如何计算NSTimeInterval当日时间的时,分,秒为零点?
我只得到NSTimeInterval :
NSTimeInterval today = [[NSDate date] timeIntervalSince1970];
如何重置为00:00:00?
如何计算NSTimeInterval当日时间的时,分,秒为零点?
我只得到NSTimeInterval :
NSTimeInterval today = [[NSDate date] timeIntervalSince1970];
如何重置为00:00:00?
NSDate *currentDate = [NSDate date];
NSDateComponents *currentDateComponents = [calendar components:NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit fromDate:currentDate];
NSDateComponents *currentDateToMidnight = [[NSDateComponents alloc] init];
[currentDateToMidnight setHour:-[currentDateComponents hour]];
[currentDateToMidnight setMinute:-[currentDateComponents minute]];
[currentDateToMidnight setSecond:-[currentDateComponents second]];
NSDate *midnight = [calendar dateByAddingComponents:currentDateToMidnight toDate:currentDate options:0];
NSTimeInterval todayTimeInterval = [midnight timeIntervalSince1970];