Added dismiss button

lib/service/notifying.dart

@@ -8,15 +8,32 @@ class Notifying {
     required String text,
     bool isError = false,
   }) {
+    ScaffoldMessenger.of(context).hideCurrentSnackBar();
     ScaffoldMessenger.of(context).showSnackBar(
       SnackBar(
         backgroundColor: Theme.of(context).colorScheme.error,
-        content: Text(
+        content: SizedBox(
+          height: 30,
+          child: Row(
+            mainAxisAlignment: MainAxisAlignment.spaceBetween,
+            children: [
+              Text(
                 text,
                 style: isError
                     ? TextStyle(color: Theme.of(context).colorScheme.onError)
                     : null,
               ),
+              IconButton(
+                onPressed: () =>
+                    ScaffoldMessenger.of(context).hideCurrentSnackBar(),
+                icon: Icon(
+                  Icons.close_rounded,
+                  color: Theme.of(context).colorScheme.onError,
+                ),
+              ),
+            ],
+          ),
+        ),
       ),
     );
   }