NSXMLParser problem with “&”(Ampersand) character

Question

My NSXMLParsing is not working because of \"&\" character.. my code s below .any help please ?

 NSString *myRequestString = [NSString stringWithFormat:@         


        

Answer 1

Replace

NSString *str = [[NSString alloc] initWithData:downloadedData encoding:NSASCIIStringEncoding];
//NSString *contentString = [str stringByReplacingOccurrencesOfString:@"&" withString:@"&"];
NSData * data=[str dataUsingEncoding:NSUTF8StringEncoding];

With:

NSString *str = [[NSString alloc] initWithData:downloadedData encoding:NSASCIIStringEncoding];
NSString *contentString = [str stringByReplacingOccurrencesOfString:@"&" withString:@"&"];
NSData * data=[contentString dataUsingEncoding:NSUTF8StringEncoding];

Answer 2

Very similar to sepehr-mahmoudian's answer, but instead of replace any & you should really just replace & characters that are unescaped, to do this you can use a regexp:

NSString *str = [[NSString alloc] initWithData:downloadedData encoding:NSASCIIStringEncoding];
//NSString *contentString = [str stringByReplacingOccurrencesOfString:@"&" withString:@"&"];
NSData * data=[str dataUsingEncoding:NSUTF8StringEncoding];

With:

NSString *str = [[NSString alloc] initWithData:downloadedData encoding:NSASCIIStringEncoding];

NSRange searchedRange = NSMakeRange(0, [str length]);
NSString *pattern = @"&(?!(#[0-9]{2,4}|[A-z]{2,6});)";
NSError *error = nil;

NSRegularExpression* regex = [NSRegularExpression regularExpressionWithPattern:pattern options:0 error:&error];
str = [regex stringByReplacingMatchesInString:str options:0 range:searchedRange withTemplate:@"&"];

NSData *data = [str dataUsingEncoding:NSUTF8StringEncoding];

Answer 3

Here's what worked for me:

NSString *response = [[NSString alloc]initWithData:dataResponse encoding:NSUTF8StringEncoding];
NSString *newResponse = [response stringByReplacingOccurrencesOfString:@"&amp:" withString:@"AND"];
NSData *dataObj = [newResponse dataUsingEncoding:NSUTF8StringEncoding];

If I replaced it with symbol '&', the response would be correct, but it would throw parsing error: 68. So I had to use 'and'.