初步优化项目结构

lib/widget_system/widgets/StatefulWidget/TextField/node1_base.dart

@@ -0,0 +1,63 @@
+import 'package:flutter/material.dart';
+/// create by 张风捷特烈 on 2020/4/30
+/// contact me by email 1981462002@qq.com
+/// 说明:
+//    {
+//      "widgetId": 54,
+//      "name": 'TextField基本用法',
+//      "priority": 1,
+//      "subtitle":
+//          "【controller】 : 控制器   【TextEditingController】\n"
+//          "【style】 : 文字样式   【TextStyle】\n"
+//          "【decoration】 : 装饰线   【InputDecoration】\n"
+//          "【onEditingComplete】 : 输入完成事件   【Function()】\n"
+//          "【onSubmitted】 : 提交事件   【Function(String)】\n"
+//          "【onChanged】 : 输入事件   【Function(String)】",
+//    }
+class CustomTextField extends StatefulWidget {
+  @override
+  _CustomTextFieldState createState() => _CustomTextFieldState();
+}
+
+class _CustomTextFieldState extends State<CustomTextField> {
+  final FocusNode _focusNode = FocusNode();
+  late TextEditingController _controller;
+
+  void initState() {
+    super.initState();
+    _controller = TextEditingController();
+  }
+
+  @override
+  void dispose() {
+    _controller.dispose();
+    _focusNode.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+        width: 300,
+        child: TextField(
+          controller: _controller,
+          style: TextStyle(color: Colors.blue),
+          decoration: InputDecoration(
+            border: OutlineInputBorder(),
+            labelText: 'username',
+          ),
+          onEditingComplete: () {
+            print('onEditingComplete');
+          },
+          onChanged: (v) {
+            print('onChanged:' + v);
+          },
+          onSubmitted: (v) {
+            FocusScope.of(context).requestFocus(_focusNode);
+            print('onSubmitted:' + v);
+            _controller.clear();
+          },
+        ));
+  }
+}
+