[iOS]NSString to NSData, NSData to NSString

요근래 한 10번은 쓴거 같은데 자꾸 까먹어서 정리

 

NSString* numberString = @"111111111";

NSData* numberData = [numberStringdataUsingEncoding:NSUTF8StringEncoding];

numberString = [[NSString alloc] initWithData:dencryptedDataencoding:NSUTF8StringEncoding];

NSLog(@"number = %@",numberString");