时间的判断

- (BOOL)isDate:(NSDate *)date1 inSameDayAsDate:(NSDate *)date2

 - (BOOL)isDateInToday:(NSDate *)date; //判断一个日期是否是今天

 - (BOOL)isDateInYesterday:(NSDate *)date; //判断一个日期是否是昨天

 - (BOOL)isDateInTomorrow:(NSDate *)date;//判断一个日期是否是明天
 - (BOOL)isDateInWeekend:(NSDate *)date ; //判断一个日期是否是属于周末双休日


    NSString *dateStr = @"";
    NSDate *date = [NSDate dateWithTimeIntervalSince1970:timeSp];
    NSCalendar *currentCalendar = [NSCalendar currentCalendar];
    if ([currentCalendar isDateInToday:date]) {//判断是不是今天
        dateStr = @"今天";
    }else if ([currentCalendar isDateInYesterday:date]){//判断是不是昨天
        dateStr = @"昨天";
    }else if ([currentCalendar isDateInTomorrow:date]){//判断是不是明天
        dateStr = @"明天";
    }else{
        dateStr = [DDTools time_timestampToString:timeSp format:@"yyyy-MM-dd"];
    }


    
    NSUInteger unitFlags = NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay | NSCalendarUnitHour | NSCalendarUnitMinute | NSCalendarUnitSecond;
    NSDateComponents *dateComponent = [currentCalendar components:unitFlags fromDate:date];
     
    NSInteger year = [dateComponent year];
    NSInteger month = [dateComponent month];
    NSInteger day = [dateComponent day];
    NSInteger hour = [dateComponent hour];
    NSInteger minute = [dateComponent minute];
    NSInteger second = [dateComponent second];
    
    NSLog(@"year=%ld month=%ld day=%ld hour=%ld minute=%ld second=%ld",(long)year,month,day,hour,minute,second);