直接上代码，传入一个NSString类型的日期

格式如newsDate = @"2013-08-09 17:01";

或者newsDate = @"2013/08/09 17:01";

返回如果有一个月，就不返回天，依次类推。

-(NSString *)getUTCFormateDate:(NSString *)newsDate

{

// newsDate = @"2013-08-09 17:01";

NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];

[dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm"];

NSLog(@"newsDate = %@",newsDate);

NSDate *newsDateFormatted = [dateFormatter dateFromString:newsDate];

NSTimeZone *timeZone = [NSTimeZone timeZoneWithName:@"UTC"];

[dateFormatter setTimeZone:timeZone];

NSDate* current_date = [[NSDate alloc] init];

NSTimeInterval time=[current_date timeIntervalSinceDate:newsDateFormatted];//间隔的秒数

int month=((int)time)/(3600*24*30);

int days=((int)time)/(3600*24);

int hours=((int)time)%(3600*24)/3600;

int minute=((int)time)%(3600*24)/60;

NSLog(@"time=%d",(double)time);

NSString *dateContent;

if(month!=0){

dateContent = [NSString stringWithFormat:@"%@%i%@",@" ",month,@"个月前"];

}else if(days!=0){

dateContent = [NSString stringWithFormat:@"%@%i%@",@" ",days,@"天前"];

}else if(hours!=0){

dateContent = [NSString stringWithFormat:@"%@%i%@",@" ",hours,@"小时前"];

}else {

dateContent = [NSString stringWithFormat:@"%@%i%@",@" ",minute,@"分钟前"];

}

// NSString *dateContent=[[NSString alloc] initWithFormat:@"%i天%i小时",days,hours];

[current_date release];

[dateFormatter release];

return dateContent;

}