iphone - How to set Parser Delegate to Self in ARC environment? -

hey have used parsers in past never in arc environment. when try , set parser self gives me error message , doesn't parse data. know problem , how solve it?

here warning when try set parser delegate self:

semantic issue: sending 'charitycontroller *const __strong' parameter of incompatible    type 'id<nsxmlparserdelegate>' 

here code:

- (void)connection:(nsurlconnection *)connection didreceivedata:(nsdata *)data {     if (connection == theconnection)     {         // data object.         //nslog(@"data server is: %@",data);         nsstring *test = [[nsstring alloc]initwithdata:data encoding:nsstringencodingconversionallowlossy];         nslog(@"data server is: %@",test);         parser = [[nsxmlparser alloc] initwithdata: data];          [parser setdelegate:self];         [parser parse];     } }  - (void)parser:(nsxmlparser *)parser didstartelement:(nsstring *)elementname namespaceuri:(nsstring *)namespaceuri qualifiedname:(nsstring *)qname attributes:(nsdictionary *)attributedict {     if ([elementname isequaltostring:@"root"]) {         currentstringvalue = nil;         nslog(@"i inside parser @ root!.");          return;     } 

did use protocol name in interface definition let compiler know conform particular protocol? such as:

@interface charityclass : nsobject <nsxmlparserdelegate>