Android Date Picker Dialog With Java Time (Kotlin)
July 24, 2018JavaDatePickerDialog
class JavaDatePickerDialog : DialogFragment() {
private var onDateSetListener: DatePickerDialog.OnDateSetListener? = null
lateinit var localDate: LocalDate
var onOk: ((date: LocalDate) -> Unit)? = null
var onCancel: (() -> Unit)? = null
companion object {
private const val TAG = "JavaDatePickerDialog"
private const val EXTRA_DATE = "date"
fun newInstance(date: LocalDate? = null): JavaDatePickerDialog {
val dialog = JavaDatePickerDialog()
val args = Bundle().apply {
putSerializable(EXTRA_DATE, date)
/*
date?.also {
putLong(EXTRA_DATE, it.atStartOfDay(ZoneId.systemDefault()).toEpochSecond())
}
*/
}
dialog.arguments = args
return dialog
}
}
override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
localDate = arguments?.getSerializable(EXTRA_DATE) as LocalDate? ?: LocalDate.now()
val year = localDate.year
val month = localDate.monthValue - 1
val day = localDate.dayOfMonth
val listener = DatePickerDialog.OnDateSetListener { view, year, monthOfYear, dayOfMonth ->
this.localDate = LocalDate.of(year, monthOfYear + 1, dayOfMonth)
onOk?.invoke(localDate)
}
val dialog = DatePickerDialog(activity!!, listener, year, month, day)
dialog.setOnCancelListener {
onCancel?.invoke()
}
return dialog
}
}
Usage
val now = LocalDateTime.now()
val dialog = JavaDatePickerDialog.newInstance(date=now.toLocalDate())
dialog.onOk = { date ->
// do something
}
dialog.show(supportFragmentManager, "editDate")
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