1,是否为今天
NSCalendar *calendar = [NSCalendar currentCalendar];
int unit = NSCalendarUnitDay | NSCalendarUnitMonth | NSCalendarUnitYear;
// 1.获得当前时间的年月日
NSDateComponents *nowCmps = [calendar components:unit fromDate:[NSDate date]];
// 2.获得self的年月日
NSDateComponents *selfCmps = [calendar components:unit fromDate:self];
return
(selfCmps.year == nowCmps.year) &&
(selfCmps.month == nowCmps.month) &&
(selfCmps.day == nowCmps.day);
2,是否为昨天
// 2014-05-01
NSDate *nowDate = [[NSDate date] dateWithYMD];
// 2014-04-30
NSDate *selfDate = [self dateWithYMD];
// 获得nowDate和selfDate的差距
NSCalendar *calendar = [NSCalendar currentCalendar];
NSDateComponents *cmps = [calendar components:NSCalendarUnitDay fromDate:selfDate toDate:nowDate options:0];
return cmps.day == 1;
3,是否为前天
// 2014-05-01
NSDate *nowDate = [[NSDate date] dateWithYMD];
// 2014-04-30
NSDate *selfDate = [self dateWithYMD];
// 获得nowDate和selfDate的差距
NSCalendar *calendar = [NSCalendar currentCalendar];
NSDateComponents *cmps = [calendar components:NSCalendarUnitDay fromDate:selfDate toDate:nowDate options:0];
return cmps.day == 2;
- (NSDate *)dateWithYMD
{
NSDateFormatter *fmt = [[NSDateFormatter alloc] init];
fmt.dateFormat = @"yyyy-MM-dd";
NSString *selfStr = [fmt stringFromDate:self];
return [fmt dateFromString:selfStr];
}
一次不写多了,上次写了很多,居然没有保存,烦死了~~~~!!!
