时间戳转化时间和星期

 //时间戳转化时间(10位时间戳)    NSDateFormatter* formatter = [[NSDateFormatter alloc] init];    [formatter setDateFormat:@"yyyy-MM-dd"];    NSDate *confromTimesp = [NSDate dateWithTimeIntervalSince1970: 1446768000];    NSString *confromTimespStr = [formatter stringFromDate:confromTimesp];//时间戳转化时间(13位时间戳)NSString * timeStampString = [NSString stringWithFormat:@"%ld",self.videoModel.date];    NSTimeInterval _interval=[timeStampString doubleValue] / 1000.0;    NSDate *date = [NSDate dateWithTimeIntervalSince1970:_interval];    NSDateFormatter* formatter = [[NSDateFormatter alloc] init];    [formatter setDateFormat:@"yyyyMMdd"];    NSString *currentTime = [formatter stringFromDate:date];    NSLog(@"%@", currentTime);[self GetTime];-(void)GetTime{    NSString* string = @"2015-11-06 08:00";    NSDateFormatter *inputFormatter = [[NSDateFormatter alloc] init];    [inputFormatter setDateFormat:@"yyyy-MM-dd HH:mm"];    NSDate* inputDate = [inputFormatter dateFromString:string];    NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian];    NSDateComponents *comps = [[NSDateComponents alloc] init];    NSInteger unitFlags = NSCalendarUnitYear |    NSCalendarUnitMonth |    NSCalendarUnitDay |    NSCalendarUnitWeekday |    NSCalendarUnitHour |    NSCalendarUnitMinute |    NSCalendarUnitSecond;    comps = [calendar components:unitFlags fromDate:inputDate];    NSInteger week = [comps weekday];    NSString *strWeek = [self getweek:week];    NSLog(@"week is:%@",strWeek);}-(NSString *)getweek:(NSInteger)week{    NSString *weekStr = nil;    if(week == 1)    {        weekStr = @"星期天";    } else if(week == 2) {        weekStr = @"星期一";    } else if(week == 3) {        weekStr = @"星期二";    } else if(week == 4) {        weekStr = @"星期三";    } else if(week == 5) {        weekStr = @"星期四";    } else if(week == 6) {        weekStr=@"星期五";    } else if(week == 7) {        weekStr=@"星期六";    }    return weekStr;}