解决方法
我确信有更好,更聪明的方法来做到这一点,但这个解决方案确实有效.
Nsstring * str = @"68656C6C6F"; NSMutableString * newString = [[[NSMutableString alloc] init] autorelease]; int i = 0; while (i < [str length]) { Nsstring * hexChar = [str substringWithRange: NSMakeRange(i,2)]; int value = 0; sscanf([hexChar cStringUsingEncoding:NSASCIIStringEncoding],"%x",&value); [newString appendFormat:@"%c",(char)value]; i+=2; }