IOS How to display NSXMLparser with NSMutable array into tableview? - ios

Question

I have a NSXML parser that is willing to retrieve data out and put it into NSMutable array. It works when i NSLog the array out. But when i display the array into the table view it fails. Is good if can tell me more specific on which error that i have because there is no error when running.
This is my ViewDidLoad
- (void)viewDidLoad {
[super viewDidLoad];
// output = [[NSMutableArray alloc]initWithObjects:#"red",#"green", nil];
NSLog(#"Response recieved");
output= [[NSMutableArray alloc] init];
feeds = [[NSMutableArray alloc] init];
// NSString *severity = #"Informational";
NSString *soapMessage = #"<?xml version=\"1.0\" encoding=\"utf-8\"?>"
"<soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\">"
"<soap:Body>"
" <IncidentGetList xmlns=\"https://www.monitoredsecurity.com/\">"
"<Severity></Severity>"
"<SourceOrganization></SourceOrganization>"
"<DestinationOrganization></DestinationOrganization>"
"<MaxIncidents></MaxIncidents>"
"<SourceIP></SourceIP>"
"<Category></Category>"
"<ExcludeCategory></ExcludeCategory>"
"<StartTimeStampGMT></StartTimeStampGMT>"
"<EndTimeStampGMT></EndTimeStampGMT>"
"<CustomerSeverity></CustomerSeverity>"
"</IncidentGetList>"
"</soap:Body>"
"</soap:Envelope>";
NSURL *url = [NSURL URLWithString:#"https://api.monitoredsecurity.com/SWS/incidents.asmx"];
NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:url];
NSString *msgLength = [NSString stringWithFormat:#"%d", [soapMessage length]];
[theRequest addValue: #"text/xml; charset=utf-8" forHTTPHeaderField:#"Content-Type"];
[theRequest addValue: #"https://www.monitoredsecurity.com/IncidentGetList" forHTTPHeaderField:#"SOAPAction"];
[theRequest addValue: msgLength forHTTPHeaderField:#"Content-Length"];
[theRequest setHTTPMethod:#"POST"];
[theRequest setHTTPBody: [soapMessage dataUsingEncoding:NSUTF8StringEncoding]];
NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self];
[connection start];
if(connection)
{
webResponseData = [NSMutableData data] ;
}
else
{
NSLog(#"Connection is NULL");
}
}
This is my NSXMLparser
//Implement the NSXmlParserDelegate methods
-(void) parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName
namespaceURI:(NSString *)namespaceURI qualifiedName:
(NSString *)qName attributes:(NSDictionary *)attributeDict
{
element = elementName;
if ([element isEqualToString:#"SecurityIncidentSummary"]) {
IncidentGetList = [[NSMutableDictionary alloc] init];
Severity = [[NSMutableString alloc] init];
} //NSLog(#"current element: ", elementName);
}
- (void)parserDidStartDocument:(NSXMLParser *)parser{
NSLog(#"File found and parsing started");
}
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string
{
if ([element isEqualToString:#"Severity"]) {
[Severity appendString:string];
}
}
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName
namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
{
if ([elementName isEqualToString:#"SecurityIncidentSummary"]) {
[IncidentGetList setObject:Severity forKey:#"Severity"];
[feeds addObject:[IncidentGetList copy]];
}
[self.datalist reloadData];
}
- (void)parserDidEndDocument:(NSXMLParser *)parser {
NSLog(#"Final Feed : %#",feeds);
//[self.datalist reloadData];
}
This is my tableview
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// Row display. Implementers should *always* try to reuse cells by setting each cell's reuseIdentifier and querying for available reusable cells with dequeueReusableCellWithIdentifier:
// Cell gets various attributes set automatically based on table (separators) and data source (accessory views, editing controls)
return [feeds count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *cellId = #"UITableViewCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellId];
if(cell == nil){
cell= [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellId];
}
cell.textLabel.text= [[feeds objectAtIndex:indexPath.row]objectForKey:#"Severity"];
//cell.textLabel.text= output[indexPath.row];
return cell;
}

Answer 1

Check out this XMLParser example which I have done.
In your .h file:
#interface RssViewController : UIViewController<NSXMLParserDelegate,UITableViewDataSource,UITableViewDelegate>
{
NSString *element;
NSXMLParser *xml;
NSMutableDictionary *item;
NSMutableString *title;
NSMutableString *link;
NSMutableString *description;
NSMutableArray *arrmute;
}
#property (weak, nonatomic) IBOutlet UITableView *tview;
In .m file:
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
arrmute=[[NSMutableArray alloc]init];
NSURL *url=[[NSURL alloc]initWithString:#"http://news.google.co.in/news?cf=all&hl=en&pz=1&ned=in&topic=tc&output=rss"];
xml=[[NSXMLParser alloc]initWithContentsOfURL:url];
xml.delegate=self;
xml.shouldResolveExternalEntities=YES;
[xml parse];
}
NSXMLParser delegates methods :-
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict
{
element = elementName;
if ([element isEqualToString:#"item"])
{
item=[[NSMutableDictionary alloc] init];
title=[[NSMutableString alloc] init];
link=[[NSMutableString alloc] init];
description=[[NSMutableString alloc] init];
}
}
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string
{
if ([element isEqualToString:#"title"])
{
[title appendString:string];
}
else if ([element isEqualToString:#"link"])
{
[link appendString:string];
}
else if ([element isEqualToString:#"description"])
{
[description appendString:string];
}
}
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
{
if ([elementName isEqualToString:#"item"]) {
[item setObject:title forKey:#"title"];
[item setObject:link forKey:#"link"];
[item setObject:description forKey:#"description"];
[arrmute addObject:[item copy]];
}
}
- (void)parserDidEndDocument:(NSXMLParser *)parser
{
[self.tview reloadData];
}
TableView Methods:-
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return arrmute.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *cellIdentifier = #"cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier];
}
cell.textLabel.text=[[arrmute objectAtIndex:indexPath.row] objectForKey:#"title"];
cell.textLabel.numberOfLines = 0;
cell.textLabel.lineBreakMode = NSLineBreakByWordWrapping;
return cell;
}
Hope this will help you...