fix: exception in school card

Author: BenderBlog

lib/controller/school_card_controller.dart

@@ -1,16 +1,22 @@
-import 'dart:typed_data';
+//import 'dart:typed_data';
 
+import 'package:dio/dio.dart';
+import 'dart:developer' as developer;
 import 'package:get/get.dart';
 import 'package:jiffy/jiffy.dart';
 import 'package:watermeter/model/xidian_ids/paid_record.dart';
 import 'package:watermeter/repository/xidian_ids/school_card_session.dart';
 
 class SchoolCardController extends GetxController {
+  bool isGet = false;
+  String? error;
+
   SchoolCardSession session = SchoolCardSession();
-  late Future<Uint8List> qrcode;
+  // late Future<Uint8List> qrcode;
   var money = "".obs;
   List<DateTime?> timeRange = [];
   var getPaid = <PaidRecord>[].obs;
+
   @override
   void onInit() {
     super.onInit();
@@ -23,9 +29,23 @@ class SchoolCardController extends GetxController {
 
   @override
   void onReady() async {
-    super.onReady();
-    await session.initSession();
-    await updateMoney();
+    try {
+      super.onReady();
+      await session.initSession();
+      await updateMoney();
+    } on DioException catch (e, s) {
+      developer.log(
+        "Network exception: ${e.message}\nStack: $s",
+        name: "ScoreController",
+      );
+      error = "网络错误，可能是没联网，可能是学校服务器出现了故障:-P";
+    } catch (e, s) {
+      developer.log(
+        "Other exception: $e\nStack: $s",
+        name: "ScoreController",
+      );
+      error = "未知错误，感兴趣的话，请接到电脑 adb 查看日志。";
+    }
   }
 
   Future<void> refreshPaidRecord() async {

lib/page/home.dart

@@ -4,6 +4,7 @@ import 'package:watermeter/page/setting/setting.dart';
 import 'package:watermeter/page/widget.dart';
 import 'package:watermeter/page/xdu_planet/mainpage.dart';
 import 'package:watermeter/page/xidian_directory/xidian_directory.dart';
+import 'package:watermeter/repository/network_session.dart';
 
 class PageInformation {
   final int index;
@@ -70,25 +71,27 @@ class _HomePageState extends State<HomePage> {
     super.initState();
     _controller = PageController();
 
-    WidgetsBinding.instance.addPostFrameCallback((_) {
-      showDialog(
-        context: context,
-        builder: (context) => AlertDialog(
-          title: const Text("统一认证服务离线模式开启"),
-          content: const Text(
-            "无法连接到统一认证服务服务器，所有和其相关的服务暂时不可用。\n"
-            "成绩查询，考试信息查询，欠费查询，校园卡查询关闭。课表显示缓存数据。其他功能暂不受影响。\n"
-            "如有不便，敬请谅解。",
-          ),
-          actions: [
-            TextButton(
-              onPressed: () => Navigator.of(context).pop(),
-              child: const Text("确定"),
+    if (offline) {
+      WidgetsBinding.instance.addPostFrameCallback((_) {
+        showDialog(
+          context: context,
+          builder: (context) => AlertDialog(
+            title: const Text("统一认证服务离线模式开启"),
+            content: const Text(
+              "无法连接到统一认证服务服务器，所有和其相关的服务暂时不可用。\n"
+              "成绩查询，考试信息查询，欠费查询，校园卡查询关闭。课表显示缓存数据。其他功能暂不受影响。\n"
+              "如有不便，敬请谅解。",
             ),
-          ],
-        ),
-      );
-    });
+            actions: [
+              TextButton(
+                onPressed: () => Navigator.of(context).pop(),
+                child: const Text("确定"),
+              ),
+            ],
+          ),
+        );
+      });
+    }
   }
 
   Widget _buildPhone() => Scaffold(

lib/repository/network_session.dart

@@ -20,7 +20,7 @@ Alice alice = Alice();
 
 late Directory supportPath;
 
-bool offline = true;
+bool offline = false;
 
 class NetworkSession {
   @protected