How to open previously selected date in MaterialDatePicker?

Question

This is the code that i am using :

 val picker = builder
    .setTitleText(getText(R.string.select_start_date_and_end_date))
    .setSelection(Pair((selectedStartDate ?: calendar.timeInMillis), (selectedEndDate ?: 
     calendar.timeInMillis)))
    .setTheme(AppUtils.resolveOrThrow(requireContext(), R.attr.materialCalendarTheme))
    .setInputMode(MaterialDatePicker.INPUT_MODE_CALENDAR)
    .setCalendarConstraints(constraintsBuilder)
    .build()
 picker.show(parentFragmentManager, picker.toString())

While on click of positive button i am storing data as long value like this :

picker.addOnPositiveButtonClickListener {
    selectedStartDate = it.first ?: 0
    selectedEndDate = it.second ?: 0
}

Here selectedStartDate and selectedEndDate are long variables. but calendar is not opening with previously selected dates.

https://stackoverflow.com/questions/61661948/materialdatepicker-shows-current-date-instead-of-needed — Gabriele Mariotti, May 28 '20 at 22:03

score 1 · Answer 1 · answered Apr 25 '20 at 07:22

I found the answer.

 val dateValidator: CalendarConstraints.DateValidator = DateValidatorPointForward.now()
    val builder = MaterialDatePicker.Builder.dateRangePicker()
    val constraintsBuilder =
        CalendarConstraints.Builder().setStart(calendar.timeInMillis)
            .setOpenAt((selectedStartDate ?: calendar.timeInMillis))
            .setValidator(dateValidator).build()

    val picker = builder
        .setTitleText(getText(R.string.select_start_date_and_end_date))
        .setSelection(
            Pair(
                (selectedStartDate ?: calendar.timeInMillis),
                (selectedEndDate ?: calendar.timeInMillis)
            )
        )
        .setTheme(AppUtils.resolveOrThrow(requireContext(), R.attr.materialCalendarTheme))
        .setInputMode(MaterialDatePicker.INPUT_MODE_CALENDAR)
        .setCalendarConstraints(constraintsBuilder)
        .build()
    picker.show(parentFragmentManager, picker.toString())

    picker.addOnPositiveButtonClickListener {

        selectedStartDate = it.first ?: 0
        selectedEndDate = it.second ?: 0

        setStartAndEndDate(selectedStartDate, selectedEndDate)
    }

There was a method openAt(). Thanks.

How to open previously selected date in MaterialDatePicker?

1 Answers1