first commit

lib/services/shared_prefs_service.dart

@@ -0,0 +1,15 @@
+import 'package:shared_preferences/shared_preferences.dart';
+
+class SharedPrefsService {
+  static Future<void> saveCameraIPs(List<String> cameraIPs) async {
+    SharedPreferences prefs = await SharedPreferences.getInstance();
+    for (int i = 0; i < 6; i++) {
+      prefs.setString('camera_$i', cameraIPs[i]);
+    }
+  }
+
+  static Future<List<String>> loadCameraIPs() async {
+    SharedPreferences prefs = await SharedPreferences.getInstance();
+    return List.generate(6, (index) => prefs.getString('camera_$index') ?? '');
+  }
+}