add cache for latitude and use in searchdelagate

covas_mobile/lib/pages/ListItemMenu.dart

@@ -367,7 +367,11 @@ class _MyHomePageState extends State<ListItemMenu> {
               border: OutlineInputBorder(),
               suffixIcon: IconButton(
                 icon: const Icon(Icons.clear),
-                onPressed: () {
+                onPressed: () async {
+                  SharedPreferences prefs =
+                      await SharedPreferences.getInstance();
+                  prefs.remove("city_lat");
+                  prefs.remove("city_long");
                   setState(() {
                     Datepicker.text = '';
                   });
@@ -464,7 +468,7 @@ class _MyHomePageState extends State<ListItemMenu> {
             onPressed: () {
               showSearch(
                 context: context,
-                delegate: SearchDelegateExample(geoQuery: inputGeo.text),
+                delegate: SearchDelegateExample(),
               );
             },
           ),