修改房间选择 详情不更改bug 以及部分样式

lib/pages/mh_page/edit_bed.dart

@@ -1,6 +1,7 @@
 import 'package:ef/ef.dart';
 import 'package:flutter/material.dart';
 import 'package:vbvs_app/common/color/ServiceConstant.dart';
+import 'package:vbvs_app/common/color/appConstants.dart';
 import 'package:vbvs_app/common/util/FitTool.dart';
 import 'package:vbvs_app/common/util/MyUtils.dart';
 import 'package:vbvs_app/common/util/requestWithLog.dart';
@@ -121,9 +122,10 @@ class _EditBedPageState extends State<EditBedPage> {
                                         editedData['name'] = val;
                                       },
                                       textAlign: TextAlign.center,
-
+                                      maxLength: AppConstants().text_length,
                                       decoration: InputDecoration(
                                         hintText: "请输入设备的名称",
+                                        // counterText: "",
                                         contentPadding:
                                             const EdgeInsetsDirectional
                                                 .fromSTEB(10, 0, 10, 0),