Question

I wanted to do validation of xml in objective c. Is there any provision or way in objective c to check whether the given xml is valid or not ?

Answer 1

Use NSXMLDocument for this:

 NSError *err;
 NSXMLDocument *xmlDoc = [[NSXMLDocument alloc] initWithContentsOfURL:furl            options:(NSXMLDocumentValidate | NSXMLNodePreserveAll)
                                                error:&err];

 BOOL vaildXML = [xmlDoc validateAndReturnError:&err];
 NSLog(@"Error : %@",[err description]);

For ios use NSXMLParser

It will not crash, if NSXMLParser finds an error, it will let you know through its delegate, either by invoking parser:validationErrorOccurred: or – parser:parseErrorOccurred:. You can use the – (NSError *)parserError in NSXMLParser to determine the error wich caused the parsing to terminate.