Android Utililty Methods Day Compare

Checks if two date objects are on the same day ignoring time.

28 Mar 2002 13:45 and 28 Mar 2002 06:01 would return true.

if (date1 == null || date2 == null) {
    throw new IllegalArgumentException("The date must not be null");
Calendar cal1 = Calendar.getInstance();
cal1.setTime(date1);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date2);
return isSameDay(cal1, cal2);
...

Checks if two calendar objects are on the same day ignoring time.

28 Mar 2002 13:45 and 28 Mar 2002 06:01 would return true.

if (cal1 == null || cal2 == null) {
    throw new IllegalArgumentException("The date must not be null");
return (cal1.get(Calendar.ERA) == cal2.get(Calendar.ERA)
        && cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR) && cal1
            .get(Calendar.DAY_OF_YEAR) == cal2
        .get(Calendar.DAY_OF_YEAR));

final Calendar logDate = Calendar.getInstance();
logDate.setTimeInMillis(date);
logDate.set(Calendar.SECOND, 0);
logDate.set(Calendar.MINUTE, 0);
logDate.set(Calendar.HOUR_OF_DAY, 0);
final Calendar today = Calendar.getInstance();
today.set(Calendar.SECOND, 0);
today.set(Calendar.MINUTE, 0);
...

Calendar cal1 = Calendar.getInstance();
cal1.setTimeInMillis(lTime1);
Calendar cal2 = Calendar.getInstance();
cal2.setTimeInMillis(lTime2);
return cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR)
        && cal1.get(Calendar.DAY_OF_YEAR) == cal2
                .get(Calendar.DAY_OF_YEAR);

int daysAgo = 0;
char charAt0 = fromDay.charAt(0);
char charAt1 = fromDay.charAt(1);
String sDay = "" + charAt0 + charAt1;
sDay = sDay.trim();
int fromDayInt = Integer.valueOf(sDay);
if (fromDayInt >= toOlderDay) { 
    return fromDayInt - toOlderDay; 
...

Date last = new Date(lastScan);
Date now = new Date();
long lastlong = Date.UTC(last.getYear(), last.getMonth(),
        last.getDay(), 0, 0, 0);
long nowlong = Date.UTC(now.getYear(), now.getMonth(),
        now.getDay(), 0, 0, 0);
return lastlong != nowlong;