diff --git a/lib/app/core/bindings/initial_binding.dart b/lib/app/core/bindings/initial_binding.dart
index 71f6b46..e1046b2 100644
--- a/lib/app/core/bindings/initial_binding.dart
+++ b/lib/app/core/bindings/initial_binding.dart
@@ -1,5 +1,6 @@
 import 'package:get/get.dart';
 import 'package:get_storage/get_storage.dart';
+import 'package:problem_check_system/app/core/controllers/app_controller.dart';
 import 'package:problem_check_system/app/core/services/database_service.dart';
 import 'package:problem_check_system/app/core/services/network_status_service.dart';
 import 'package:problem_check_system/app/core/services/http_provider.dart';
@@ -15,12 +16,12 @@ import 'package:uuid/uuid.dart';
 class InitialBinding implements Bindings {
   @override
   void dependencies() {
-    _registerCoreServices();
+    _registerServices();
     _registerRepositories();
+    _registerControllers();
   }
 
-  void _registerCoreServices() {
-    /// 立即注册所有的适配器
+  void _registerServices() {
     Get.put<GetStorage>(GetStorage(), permanent: true);
     Get.put<Uuid>(Uuid(), permanent: true);
     Get.put<HttpProvider>(HttpProvider());
@@ -53,4 +54,8 @@ class InitialBinding implements Bindings {
       ),
     );
   }
+
+  void _registerControllers() {
+    Get.put(AppController(), permanent: true);
+  }
 }
diff --git a/lib/app/core/controllers/app_controller.dart b/lib/app/core/controllers/app_controller.dart
new file mode 100644
index 0000000..a178c4d
--- /dev/null
+++ b/lib/app/core/controllers/app_controller.dart
@@ -0,0 +1,53 @@
+// lib/app/core/controllers/app_controller.dart (新文件)
+
+import 'package:flutter/material.dart';
+import 'package:get/get.dart';
+import 'package:problem_check_system/app/core/services/network_status_service.dart'; // 导入你的 Service
+
+class AppController extends GetxController {
+  final NetworkStatusService _networkStatusService = Get.find();
+
+  // 用于防止应用启动时就显示“已连接”的提示
+  bool _isFirstCheck = true;
+
+  @override
+  void onInit() {
+    super.onInit();
+
+    // [核心] 使用 GetX 的 'ever' worker 来监听 isOnline 的变化
+    // ever() 会在每次 isOnline.value 改变时调用回调函数
+    ever(_networkStatusService.isOnline, _showConnectivitySnackbar);
+  }
+
+  void _showConnectivitySnackbar(bool isOnline) {
+    // 首次检查时，如果是连接状态则不提示，避免打扰
+    if (_isFirstCheck) {
+      _isFirstCheck = false;
+      if (isOnline) {
+        return; // 启动时在线，静默处理
+      }
+    }
+
+    // 根据网络状态显示不同的 SnackBar
+    if (!isOnline) {
+      Get.snackbar(
+        '网络断开',
+        '请检查您的网络连接',
+        backgroundColor: Colors.red[400],
+        colorText: Colors.white,
+        icon: const Icon(Icons.wifi_off, color: Colors.white),
+        duration: const Duration(seconds: 5), // 网络断开时提示时间更长
+      );
+    } else {
+      // 只有在非首次检查时（即从断开恢复到连接时）才提示
+      Get.snackbar(
+        '网络已连接',
+        '您现在已恢复在线状态',
+        backgroundColor: Colors.green[400],
+        colorText: Colors.white,
+        icon: const Icon(Icons.wifi, color: Colors.white),
+        duration: const Duration(seconds: 3),
+      );
+    }
+  }
+}