parse json for uitableview cell - iphone

Question

I have an application using UITableview application. If I click the UITableViewcell that bring JSON data. I created a UIViewController to display the information on the line that was selected in theUITableView. My requirement is if I click the UITableview cell the corresponding PDF File will be displayed in the simulator. I developed the code also. But the pdf file not be displayed on the simulator. I am new to the programming. My doubt is how to download PDF Files using json parser.Plz give me any idea or send me any sample code.Thanks in advance
This is My PDF URLS:
UIViewController Class Reference
QLPreviewController Class Reference
This is my sample code.
JSONPARSERPDFVIEWCONTROLLER .M
-(void)loadData
{
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:#""]];
connect= [[NSURLConnection alloc] initWithRequest:request delegate:self];
}
// delegate methods in json
-(void)connection:(NSURLConnection *)connectiondidReceiveResponse:(NSURLResponse *)response
{
[_data setLength:0];
NSLog(#"didReceiveResponse called");
}
//connection did receive data
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSMutableData *)data
{
[_data appendData:data];
}
/ /connection did finish loading
-(void)connectionDidFinishLoading:(NSURLConnection *)connection
{
NSError *jsonError = nil;
id jsonObject = [NSJSONSerialization JSONObjectWithData:_data options:kNilOptions error:&jsonError];
if ([jsonObject isKindOfClass:[NSArray class]])
{
//NSArray *jsonArray = (NSArray *)jsonObject;
}
else if ([jsonObject isKindOfClass:[NSDictionary class]])
{
NSDictionary *jsonDictionary = (NSDictionary *)jsonObject;
NSArray *array=[[NSArray alloc]init];
array=[jsonDictionary objectForKey:#""];
dataDictionary=[array objectAtIndex:0];
NSLog(#"%#",dataDictionary);
}
[urlsArray addObject:[dataDictionary objectForKey:#"UIViewController"]];
NSLog(#"%#",urlsArray);
//[self dataLoadingFinished:responseString withData:downloadData];
}
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
//[connection release];
// = nil;
NSLog(#"didFailWithError called");
}
uitableview.m
- (void)viewDidLoad
{
[super viewDidLoad];
fileNameList = [[NSArray alloc]initWithObjects:#"UIViewController",#"QLPreview class",#"UIDocumentInteractionController", nil];
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [fileNameList 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] autorelease];
}
cell.textLabel.text = [fileNameList objectAtIndex:indexPath.row];
return cell;
}
#pragma mark - Table view delegate
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
jsonparser *jParser=[[jsonparser alloc]init];
jParser.selectedIndex=indexPath.row;
[self.navigationController pushViewController:jParser animated:YES];
}