DatePickerFragment SelectedValue Xamarin.Android - xamarin.android

Question

I want to pick a date in a DatePickerFragment in xamarin android like this:
DatePickerFragment frag = DatePickerFragment.NewInstance(delegate(DateTime time)
{
LoadMap(time.ToString("yyyy-MM-dd"));
});
frag.Show(FragmentManager, DatePickerFragment.TAG);
Meanwhile the DatePickerFragment Class is like this:
public class DatePickerFragment : Android.Support.V4.App.DialogFragment,
DatePickerDialog.IOnDateSetListener
{
// TAG can be any string of your choice.
public static readonly string TAG = "X:" + typeof(DatePickerFragment).Name.ToUpper();
// Initialize this value to prevent NullReferenceExceptions.
Action<DateTime> _dateSelectedHandler = delegate { };
public static DatePickerFragment NewInstance(Action<DateTime> onDateSelected)
{
DatePickerFragment frag = new DatePickerFragment();
frag._dateSelectedHandler = onDateSelected;
return frag;
}
public override Dialog OnCreateDialog(Bundle savedInstanceState)
{
DateTime currently = DateTime.Now;
DatePickerDialog dialog = new DatePickerDialog(Activity,
this,
currently.Year,
currently.Month - 1,
currently.Day);
return dialog;
}
public void OnDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth)
{
// Note: monthOfYear is a value between 0 and 11, not 1 and 12!
DateTime selectedDate = new DateTime(year, monthOfYear + 1, dayOfMonth);
Log.Debug(TAG, selectedDate.ToLongDateString());
_dateSelectedHandler(selectedDate);
}
}
The problem is that everytime i try to pick a date, the datepicker shows only today, it happens cause of DateTime currently = DateTime.Now;. How can I change this, so the Datepicker stores the last selected date?

Answer 1

I resolved by declaring static selectedDate = DateTime.Today; in the DatePickerFragment Class, full class below:
public class DatePickerFragment : Android.Support.V4.App.DialogFragment, DatePickerDialog.IOnDateSetListener
{
// TAG can be any string of your choice.
public static readonly string TAG = "X:" + typeof(DatePickerFragment).Name.ToUpper();
// Initialize this value to prevent NullReferenceExceptions.
Action<DateTime> _dateSelectedHandler = delegate { };
private static DateTime selectedDate = DateTime.Today;
public static DatePickerFragment NewInstance(Action<DateTime> onDateSelected)
{
DatePickerFragment frag = new DatePickerFragment();
frag._dateSelectedHandler = onDateSelected;
return frag;
}
public override Dialog OnCreateDialog(Bundle savedInstanceState)
{
DateTime currently = selectedDate;
DatePickerDialog dialog = new DatePickerDialog(Activity,
this,
currently.Year,
currently.Month - 1,
currently.Day);
return dialog;
}
public void OnDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth)
{
// Note: monthOfYear is a value between 0 and 11, not 1 and 12!
selectedDate = new DateTime(year, monthOfYear + 1, dayOfMonth);
Log.Debug(TAG, selectedDate.ToLongDateString());
_dateSelectedHandler(selectedDate);
}
}