NSStringEncoding enc = CFStringConvertEncodingToNSStringEncoding(kCFStringEncodingISOLatin1);//ISO 8859-1 HF_content = [HF_content stringByReplacingPercentEscapesUsingEncoding:enc];
NSStringEncoding enc = CFStringConvertEncodingToNSStringEncoding(kCFStringEncodingISOLatin1);//ISO 8859-1 HF_content = [HF_content stringByReplacingPercentEscapesUsingEncoding:enc];