Integer
convertHour(Long createAt) convert Hour
Calendar cal = Calendar.getInstance();
cal.setTimeInMillis(createAt);
return cal.get(Calendar.HOUR);
long
delayBeforeNextHour() delay Before Next Hour
return nextHour().getTime() - System.currentTimeMillis();
int
get24Hour() get Hour
return calendar.get(Calendar.HOUR_OF_DAY);
long
getAlarmOnQuarterHour() Setup to find out when the quarter-hour changes (e.g.
Calendar nextQuarter = Calendar.getInstance();
nextQuarter.set(Calendar.SECOND, 1);
nextQuarter.set(Calendar.MILLISECOND, 0);
int minute = nextQuarter.get(Calendar.MINUTE);
nextQuarter.add(Calendar.MINUTE, 15 - (minute % 15));
long alarmOnQuarterHour = nextQuarter.getTimeInMillis();
long now = System.currentTimeMillis();
long delta = alarmOnQuarterHour - now;
...
Calendar
getAnHourBack() get An Hour Back
return getAnHourBack(new Date());
String
getBeforeOneHour() get Before One Hour
Calendar cal = Calendar.getInstance();
cal.setTime(new Date());
return String.valueOf(cal.get(Calendar.HOUR_OF_DAY) == 0 ? 23 : cal.get(Calendar.HOUR_OF_DAY) - 1);
Calendar
getCalenderWithHour(int hours) get Calender With Hour
Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
cal.add(Calendar.HOUR, hours);
return cal;
String
getCurrentHour() get Current Hour
Calendar calendar;
calendar = new GregorianCalendar();
String hour = Integer.toString(calendar.get(Calendar.HOUR_OF_DAY));
return hour;
Date
getCurrentHour() get Current Hour
Calendar cal = Calendar.getInstance();
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND, 0);
return cal.getTime();
float
getCurrentHour() get Current Hour
Calendar cal = Calendar.getInstance();
return cal.get(Calendar.HOUR_OF_DAY) + cal.get(Calendar.MINUTE) / 60f;