How to change first day of week start from Monday

[rensamatar]

I need to change first day of the week from Sunday to Monday. Where I can edit the code.

[dandragut]

It seems to be controlled by locale used which you can pass to the library:

Locale locale = new Locale("en", "GB");
CalendarPickerView calendarPickerView = view.findViewById(R.id.calendar_view);
calendarPickerView.init(minDate, maxDate, locale)
      ...;

Or if you want to change the library, see CalendarPickerView.getMonthCells()

  List<List<MonthCellDescriptor>> getMonthCells(MonthDescriptor month, Calendar startCal) {
    Calendar cal = Calendar.getInstance(timeZone, locale);
    ...
    int firstDayOfWeek = cal.get(DAY_OF_WEEK);
    int offset = cal.getFirstDayOfWeek() - firstDayOfWeek;
    if (offset > 0) {
      offset -= 7;
    }
    ...