RxBinding DatePicker and TimePicker

Question

I'm trying to get the values from DatePicker, but I've no idea how could I manage it.

My layout contains a DatePicker element, and I'm using kotlin.

Same problem with TimePicker.

Answer 1

Thanks for Márton Soós

This helper class does the magic for both DatePicker and TimePicker:

data class DatePickerChangeEvent(
        val view: View,
        val year: Int = 0,
        val monthOfYear: Int = 0,
        val dayOfMonth: Int = 0
)

data class TimePickerChangeEvent(
        val view: View,
        val hour: Int,
        val minute: Int
)

 class DatePickerObservable(val view: DatePicker, val year: Int, val monthOfYear: Int, val dayOfMonth: Int)
    : io.reactivex.Observable<DatePickerChangeEvent>() {

    override fun subscribeActual(observer: Observer<in DatePickerChangeEvent>) {
        val listener = DateChangeListener(view, observer)
        observer.onSubscribe(listener)
        view.init(year, monthOfYear, dayOfMonth, listener)
    }

    class DateChangeListener(private val dp: DatePicker, private val obs: io.reactivex.Observer<in DatePickerChangeEvent>)
        : DatePicker.OnDateChangedListener, MainThreadDisposable() {

        override fun onDateChanged(p0: DatePicker, p1: Int, p2: Int, p3: Int) {
            obs.onNext(DatePickerChangeEvent(dp, p1, p2, p3))
        }

        override fun onDispose() {
        }
    }
}

class TimePickerObservable(val view: TimePicker)
    : io.reactivex.Observable<TimePickerChangeEvent>() {

    override fun subscribeActual(observer: Observer<in TimePickerChangeEvent>) {
        val listener = TimeChangeListener(view, observer)
        observer.onSubscribe(listener)
        view.setOnTimeChangedListener(listener)
    }

    class TimeChangeListener(private val tp: TimePicker, private val obs: io.reactivex.Observer<in TimePickerChangeEvent>)
        : TimePicker.OnTimeChangedListener, MainThreadDisposable() {

        override fun onTimeChanged(p0: TimePicker, p1: Int, p2: Int) {
            obs.onNext(TimePickerChangeEvent(p0, p1, p2))
        }

        override fun onDispose() {
            tp.setOnTimeChangedListener { timePicker, i, i2 -> }
        }
    }
}

@Suppress("NOTHING_TO_INLINE")
inline fun DatePicker.dateChange(year: Int, monthOfYear: Int, dayOfMonth: Int): DatePickerObservable =
        DatePickerObservable(this, year, monthOfYear, dayOfMonth)

@Suppress("NOTHING_TO_INLINE")
inline fun TimePicker.timeChange(): TimePickerObservable =
        TimePickerObservable(this)

Than you can call it:

 datePicker.dateChange(2018,9,15)
                .subscribe{
                    Log.d("RxDate", it.toString())
                }