Two-way adapter for `DatePicker` when using ThreeTenAbp

DatePickerBindingAdapter.kt

@BindingAdapter("date")
fun setDate(datePicker: DatePicker, value: LocalDate) {
    if (value != LocalDate.of(datePicker.year, datePicker.month + 1, datePicker.dayOfMonth)) {
        datePicker.updateDate(value.year, value.monthValue - 1, value.dayOfMonth)
    }
}

@BindingAdapter(value = ["dateAttrChanged", "onDateChanged"], requireAll = false)
fun setDateChangeListener(
    datePicker: DatePicker,
    listener: InverseBindingListener?,
    changeListener: DatePicker.OnDateChangedListener?
) {
    if (listener != null || changeListener != null) {
        val date = LocalDate.of(datePicker.year, datePicker.month + 1, datePicker.dayOfMonth)
        datePicker.init(date.year, date.monthValue - 1, date.dayOfMonth) { _, _, _, _ ->
            listener?.onChange()
            changeListener?.onDateChanged(datePicker, date.year, date.monthValue - 1, date.dayOfMonth)
        }
    }
}

@InverseBindingAdapter(attribute = "date")
fun getDate(datePicker: DatePicker): LocalDate =
    LocalDate.of(datePicker.year, datePicker.month + 1, datePicker.dayOfMonth)

@BindingAdapter("minDate")
fun setMinDate(datePicker: DatePicker, value: LocalDate) {
    datePicker.minDate = value.atStartOfDay().atZone(ZoneId.systemDefault()).toInstant().toEpochMilli()
}