customDatePicker function
Future<DateTime> customDatePicker ({required DateTime initialDate})
<p>Shows a dialog containing a Material Design date picker.</p> <p>The returned Future resolves to the date selected by the user when the user confirms the dialog. If the user cancels the dialog, null is returned.</p>
Implementation
Future\<DateTime\> customDatePicker(\{required DateTime initialDate\}) async \{
showDatePicker which shows a material design date range picker used to select a range of dates.
final DateTime? picked = await showDatePicker(
context: navigationService.navigatorKey.currentContext!,
initialDate: initialDate,
firstDate: DateTime(2015, 8),
lastDate: DateTime(2101),
);
if (picked != null && picked != initialDate) \{
return picked;
\}
return initialDate;
\}