未確認だが問題回避のためプッシュ

lib/services/auth_service.dart

@@ -1,6 +1,8 @@
 import 'dart:convert';
 import 'package:http/http.dart' as http;
 import 'package:rogapp/model/auth_user.dart';
+import 'package:get/get.dart';
+import 'package:flutter/material.dart';
 
 import '../utils/const.dart';
 
@@ -90,16 +92,35 @@ class AuthService {
     String url = '$serverUrl/api/login/';
     //print('++++++++$url');
     //String url = 'http://localhost:8100/api/login/';
-    final http.Response response = await http.post(
-      Uri.parse(url),
-      headers: <String, String>{
-        'Content-Type': 'application/json; charset=UTF-8',
-      },
-      body: jsonEncode(<String, String>{'email': email, 'password': password}),
-    );
+    try {
+      final http.Response response = await http.post(
+        Uri.parse(url),
+        headers: <String, String>{
+          'Content-Type': 'application/json; charset=UTF-8',
+        },
+        body: jsonEncode(
+            <String, String>{'email': email, 'password': password}),
+      );
 
-    if (response.statusCode == 200) {
-      cats = json.decode(utf8.decode(response.bodyBytes));
+      if (response.statusCode == 200) {
+        cats = json.decode(utf8.decode(response.bodyBytes));
+      } else {
+        print('Login failed with status code: ${response.statusCode}');
+        cats = {};
+      }
+    } catch( e ){
+      print('Error in login: $e');
+      Get.snackbar("通信エラーがおきました", "サーバーと通信できませんでした");
+      Get.snackbar(
+        "通信エラーがおきました",
+        "サーバーと通信できませんでした",
+        icon: const Icon(
+            Icons.assistant_photo_outlined, size: 40.0, color: Colors.blue),
+        snackPosition: SnackPosition.TOP,
+        duration: const Duration(seconds: 3),
+        backgroundColor: Colors.yellow,
+      );
+      cats = {};
     }
     return cats;
   }