/flutter.git
-Framework • revision 4cc385b4b8 (2 days ago) • 2021-09-07 23:01:49 -0700
-Engine • revision f0826da7ef
-Tools • Dart 2.14.0
-
+Flutter 2.5.3 • channel stable • https://github.com/flutter/flutter.git
+Framework • revision 18116933e7 (4 weeks ago) • 2021-10-15 10:46:35 -0700
+Engine • revision d3ea636dc5
+Tools • Dart 2.14.4
 ```
 
 ---

lib/widget_system/widgets/StatefulWidget/zz_no/Scrollable.dart

@@ -1,58 +0,0 @@
-//import 'package:flutter/material.dart';
-//
-///// create by 张风捷特烈 on 2020-03-28
-///// contact me by email 1981462002@qq.com
-///// 说明:
-//
-//class CustomScrollable extends StatelessWidget {
-//  final data = <Color>[
-//    Colors.blue[50],
-//    Colors.blue[100],
-//    Colors.blue[200],
-//    Colors.blue[300],
-//    Colors.blue[400],
-//    Colors.blue[500],
-//    Colors.blue[600],
-//    Colors.blue[700],
-//    Colors.blue[800],
-//    Colors.blue[900],
-//  ];
-//
-//  @override
-//  Widget build(BuildContext context) {
-//    return Container(
-//      height: 200,
-//      child: Scrollable(
-//        viewportBuilder: (ctx, p) => Viewport(offset: p,
-//        slivers: <Widget>[
-//
-//        ],
-//        ),
-//      ),
-//    );
-//  }
-//
-//  Column buildColumn() {
-//    return Column(
-//      children: data
-//          .map((color) => Container(
-//                alignment: Alignment.center,
-//                height: 50,
-//                color: color,
-//                child: Text(
-//                  colorString(color),
-//                  style: TextStyle(color: Colors.white, shadows: [
-//                    Shadow(
-//                        color: Colors.black,
-//                        offset: Offset(.5, .5),
-//                        blurRadius: 2)
-//                  ]),
-//                ),
-//              ))
-//          .toList(),
-//    );
-//  }
-//
-//  String colorString(Color color) =>
-//      "#${color.value.toRadixString(16).padLeft(8, '0').toUpperCase()}";
-//}