Android Utililty Methods Date to Long Convert

List of utility methods to do Date to Long Convert

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Description

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

Method

LongparseDateToLong(String dateString)
parse Date To Long, "yyyy-MM-dd HH:mm" 
if (StringUtils.isEmpty(dateString) || dateString.equals("0")) {
    return 0L;
Date date = parseDate(dateString);
if (date == null) {
    return null;
} else {
    return date.getTime();
...
longparseDateToLong2(String dateString)
parse Date To Long, "yyyy-MM-dd" 
SimpleDateFormat sdf = new SimpleDateFormat(FORMAT_DATE_YYYY_MM_DD);
Date date;
try {
    date = sdf.parse(dateString);
    return date.getTime();
} catch (ParseException e) {
    e.printStackTrace();
return 0;
StringparseDateToLongString(String dateString)
parse Date To Long String, "yyyy-MM-dd HH:mm" 
if (StringUtils.isEmpty(dateString)) {
    return "";
Long dateLong = parseDateToLong(dateString);
if (dateLong == null) {
    return null;
} else {
    return String.valueOf(dateLong);
...
longgeLongFromString(final String date)
ge Long From String 
final Calendar calendar = getCalendarFromString(date);
return calendar.getTimeInMillis();
longgetTime(String dateString)
get Time 
SimpleDateFormat formatter = new SimpleDateFormat(
        "yyyy-MM-dd HH:mm:ss");
try {
    Date date = formatter.parse(dateString);
    return date.getTime();
} catch (ParseException e) {
    e.printStackTrace();
return SystemClock.elapsedRealtime();
longdosToJavaTime(long dosTime)
Converts DOS time to Java time (number of milliseconds since epoch). 
Calendar cal = Calendar.getInstance();
cal.set(Calendar.YEAR, (int) ((dosTime >> 25) & 0x7f) + 1980);
cal.set(Calendar.MONTH, (int) ((dosTime >> 21) & 0x0f) - 1);
cal.set(Calendar.DATE, (int) (dosTime >> 16) & 0x1f);
cal.set(Calendar.HOUR_OF_DAY, (int) (dosTime >> 11) & 0x1f);
cal.set(Calendar.MINUTE, (int) (dosTime >> 5) & 0x3f);
cal.set(Calendar.SECOND, (int) (dosTime << 1) & 0x3e);
return cal.getTime().getTime();
...
longdosToJavaTme(int dosTime)
Converts time in dos format to Java format 
int sec = 2 * (dosTime & 0x1f);
int min = (dosTime >> 5) & 0x3f;
int hrs = (dosTime >> 11) & 0x1f;
int day = (dosTime >> 16) & 0x1f;
int mon = ((dosTime >> 21) & 0xf) - 1;
int year = ((dosTime >> 25) & 0x7f) + 1980;
Calendar cal = Calendar.getInstance();
cal.set(year, mon, day, hrs, min, sec);
...
longgetDateLong(Date date)
get Date Long 
if (date == null) {
    return 0;
} else {
    return date.getTime();