/**
* GetMonthEndDate
* 根据月头获取月尾日期
*
* @param monthBegin 月头(yyyy-MM-dd HH:mm:ss)
*
* @return NSDate / nil
*/
+(NSDate *) GetMonthEndDate:(NSString *)monthBegin{
if (![monthBegin isEqualToString:@""]){
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setTimeZone:[NSTimeZone timeZoneWithAbbreviation:@"UTC+8"]];
[formatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
NSDateComponents *currentMonth = [[NSDateComponents alloc] init];
currentMonth.month = 1;
NSDate *end = [[NSCalendar currentCalendar] dateByAddingComponents:currentMonth toDate:[formatter dateFromString:monthBegin] options:0];
return end;
}else return nil;
}
/**
* GetWeekForDate
* 根据日期获取星期
*
* @param NSString strDate 日期(yyyy-MM-dd)
*
* @return NSString / empty
*/
+(NSString*) GetWeekForDate:(NSString *) strDate{
if (![strDate isEqualToString:@""]) {
//时间格式化
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
//获取对应时间
[formatter setDateFormat:@"yyyy-MM-dd"];
NSDate *cdate = [formatter dateFromString:strDate];
//获取时间信息
[formatter setDateFormat:@"yyyy-MM-dd EEEE HH:mm:ss a"];
NSString *locationString=[formatter stringFromDate: cdate];
NSArray *arrDate = [locationString componentsSeparatedByString:@" "];
NSString *strWeek = [NSString stringWithFormat:@"%@",[arrDate objectAtIndex:1]];
if ([strWeek isEqualToString:@"Sunday"]) return @"周末";
else if ([strWeek isEqualToString:@"Monday"]) return @"周一";
else if ([strWeek isEqualToString:@"Tuesday"]) return @"周二";
else if ([strWeek isEqualToString:@"Wednesday"])return @"周三";
else if ([strWeek isEqualToString:@"Thursday"]) return @"周四";
else if ([strWeek isEqualToString:@"Friday"]) return @"周五";
else if ([strWeek isEqualToString:@"Saturday"]) return @"周六";
else return @"";
}else return nil;
} //获取时间戳
NSDate *datetime = [NSDate date];
NSTimeZone *zone = [NSTimeZone timeZoneForSecondsFromGMT:8];
NSInteger interval = [zone secondsFromGMTForDate:datetime];
NSDate *localeDate = [datetime dateByAddingTimeInterval: interval];
NSString *unixtime = [NSString stringWithFormat:@"%.f", floor([localeDate timeIntervalSince1970])];http://book.2cto.com/201304/21439.html
http://blog.sina.com.cn/s/blog_4e24d9c501010lu2.html
原文地址：http://blog.csdn.net/yimiyuangguang/article/details/45305843
