//
// RootViewController.m
// TAB RSS reader
//
// Created by Jason Terhorst on 7/28/08.
// Copyright AstoundingCookie, LLC 2008. All rights reserved.
//
#import "RootViewController.h"
#import "TAB_RSS_readerAppDelegate.h"
@implementation RootViewController
- (void)viewDidLoad {
// Add the following line if you want the list to be editable
// self.navigationItem.leftBarButtonItem = self.editButtonItem;
}
- (NSInteger)numberOfSectionsInTableView: (UITableView *)tableView {
return 1;
}
- (NSInteger)tableView: (UITableView *)tableView numberOfRowsInSection: (NSInteger)section {
return [stories count];
}
- (UITableViewCell *)tableView: (UITableView *)tableView cellForRowAtIndexPath: (NSIndexPath *)indexPath {
static NSString *MyIdentifier = @"MyIdentifier";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:MyIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:MyIdentifier] autorelease];
}
// Set up the cell
int storyIndex = [indexPath indexAtPosition: [indexPath length] - 1];
[cell setText:[[stories objectAtIndex: storyIndex] objectForKey: @"title"]];
return cell;
}
- (void)tableView: (UITableView *)tableView didSelectRowAtIndexPath: (NSIndexPath *)indexPath {
// Navigation logic
int storyIndex = [indexPath indexAtPosition: [indexPath length] - 1];
NSString * storyLink = [[stories objectAtIndex: storyIndex] objectForKey: @"link"];
// clean up the link - get rid of spaces, returns, and tabs...
storyLink = [storyLink stringByReplacingOccurrencesOfString
" " withString
""];
storyLink = [storyLink stringByReplacingOccurrencesOfString
"\n" withString
""];
storyLink = [storyLink stringByReplacingOccurrencesOfString
" " withString
""];
NSLog(@"link: %@", storyLink);
// open in Safari
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:storyLink]];
}
- (void)viewWillAppear: (BOOL)animated {
[super viewWillAppear:animated];
}
- (void)viewDidAppear: (BOOL)animated {
[super viewDidAppear:animated];
if ([stories count] == 0) {
NSString * path = @"http://cakesinthecity.blogspot.com/feeds/posts/default?alt=rss";
[self parseXMLFileAtURL: path];
}
cellSize = CGSizeMake([newsTable bounds].size.width, 60);
}
- (void)viewWillDisappear: (BOOL)animated {
}
- (void)viewDidDisappear: (BOOL)animated {
}
- (void)parserDidStartDocument: (NSXMLParser *)parser{
NSLog(@"found file and started parsing");
}
- (void)parseXMLFileAtURL: (NSString *)URL
{
stories = [[NSMutableArray alloc] init];
//you must then convert the path to a proper NSURL or it won't work
NSURL *xmlURL = [NSURL URLWithString: URL];
// here, for some reason you have to use NSClassFromString when trying to alloc NSXMLParser, otherwise you will get an object not found error
// this may be necessary only for the toolchain
rssParser = [[NSXMLParser alloc] initWithContentsOfURL: xmlURL];
// Set self as the delegate of the parser so that it will receive the parser delegate methods callbacks.
[rssParser setDelegate: self];
// Depending on the XML document you're parsing, you may want to enable these features of NSXMLParser.
[rssParser setShouldProcessNamespaces: NO];
[rssParser setShouldReportNamespacePrefixes: NO];
[rssParser setShouldResolveExternalEntities: NO];
[rssParser parse];
}
- (void)parser: (NSXMLParser *)parser parseErrorOccurred: (NSError *)parseError {
NSString * errorString = [NSString stringWithFormat: @"Unable to download story feed from web site (Error code %i )", [parseError code]];
NSLog(@"error parsing XML : %@", errorString);
UIAlertView * errorAlert = [[UIAlertView alloc] initWithTitle
"Error loading content" message:errorString delegate:self cancelButtonTitle
"OK" otherButtonTitles:nil];
[errorAlert show];
}
- (void)parser: (NSXMLParser *)parser didStartElement: (NSString *)elementName namespaceURI: (NSString *)namespaceURI qualifiedName: (NSString *)qName attributes: (NSDictionary *)attributeDict{
//NSLog(@"found this element: %@", elementName);
currentElement = [elementName copy];
if ([elementName isEqualToString: @"item"]) {
// clear out our story item caches...
item = [[NSMutableDictionary alloc] init];
currentTitle = [[NSMutableString alloc] init];
currentDate = [[NSMutableString alloc] init];
currentSummary = [[NSMutableString alloc] init];
currentLink = [[NSMutableString alloc] init];
}
}
- (void)parser: (NSXMLParser *)parser didEndElement: (NSString *)elementName namespaceURI: (NSString *)namespaceURI qualifiedName: (NSString *)qName{
//NSLog(@"ended element: %@", elementName);
if ([elementName isEqualToString: @"item"]) {
// save values to an item, then store that item into the array...
[item setObject: currentTitle forKey: @"title"];
[item setObject: currentLink forKey: @"link"];
[item setObject: currentSummary forKey: @"summary"];
[item setObject: currentDate forKey: @"date"];
[stories addObject: [item copy]];
NSLog(@"adding story: %@", currentTitle);
}
}
- (void)parser: (NSXMLParser *)parser foundCharacters: (NSString *)string{
//NSLog(@"found characters : %@", string);
// save the characters for the current item...
if ([currentElement isEqualToString: @"title"]) {
[currentTitle appendString: string];
} else if ([currentElement isEqualToString: @"link"]) {
[currentLink appendString: string];
} else if ([currentElement isEqualToString: @"description"]) {
[currentSummary appendString: string];
} else if ([currentElement isEqualToString: @"pubDate"]) {
[currentDate appendString: string];
}
}
- (void)parserDidEndDocument: (NSXMLParser *)parser {
[activityIndicator stopAnimating];
[activityIndicator removeFromSuperview];
NSLog(@"all done!");
NSLog(@"stories array has %d items", [stories count]);
[newsTable reloadData];
}
- (BOOL)shouldAutorotateToInterfaceOrientation: (UIInterfaceOrientation)interfaceOrientation {
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning]; // Releases the view if it doesn't have a superview
// Release anything that's not essential, such as cached data
}
- (void)dealloc {
[currentElement release];
[rssParser release];
[stories release];
[item release];
[currentTitle release];
[currentDate release];
[currentSummary release];
[currentLink release];
[super dealloc];
}
@end
