hyzp_ybqx-Commit092：已初步实现显示保存的用户列表，选择列表项目后能够成功登录

lib/widget/JdText.dart

@@ -1,17 +1,19 @@
 import 'package:flutter/material.dart';
 import 'package:flutter/rendering.dart';
-
 import 'package:flutter_screenutil/flutter_screenutil.dart';
+import 'package:hyzp_ybqx/components/commonFun.dart';
 
 class JdText extends StatefulWidget {
   final String text;
   final String title;
   bool password;
-  final Object onChanged;
+  final Function(String) onChanged;
   final int maxLines;
   final double height;
   TextEditingController controller;
   final String endBtn;
+  final Function() onEndBtn;
+  final Function() onEndBtn2;
 
   JdText(
       {Key key,
@@ -22,7 +24,9 @@ class JdText extends StatefulWidget {
       this.maxLines = 1,
       this.height = 68,
       this.controller,
-      this.endBtn})
+      this.endBtn,
+      this.onEndBtn,
+      this.onEndBtn2})
       : super(key: key);
 
   _JdTextState createState() => _JdTextState();
@@ -31,8 +35,40 @@ class JdText extends StatefulWidget {
 class _JdTextState extends State<JdText> {
   Icon ShowHiddenIcon = Icon(Icons.more_horiz);
 
+  // Flutter 监听TextField焦点
+  FocusNode _focusNode = FocusNode();
+  bool isFocus = false;
+
   void initState() {
     super.initState();
+
+    // _focusNode.addListener(() {
+    //   setState(() {
+    //     isFocus = _focusNode.hasFocus;
+    //     widget.onEndBtn2();
+    //   });
+    // });
+
+    //输入框焦点
+    _focusNode.addListener(() {
+      if (!_focusNode.hasFocus) {
+        print(widget.endBtn + '：失去焦点');
+      } else {
+        print(widget.endBtn + '：得到焦点');
+        if (null != widget.onEndBtn2) {
+          widget.onEndBtn2();
+          setState(() {});
+        }
+      }
+    });
+  }
+
+  //离开页面记着销毁和清除
+  @override
+  void dispose() {
+    // TODO: implement dispose
+    _focusNode.unfocus();
+    super.dispose();
   }
 
   @override
@@ -63,6 +99,7 @@ class _JdTextState extends State<JdText> {
           //Flutter中Row中不能直接使用textfield控件
           Expanded(
             child: TextField(
+              focusNode: _focusNode,
               textAlignVertical: TextAlignVertical(y: 1.0),
               controller: widget.controller,
               maxLines: 1,
@@ -91,14 +128,29 @@ class _JdTextState extends State<JdText> {
           // alignment: Alignment(0, -1),
           // padding: EdgeInsets.only(bottom: 23),
           child: IconButton(
-              icon: Icon(Icons.highlight_off),
-              onPressed: () {
-                setState(() {
-                  widget.controller.clear();
-                });
-              }),
+              padding: EdgeInsets.only(bottom: 0.0),
+              iconSize: 40,
+              icon: Icon(
+                Icons.arrow_drop_down,
+                color: g_users.isNotEmpty ? Colors.blueAccent : Colors.grey,
+              ),
+              onPressed: widget.onEndBtn),
         );
         break;
+      // case 'ClearBtn':
+      //   widget.controller = new TextEditingController();
+      //   btn = Container(
+      //     // alignment: Alignment(0, -1),
+      //     // padding: EdgeInsets.only(bottom: 23),
+      //     child: IconButton(
+      //         icon: Icon(Icons.highlight_off),
+      //         onPressed: () {
+      //           setState(() {
+      //             widget.controller.clear();
+      //           });
+      //         }),
+      //   );
+      //   break;
       case 'ShowHiddenBtn':
         btn = Container(
           // alignment: Alignment(0, -1),