In the end I've created ViewAction that is able to set the time too, but its messy, as you have to know classname of view in the dialog, to have something to match with Matcher.
/**
* Returns a {@link ViewAction} that sets a date on a {@link DatePicker}.
*/
public static ViewAction setDate(final int year, final int monthOfYear, final int dayOfMonth) {
return new ViewAction() {
@Override
public void perform(UiController uiController, View view) {
final DayPickerView dayPickerView = (DayPickerView) view;
try {
Field f = null; //NoSuchFieldException
f = DayPickerView.class.getDeclaredField("mController");
f.setAccessible(true);
DatePickerController controller = (DatePickerController) f.get(dayPickerView); //IllegalAccessException
controller.onDayOfMonthSelected(year, monthOfYear, dayOfMonth);
} catch (NoSuchFieldException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}
}
@Override
public String getDescription() {
return "set date";
}
@SuppressWarnings("unchecked")
@Override
public Matcher<View> getConstraints() {
return allOf(isAssignableFrom(DayPickerView.class), isDisplayed());
}
};
}
/**
* Returns a {@link ViewAction} that sets a time on a {@link TimePicker}.
*/
public static ViewAction setTime(final int hours, final int minutes) {
return new ViewAction() {
@Override
public void perform(UiController uiController, View view) {
final RadialPickerLayout timePicker = (RadialPickerLayout) view;
timePicker.setTime(new Timepoint(hours, minutes, 0));
}
@Override
public String getDescription() {
return "set time";
}
@SuppressWarnings("unchecked")
@Override
public Matcher<View> getConstraints() {
return allOf(isAssignableFrom(RadialPickerLayout.class), isDisplayed());
}
};
}
And usage:
onView(isAssignableFrom(DayPickerView.class)).perform(MaterialPickerActions.setDate(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH)));
onView(isAssignableFrom(RadialPickerLayout.class)).perform(MaterialPickerActions.setTime(calendar.get(Calendar.HOUR_OF_DAY), calendar.get(Calendar.MINUTE)));