RSS and Xcode projects (Mac)

Question

Is it possible to generate a controller or any type of file in Xcode and receive an rss feed to the application? I've looked around for examples and nothing has come to my attention that could work for my application. The only thing I can seem to find are a ton of iPhone rss tutorials, unfortunately I can't find any on Mac OS X Xcode projects.

Answer 1

Here's what I have so far. Pardon the twitter stuff, I found this through a twitter tutorial. ould this comply with any other xml type? Anybody?
#import "AppController.h"
@implementation AppController
- (IBAction) getPublicTimeline:(id)sender
[progress startAnimation:nil]; //Start progress animation spinner.
//First we create the NSURLRequest that we're going to send to the server...
NSString *urlString = @"http://twitter.com/statuses/public_timeline.xml"; //Create an NSString called urlString containing the URL we want to access.
NSURL *url = [NSURL URLWithString:urlString]; //Create an NSURL containing (NSString)urlString
NSURLRequest *urlRequest = [NSURLRequest requestWithURL:url //Create an NSURLRequest with (NSURL)url, by default this is a GET request, you can specify a POST request by adding an additional argument.
cachePolicy:NSURLRequestReturnCacheDataElseLoad //If cached data exists, return that, otherwise fetch new data.
timeoutInterval:30]; //Wait 30 seconds for response before giving up.
NSData *urlData; //NSData object for containing data returned from Twitter server.
NSURLResponse *response; //NSURLResponse object for containing response code from server.
NSError *error; //NSError for containing error from NSURLConnection (i.e. unable to connect, etc.)
//Now we're going to use NSURLConnection to send a request to the Twitter server...
urlData = [NSURLConnection sendSynchronousRequest:urlRequest //Send a SynchronousRequest -- this means that the code stops executing until the data is returned from the server. Sending an unsynchronous request would allow code execution to continue.
returningResponse:&response //Pass the returned response into (NSURLResponse)response
error:&error]; //Pass the returned error into (NSError)error
//Check to make sure data was loaded into (NSData)urlData, if not stop executing and display an error.
if (!urlData) {
NSAlert *alert = [NSAlert alertWithError:error];
[alert runModal];
return;
[timelineXML release]; //Release previous (NSXMLDocument)timelineXML object from memory (if any existed).
timelineXML = [[NSXMLDocument alloc] initWithData:urlData //Allocate memory for and initilize a new NSXMLDocument called timelineXML and parse (NSData)urlData into it.
options:0
error:&error];
//Check to make sure data was loaded into (NSXMLDocument)timelineXML, if not stop executing and display an error.
if (!timelineXML) {
NSAlert *alert = [NSAlert alertWithError:error];
[alert runModal];
return;
[statuses release]; //Release previous (NSArray)statuses object from memory (if any existed).
statuses = [[timelineXML nodesForXPath:@"statuses/status" //Load nodes from the XPath "statuses/status" in (NSXMLDocument)timelineXML into (NSArray)statuses.
error:&error] retain]; //Retain the object so it doesn't drop from memory until we tell it to.
//Check to make sure data was loaded into (NSArray)statuses, if not stop executing and display an error.
if (!statuses) {
NSAlert *alert = [NSAlert alertWithError:error];
[alert runModal];
return;
[timelineView reloadData]; //Refresh (NSTableView)timelineView.
[progress stopAnimation:nil]; //Stop the progress spinner.
- (NSString *)stringForPath:(NSString *)xp ofNode:(NSXMLNode *)n //We will use this function to get the stringValue for a specific node in (NSArray)statuses
NSError *error; //Create NSError object named error.
NSArray *nodes = [n nodesForXPath:xp error:&error]; //Get the nodes from one of the status objects in (NSArray)statuses for the XPath specified by xp and load them into (NSArray)nodes.
if (!nodes) { //If (NSArray)nodes does not exist (wasn't created)...
NSAlert *alert = [NSAlert alertWithError:error]; //Create an alert with the error.
[alert runModal]; //Display that allert.
return nil; //Return nil for this function.
if ([nodes count] == 0) { //If (NSArray)nodes is empty...
return nil; //Return nil for this function.
} else { //Otherwise...
return [[nodes objectAtIndex:0] stringValue]; //Return the stringValue for the node from the status object from (NSArray)statuses.
#pragma mark TableView data source methods
//These data source methods are required when assigning an object as a dataSource for an NSTableView
-(int) numberOfRowsInTableView:(NSTableView*)tv //Returns the number of rows that need to be in the table view.
return [statuses count]; //Return the number of objects in (NSArray)statuses.
- (id)tableView:(NSTableView *)tv objectValueForTableColumn:(NSTableColumn *)tableColumn row:(int)row //Called by NSTableView when loading data, returns the value at (NSTableColumn)tableColumn and (int)row.
NSXMLNode *node = [statuses objectAtIndex:row]; //Load the status object from (NSArray)statuses that corresponds to the row that the NSTableView is requesting into (NSXMLNode)node
NSString *xPath = [tableColumn identifier]; //Load the identifier value for the tableColumn requested by the NSTableView into (NSString)xPath.
return [self stringForPath:xPath ofNode:node]; //Return the value returned by the stringForPath: ofNode: method.
@end