在iPhone中转换日期格式

NSString *yourStringDate = @"Thu, 06 Dec 2012 17:44:22 +0000\n\t\t";
   NSString *str =[yourStringDate stringByReplacingOccurrencesOfString:@"\n" withString:@""];

   str =[str stringByReplacingOccurrencesOfString:@"\t" withString:@""];
   [str retain];

   NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
   [dateFormatter setDateFormat:@"EEE, dd MMM yyyy HH:mm:ss z"];

   NSDate *date = [dateFormatter dateFromString: str];

   dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
   [dateFormatter setDateFormat:@"EEEE,LLLL dd,yyyy"];

   NSString *convertedString = [dateFormatter stringFromDate:date];
   NSLog(@"Converted String : %@",convertedString);

然后输出是: Converted String : Thursday,December 06,2012