fix set settings

Reviewed-on: #50

covas_mobile_new/lib/pages/EditEvent.dart

@@ -380,8 +380,8 @@ class _EditEventState extends State<EditEvent>
 
     imgUrl = widget.events!.imgUrl ?? "";
     inputDesc.text = widget.events!.description ?? "";
-    initialTags = List<String>.from(widget.events!.tags as List);
-    initialOrga = List<String>.from(widget.events!.organizers as List);
+    initialTags = List<String>.from((widget.events?.tags as List?) ?? []);
+    initialOrga = List<String>.from((widget.events?.organizers as List?) ?? []);
   }
 
   final _formKey = GlobalKey<FormState>();

covas_mobile_new/lib/pages/EditSettings.dart

@@ -48,17 +48,18 @@ class _EditProfileState extends State<EditSettings>
   final AuthService _authService = AuthService();
 
   TextEditingController inputUserName = TextEditingController();
-  int? kilometer;
+  int? kilometer = 50;
 
   Future<void> getParameter() async {
     SharedPreferences prefs = await SharedPreferences.getInstance();
     setState(() {
-      var kilometer = prefs.getDouble("kilometer")?.toInt() ?? null;
+      kilometer = prefs.getDouble("kilometer")?.toInt() ?? 50;
     });
   }
 
   Future<void> setParameter() async {
     SharedPreferences prefs = await SharedPreferences.getInstance();
+    print("kilometer : ${kilometer}");
     if (kilometer != null) {
       prefs.setDouble("kilometer", kilometer?.toDouble() ?? 50);
       showAlertDialog(
@@ -115,8 +116,7 @@ class _EditProfileState extends State<EditSettings>
                           AppLocalizations.of(context)?.define_kilometer ??
                               'Define kilometer',
                     ),
-                    value:
-                        kilometer, // Set the initial selected value here, or leave as `null` if unselected.
+                    value: kilometer,
                     items: [
                       DropdownMenuItem(
                         value: 5,
@@ -155,7 +155,7 @@ class _EditProfileState extends State<EditSettings>
                       color: Colors.blue,
                       borderRadius: BorderRadius.circular(20)),
                   child: TextButton(
-                    onPressed: () {},
+                    onPressed: setParameter,
                     child: Text(
                       AppLocalizations.of(context)?.update ?? "Update",
                       style: TextStyle(color: Colors.white, fontSize: 25),