I have a custom linear layout which has DatePicker
and TimePicker
widgets in it. This is used as DateTime
picker. I want to restrict the DatePicker by way of setMaxDate()
and setMinDate()
. I have done:
dp.setMaxDate(new DateTime().minusDays(1).getMillis());
dp.setMinDate(new DateTime().minusDays(30).getMillis());
The dates beyond this range are actually grayed out when the dialog appears. But I can still select a grayed date. I have stumbled upon this. But, what is the work around for a custom layout with datepicker in it?
The Material Components Library provides the MaterialDatePicker
.
You can use a DateValidator
to restrict the selections.
In particular you can use the built-in validators:
DateValidatorPointForward
that enables dates from a given point forwardDateValidatorPointBackward
that enables only dates before a given point.Something like:
MaterialDatePicker.Builder<Pair<Long, Long>> builderRange = MaterialDatePicker.Builder.dateRangePicker();
CalendarConstraints.Builder constraintsBuilderRange = new CalendarConstraints.Builder();
//....define min and max for example with LocalDateTime and ZonedDateTime or Calendar
CalendarConstraints.DateValidator dateValidatorMin = DateValidatorPointForward.from(min.getTimeInMillis());
CalendarConstraints.DateValidator dateValidatorMax = DateValidatorPointBackward.before(max.getTimeInMillis());
ArrayList<CalendarConstraints.DateValidator> listValidators =
new ArrayList<CalendarConstraints.DateValidator>();
listValidators.add(dateValidatorMin);
listValidators.add(dateValidatorMax);
CalendarConstraints.DateValidator validators = CompositeDateValidator.allOf(listValidators);
constraintsBuilderRange.setValidator(validators);
builderRange.setCalendarConstraints(constraintsBuilderRange.build());
MaterialDatePicker<Pair<Long, Long>> pickerRange = builderRange.build();
pickerRange.show(getSupportFragmentManager(), pickerRange.toString());
For future readers!
Actually with new android material design components what you want achieve could be achieved using MaterialDatePicker
. And dates outside the allowed range is not selectable.
Steps
1. Add material dependency to your module's gradle file
implementation 'com.google.android.material:material:1.1.0-beta01'
2. Change app theme to inherit from a version of material theme.
ex:
<style name="AppTheme" parent="Theme.MaterialComponents.Light.NoActionBar">
3. Use following code to initiate the dialog.
class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
setupRangePickerDialog()
}
private fun setupRangePickerDialog() {
val builderRange = MaterialDatePicker.Builder.dateRangePicker()
builderRange.setCalendarConstraints(limitRange().build())
val pickerRange = builderRange.build()
pickerRange.show(supportFragmentManager, pickerRange.toString())
}
/*
Limit selectable range to Oct 17 - Nov 20 2019
*/
private fun limitRange(): CalendarConstraints.Builder {
val constraintsBuilderRange = CalendarConstraints.Builder()
val calendarStart: Calendar = GregorianCalendar.getInstance()
val calendarEnd: Calendar = GregorianCalendar.getInstance()
val year = 2019
calendarStart.set(year, 10, 17)
calendarEnd.set(year, 11, 20)
val minDate = calendarStart.timeInMillis
val maxDate = calendarEnd.timeInMillis
constraintsBuilderRange.setStart(minDate)
constraintsBuilderRange.setEnd(maxDate)
constraintsBuilderRange.setValidator(RangeValidator(minDate, maxDate))
return constraintsBuilderRange
}
}
class RangeValidator(private val minDate:Long, private val maxDate:Long) : CalendarConstraints.DateValidator{
constructor(parcel: Parcel) : this(
parcel.readLong(),
parcel.readLong()
)
override fun writeToParcel(dest: Parcel?, flags: Int) {
TODO("not implemented")
}
override fun describeContents(): Int {
TODO("not implemented")
}
override fun isValid(date: Long): Boolean {
return !(minDate > date || maxDate < date)
}
companion object CREATOR : Parcelable.Creator<RangeValidator> {
override fun createFromParcel(parcel: Parcel): RangeValidator {
return RangeValidator(parcel)
}
override fun newArray(size: Int): Array<RangeValidator?> {
return arrayOfNulls(size)
}
}
}
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With