/**
 * Sets the current, min, and max values on the given DatePicker and ensures that
 * min <= current <= max, adjusting current and max if needed.
 *
 * @param year The current year to set.
 * @param month The current month to set. 0-based.
 * @param day The current day to set.
 * @param minMillisUtc The minimum allowed date, in milliseconds from the epoch according to a
 *                     proleptic Gregorian calendar (no Julian switch).
 * @param maxMillisUtc The maximum allowed date, in milliseconds from the epoch according to a
 *                     proleptic Gregorian calendar (no Julian switch).
 */
public static void normalize(DatePicker picker, final OnDateChangedListener listener,
        int year, int month, int day, long minMillisUtc, long maxMillisUtc) {
    DateAndMillis currentDate = DateAndMillis.create(year, month, day);
    DateAndMillis minDate = DateAndMillis.create(minMillisUtc);
    DateAndMillis maxDate = DateAndMillis.create(maxMillisUtc);

    // Ensure min <= current <= max, adjusting current and max if needed.
    if (maxDate.millisForPicker < minDate.millisForPicker) {
        maxDate = minDate;
    }
    if (currentDate.millisForPicker < minDate.millisForPicker) {
        currentDate = minDate;
    } else if (currentDate.millisForPicker > maxDate.millisForPicker) {
        currentDate = maxDate;
    }

    setLimits(picker, currentDate.millisForPicker, minDate.millisForPicker,
            maxDate.millisForPicker);
    picker.init(currentDate.year, currentDate.month, currentDate.day, listener);
}
 

/**
 * Normalizes an existing DateDialogPicker changing the default date if
 * needed to comply with the {@code min} and {@code max} attributes.
 */
static void normalize(DatePicker picker, OnDateChangedListener listener,
        int year, int month, int day, int hour, int minute, long min, long max) {
    Calendar calendar = Calendar.getInstance(TimeZone.getTimeZone("GMT"));
    calendar.clear();
    calendar.set(year, month, day, hour, minute, 0);
    if (calendar.getTimeInMillis() < min) {
        calendar.clear();
        calendar.setTimeInMillis(min);
    } else if (calendar.getTimeInMillis() > max) {
        calendar.clear();
        calendar.setTimeInMillis(max);
    }
    picker.init(
            calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH),
            calendar.get(Calendar.DAY_OF_MONTH), listener);

    setLimits(picker, min, max);
}
 

/**
 * Normalizes an existing DateDialogPicker changing the default date if
 * needed to comply with the {@code min} and {@code max} attributes.
 */
static void normalize(DatePicker picker, OnDateChangedListener listener,
        int year, int month, int day, int hour, int minute, long min, long max) {
    Calendar calendar = Calendar.getInstance(TimeZone.getTimeZone("GMT"));
    calendar.clear();
    calendar.set(year, month, day, hour, minute, 0);
    if (calendar.getTimeInMillis() < min) {
        calendar.clear();
        calendar.setTimeInMillis(min);
    } else if (calendar.getTimeInMillis() > max) {
        calendar.clear();
        calendar.setTimeInMillis(max);
    }
    picker.init(
            calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH),
            calendar.get(Calendar.DAY_OF_MONTH), listener);

    setLimits(picker, min, max);
}
 

/**
 * Create and return the user interface view for this fragment.
 */
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState)
{
    int theme = getArguments().getInt("theme");
    int initialYear = getArguments().getInt("year");
    int initialMonth = getArguments().getInt("month");
    int initialDay = getArguments().getInt("day");
    Date minDate = (Date) getArguments().getSerializable("minDate");
    Date maxDate = (Date) getArguments().getSerializable("maxDate");

    // Unless we inflate using a cloned inflater with a Holo theme,
    // on Lollipop devices the DatePicker will be the new-style
    // DatePicker, which is not what we want. So we will
    // clone the inflater that we're given but with our specified
    // theme, then inflate the layout with this new inflater.

    Context contextThemeWrapper = new ContextThemeWrapper(
            getActivity(),
            theme == SlideDateTimePicker.HOLO_DARK ?
                     android.R.style.Theme_Holo :
                     android.R.style.Theme_Holo_Light);

    LayoutInflater localInflater = inflater.cloneInContext(contextThemeWrapper);

    View v = localInflater.inflate(R.layout.fragment_date, container, false);

    mDatePicker = (CustomDatePicker) v.findViewById(R.id.datePicker);
    // block keyboard popping up on touch
    mDatePicker.setDescendantFocusability(DatePicker.FOCUS_BLOCK_DESCENDANTS);
    mDatePicker.init(
        initialYear,
        initialMonth,
        initialDay,
        new OnDateChangedListener() {

            @Override
            public void onDateChanged(DatePicker view, int year,
                    int monthOfYear, int dayOfMonth)
            {
                mCallback.onDateChanged(year, monthOfYear, dayOfMonth);
            }
        });

    if (minDate != null)
        mDatePicker.setMinDate(minDate.getTime());

    if (maxDate != null)
        mDatePicker.setMaxDate(maxDate.getTime());

    return v;
}