初步优化项目结构

2021-09-26 20:50:13 +08:00
parent f16d031417
commit 29a985e1b1
535 changed files with 366 additions and 359 deletions
--- a/lib/widget_system/widgets/StatefulWidget/TextFormField/node1_base.dart
+++ b/lib/widget_system/widgets/StatefulWidget/TextFormField/node1_base.dart
@@ -0,0 +1,81 @@
+import 'package:flutter/material.dart';
+
+/// create by 张风捷特烈 on 2020-04-01
+/// contact me by email 1981462002@qq.com
+/// 说明: 
+//    {
+//      "widgetId": 199,
+//      "name": 'TextFormField基本使用',
+//      "priority": 1,
+//      "subtitle":
+//          "    基本属性和TextField一致，详见之\n"
+//          "【validator】 : 验证函数   【FormFieldValidator<String> 】\n"
+//          "【onFieldSubmitted】 : 提交回调   【ValueChanged<String>】\n"
+//          "【onSaved】 : 表单save时回调  【FormFieldSetter<String>】",
+//    }
+class CustomTextFormField extends StatefulWidget {
+  @override
+  _CustomTextFormFieldState createState() => _CustomTextFormFieldState();
+}
+
+class _CustomTextFormFieldState extends State<CustomTextFormField> {
+  GlobalKey<FormState> _formKey = GlobalKey<FormState>();
+
+  @override
+  Widget build(BuildContext context) {
+    return Row(
+      children: <Widget>[
+        SizedBox(width: 40),
+        Expanded(
+          child: TextFormField(
+            style: TextStyle(textBaseline: TextBaseline.alphabetic),
+            decoration: InputDecoration(
+              border: OutlineInputBorder(),
+              labelText: 'username',
+            ),
+            validator: _validateUsername,
+            onFieldSubmitted: _onFieldSubmitted,
+            onSaved: _onSaved,
+          ),
+        ),
+        _buildSubmitButton(context),
+      ],
+    );
+  }
+
+  String? _validateUsername(value) {
+    if (value.isEmpty) {
+      return '用户名不能为空';
+    }
+    return null;
+  }
+  _onSaved(value){
+    print('onSaved:'+value);
+  }
+
+  void _onFieldSubmitted(value) {
+    print('onFieldSubmitted:'+value);
+  }
+
+  RaisedButton _buildSubmitButton(BuildContext context) {
+    return RaisedButton(
+      color: Colors.blue,
+      shape: CircleBorder(
+        side: BorderSide(width: 2.0, color: Color(0xFFFFDFDFDF)),
+      ),
+      onPressed: _onSubmit,
+      child: Icon(
+        Icons.check,
+        color: Colors.white,
+      ),
+    );
+  }
+
+  _onSubmit(){
+    if(_formKey.currentState==null) return;
+    _formKey.currentState!.save();
+    if (_formKey.currentState!.validate()) {
+      FocusScope.of(context).requestFocus(FocusNode());
+    }
+  }
+}