hyzp_ybqx-Commit097：优化。已经能够保存已登录的用户信息

lib/pages/Login/LoginByName3.dart

@@ -418,65 +418,81 @@ class _LoginPageState extends State<LoginByName3> {
   ///构建历史账号ListView
   Widget _buildListView() {
     if (g_can_expand_ListView) {
-      return Column(
-        children: [
-          ListView.builder(
-            shrinkWrap: true,
-            physics: BouncingScrollPhysics(),
-            itemBuilder: (context, index) {
-              UserAccount user = g_users[index];
-              return GestureDetector(
-                child: Column(
-                  children: [
-                    Container(
-                      width: ScreenUtil().screenWidth * 0.9,
-                      // color: Colors.grey[200],
-                      color: Colors.grey[200],
-                      padding: EdgeInsets.only(left: 8, top: 8, right: 8, bottom: 8),
-                      child: Column(
-                        children: [
-                          Row(
-                            mainAxisAlignment: MainAxisAlignment.spaceBetween,
-                            children: <Widget>[
-                              Text("${user.username}"),
-                              GestureDetector(
-                                child: Padding(
-                                  padding: EdgeInsets.all(0),
-                                  child: Icon(
-                                    // Icons.remove_circle_outline,
-                                    Icons.highlight_off,
-                                    color: Colors.grey,
+      return Center(
+        child: Container(
+          width: ScreenUtil().screenWidth * 0.9,
+          decoration: BoxDecoration(
+            border: Border(
+              left: BorderSide(width: 1, color: Colors.black),
+              right: BorderSide(width: 1, color: Colors.black),
+              bottom: BorderSide(width: 1, color: Colors.black),
+            ),
+          ),
+          // decoration: new BoxDecoration(
+          //   border: new Border.all(color: Colors.black, width: 0.5),
+          //   // color: Colors.black,
+          //   // borderRadius: new BorderRadius.circular((20.0)),
+          // ),
+          child: Column(
+            children: [
+              ListView.builder(
+                shrinkWrap: true,
+                physics: BouncingScrollPhysics(),
+                itemBuilder: (context, index) {
+                  UserAccount user = g_users[index];
+                  return GestureDetector(
+                    child: Column(
+                      children: [
+                        Container(
+                          // color: Colors.grey[200],
+                          color: Colors.grey[200],
+                          padding: EdgeInsets.only(left: 8, top: 8, right: 8, bottom: 8),
+                          child: Column(
+                            children: [
+                              Row(
+                                mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                                children: <Widget>[
+                                  Text("${user.username}"),
+                                  GestureDetector(
+                                    child: Padding(
+                                      padding: EdgeInsets.all(0),
+                                      child: Icon(
+                                        // Icons.remove_circle_outline,
+                                        Icons.highlight_off,
+                                        color: Colors.grey,
+                                      ),
+                                    ),
+                                    onTap: () {
+                                      setState(() {
+                                        g_users.remove(user);
+                                        SaveAccountPasswordManager.delUser(user);
+                                        //处理最后一个数据，假如最后一个被删掉，将Expand置为false
+                                        //如果个数大于1个或者唯一一个账号跟当前账号不一样才弹出历史账号
+                                        g_can_expand_ListView = g_users.isNotEmpty;
+                                      });
+                                    },
                                   ),
-                                ),
-                                onTap: () {
-                                  setState(() {
-                                    g_users.remove(user);
-                                    SaveAccountPasswordManager.delUser(user);
-                                    //处理最后一个数据，假如最后一个被删掉，将Expand置为false
-                                    //如果个数大于1个或者唯一一个账号跟当前账号不一样才弹出历史账号
-                                    g_can_expand_ListView = g_users.isNotEmpty;
-                                  });
-                                },
+                                ],
                               ),
+                              Divider(height: 1.0, color: Colors.black),
                             ],
                           ),
-                          Divider(height: 1.0, color: Colors.black),
-                        ],
-                      ),
+                        ),
+                      ],
                     ),
-                  ],
-                ),
-                onTap: () {
-                  setState(() {
-                    g_userInfo.username = user.username;
-                    g_userInfo.password = user.password;
-                  });
+                    onTap: () {
+                      setState(() {
+                        g_userInfo.username = user.username;
+                        g_userInfo.password = user.password;
+                      });
+                    },
+                  );
                 },
-              );
-            },
-            itemCount: g_users.length,
-          )
-        ],
+                itemCount: g_users.length,
+              )
+            ],
+          ),
+        ),
       );
     }
     return Container();