Android Utililty Methods Long to Date Convert

List of utility methods to do Long to Date Convert

  1. HOME
  2. Android
  3. L
  4. Long to Date Convert

Description

The list of methods to do Long to Date Convert are organized into topic(s).

Method

StringtimestampToIso8601Str(long timestamp)
timestamp To Iso Str 
return javaDateToIso8601(timestampToDate(timestamp));
StringtimestampToIso8601Str(long timestamp)
timestamp To Iso Str 
return javaDateToIso8601(timestampToDate(timestamp));
CalendartoCalendar(long hour)
to Calendar 
Calendar calNow = Calendar.getInstance();
Calendar calSet = (Calendar) calNow.clone();
calSet.set(Calendar.HOUR_OF_DAY, calNow.get(Calendar.HOUR_OF_DAY));
calSet.set(Calendar.MINUTE, calNow.get(Calendar.MINUTE));
calSet.set(Calendar.SECOND, calNow.get(Calendar.SECOND) + 3);
calSet.set(Calendar.MILLISECOND, 0);
return calSet;
StringtoDateString(long seconds)
to Date String 
return formatter.format(new Date(seconds * 1000L));
StringtoFullDate(long timestamp)
Convert a timestamp from the system timezone to "yyyy-mm-dd HH:mm:ss" 
Date date = new Date(timestamp);
return toFullDate(date);
StringtoIso8601(long date, boolean utc)
Formats a date / time according to the ISO 8601 format, optionally forcing to UTC. 
if (utc) {
    return DATE_FORMAT_ISO8601_UTC.format(date);
return DATE_FORMAT_ISO8601.format(date);
doubletoJulianDay(long epochMillis)
Calculates the astronomical Julian Day for an instant. 
double epochDay = epochMillis / 86400000d;
return epochDay + 2440587.5d;
longtoJulianDayNumber(long epochMillis)
Calculates the astronomical Julian Day Number for an instant. 
return (long) Math.floor(toJulianDay(epochMillis) + 0.5d);
StringtoString(Long datetime)
to String 
String result = new SimpleDateFormat("yyyyMMddHHmmss")
        .format(new Date(datetime));
return result;
StringtoTimeString(long milliseconds)
to Time String 
long secs = milliseconds / 1000;
long mins = secs / 60;
long hours = mins / 60;
secs = secs % 60;
mins = mins % 60;
if (hours > 0) {
    return String.format("%d:%02d:%02d", hours, mins, secs);
return String.format("%d:%02d", mins, secs);