hyzp_ybqx-Commit080：解决以下两个问题：

1、对长度小于等于2的区县名称（“高县”、“珙县”等）不进行去尾操作
2、在线升级测试OK。使用app_installer: 0.5.0插件，准备解决Android11允许“安装未知来源”后应用重启的问题，https://pub.dev/packages/app_installer。

lib/components/UserInfo.dart

@@ -115,7 +115,11 @@ class UserInfo {
 
   // 去除末尾的区县
   String trim_county(String _name) {
-    return _name.substring(0, _name.length - 1);
+    // 对长度小于等于2的区县名称（“高县”、“珙县”等）不进行去尾操作
+    if (_name.length > 2) {
+      _name = _name.substring(0, _name.length - 1);
+    }
+    return _name;
   }
 
   Map mapUserInfoRet = {

lib/pages/MyMsics/05_updated/MyUpdatedNew.dart

@@ -6,12 +6,13 @@ import 'dart:io';
 import 'dart:isolate';
 import 'dart:ui';
 
+import 'package:app_installer/app_installer.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_downloader/flutter_downloader.dart';
 import 'package:flutter_screenutil/flutter_screenutil.dart';
 import 'package:hyzp_ybqx/components/dioFun.dart';
-import 'package:open_file/open_file.dart';
 import 'package:path_provider/path_provider.dart';
+import 'package:permission_handler/permission_handler.dart';
 import 'package:progress_dialog/progress_dialog.dart';
 
 import '../../../components/commonFun.dart';
@@ -314,7 +315,17 @@ class MyUpdatedNew {
 
   /// 安装apk
   Future<Null> _installApk() async {
-    await OpenFile.open(appPath + '/' + apkName);
+    // await OpenFile.open(appPath + '/' + apkName);
+    // app_installer: 0.5.0          # Flutter 2.1，修复 Android 11 上允许权限后应用重启的问题，https://pub.dev/packages/app_installer
+    Map<Permission, PermissionStatus> permissionStatuses = await [
+      Permission.storage,
+    ].request();
+
+    if (permissionStatuses[Permission.storage] == PermissionStatus.granted) {
+      await AppInstaller.installApk(appPath + '/' + apkName);
+    } else {
+      print('Permission request fail!');
+    }
   }
 
   /// 获取apk存储位置

lib/pages/Works/TJXX/tj_data.dart

@@ -606,45 +606,6 @@ Future getAllSumNew() async {
 ]
 */
 
-// 实现多个基于 Page1_Works 构建的页面共享统计数据
-Future startGetStatisDataOld() async {
-  ///获取点位信息数据
-  //listDwinfoGetList2.clear();
-
-  if (listDwinfoGetList2.isEmpty) {
-    //若没有读取点位数据，便需要先读取
-    getThePageList(theHyshlx: 'dwxx').then((value) {
-      listDwinfoGetList2 = value;
-      print('listDwinfoGetList2 = \n$listDwinfoGetList2');
-      dwSum = listDwinfoGetList2.length;
-      getZptjStatisAlone();
-      getTodayShtj();
-      getClltjStatisAlone();
-    });
-  } else {
-    if (mapStatisInfo['今日抓拍'] < 0) {
-      getZptjStatisAlone();
-    } else {
-      //发送统计数据已更新广播
-      eventBus.fire(StatisDataUpdate('统计数据已更新'));
-    }
-
-    if (mapStatisInfo['今日初审'] < 0) {
-      getTodayShtj();
-    } else {
-      //发送统计数据已更新广播
-      eventBus.fire(StatisDataUpdate('统计数据已更新'));
-    }
-
-    if (mapStatisInfo['今日车流'] < 0) {
-      getClltjStatisAlone();
-    } else {
-      //发送统计数据已更新广播
-      eventBus.fire(StatisDataUpdate('统计数据已更新'));
-    }
-  }
-}
-
 //获取已审核黑烟车统计数据：App.Car_Statis.GetStaHyc
 //{
 //     "ret": 200,

pubspec.lock

@@ -1,6 +1,13 @@
 # Generated by pub
 # See https://dart.dev/tools/pub/glossary#lockfile
 packages:
+  app_installer:
+    dependency: "direct main"
+    description:
+      name: app_installer
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "0.5.0"
   archive:
     dependency: transitive
     description:

pubspec.yaml

@@ -153,6 +153,9 @@ dependencies:
   flutter_downloader: ^1.5.2    # 下载文件
   package_info: ^0.4.3+2        # 检测版本号
   progress_dialog: ^1.2.0       # 显示进度对话框
+  # app_installer: ^1.1.0          # Flutter 2.12，修复 Android 11 上允许权限后应用重启的问题
+  app_installer: ^0.5.0          # Flutter 2.1，修复 Android 11 上允许权限后应用重启的问题，https://pub.dev/packages/app_installer
+  # install_plugin: ^2.0.1        # 不行，https://pub.dev/packages/install_plugin
 
   #flutter_app_badger and flutter_app_icon_badge Not working on android devices of Samsung Galaxy S7 and Samsung Galaxy S10
   #flutter_app_badger: ^1.1.2      # 桌面App图标红点