初步优化项目结构

lib/widget_system/widgets/StatelessWidget/DataTable/node1_base.dart

@@ -0,0 +1,46 @@
+
+
+/// create by 张风捷特烈 on 2020-03-21
+/// contact me by email 1981462002@qq.com
+/// 说明:
+//    {
+//      "widgetId": 102,
+//      "name": 'DataTable基本使用',
+//      "priority": 1,
+//      "subtitle":
+//          "【columns】 : 列   【List<DataColumn>】\n"
+//          "【rows】 : 行  【List<DataRow>】",
+//    }
+import 'package:flutter/material.dart';
+
+class _Bean {
+  final int id;
+  final String name;
+  final String type;
+
+  _Bean(this.id, this.name, this.type);
+}
+
+class CustomDataTable extends StatelessWidget {
+  final data = [
+    _Bean(101, 'DataTable', 'StatelessWidget'),
+    _Bean(44, 'RangeSlider', 'StatefulWidget'),
+    _Bean(2, 'Text', 'StatelessWidget'),
+    _Bean(1, 'Image', 'StatefulWidget'),
+  ];
+
+  final columns = ['id', '名称', '类型'];
+
+  @override
+  Widget build(BuildContext context) {
+    return DataTable(
+        columns: columns.map((e) => DataColumn(label: Text(e))).toList(),
+        rows: data
+            .map((e) => DataRow(cells: [
+          DataCell(Text('${e.id}')),
+          DataCell(Text('${e.name}')),
+          DataCell(Text('${e.type}')),
+        ]))
+            .toList());
+  }
+}