Android Time Picker Dialog With Java Time (Kotlin)
May 4, 2019JavaTimePickerDialog
class JavaTimePickerDialog : DialogFragment() {
companion object {
private const val TAG = "JavaTimePickerDialog"
private const val EXTRA_TIME = "time"
fun newInstance(time: LocalTime? = null): JavaTimePickerDialog {
val dialog = JavaTimePickerDialog()
val args = Bundle().apply {
putSerializable(EXTRA_TIME, time)
/*
time?.also {
putLong(EXTRA_TIME, it.atStartOfDay(ZoneId.systemDefault()).toEpochSecond())
}
*/
}
dialog.arguments = args
return dialog
}
}
lateinit var localTime: LocalTime
var onOk: ((time: LocalTime?) -> Unit)? = null
var onCancel: (() -> Unit)? = null
override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
localTime = arguments?.getSerializable(EXTRA_TIME) as LocalTime? ?: run {
val now = LocalTime.now()
LocalTime.of(now.hour, now.minute)
}
val hour = localTime.hour
val minute = localTime.minute
val listener = TimePickerDialog.OnTimeSetListener { view, hourOfDay, minute ->
// if wanted to maintain seconds
// this.localTime = LocalTime.of(hourOfDay, minute, localTime!!.second)
// the following will zerorized second
this.localTime = LocalTime.of(hourOfDay, minute)
onOk?.invoke(localTime)
}
val dialog = TimePickerDialog(activity!!, listener, hour, minute, DateFormat.is24HourFormat(activity))
dialog.setOnCancelListener {
onCancel?.invoke()
}
return dialog
}
}
Usage
val now = LocalDateTime.now()
val dialog = JavaTimePickerDialog.newInstance(time=now.toLocalTime())
dialog.onOk = { time ->
// do something
}
dialog.show(supportFragmentManager, "editTime")
Or you can create a convinient static method.
class JavaTimePickerDialog : DialogFragment() {
companion object {
...
fun show(fragmentManager: FragmentManager, time: LocalTime?, listener: (time: LocalTime?) -> Unit): JavaTimePickerDialog {
val dialog = newInstance(time)
dialog.onOk = listener
dialog.show(fragmentManager, TAG)
return dialog
}
}
...
}
Usage
JavaTimePickerDialog.show(fragmentManager, null) { time ->
// do something
}
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