Objective-C Pull to Refresh - objective-c

Question

I'm trying to implement a pull-to-refresh feature on my RSS feed table. The list pulls normally when loading the app, but I essentially need to replicate that for the pull-down.
Could anyone help as to why the code isn't working?
#import "RSSTableViewController.h"
#import "RSSDetailViewController.h"
#interface RSSTableViewController () {
NSXMLParser *parser;
NSMutableArray *feeds;
NSMutableDictionary *item;
NSMutableString *title;
NSMutableString *link;
NSString *element;
}
#end
#implementation RSSTableViewController
- (void)viewDidLoad {
[super viewDidLoad];
// RSS Settings
feeds = [[NSMutableArray alloc] init];
NSURL *url = [NSURL URLWithString:#"http://external.example.co.uk/newpost/example.rss"];
parser = [[NSXMLParser alloc] initWithContentsOfURL:url];
[parser setDelegate:self];
[parser setShouldResolveExternalEntities:NO];
[parser parse];
UIRefreshControl *refresh = [[UIRefreshControl alloc] init];
refresh.attributedTitle = [[NSAttributedString alloc] initWithString:#"Pull to Refresh"];
[refresh addTarget:self
action:#selector(refreshView:)
forControlEvents:UIControlEventValueChanged];
self.refreshControl = refresh;
}
- (void)refreshView:(UIRefreshControl *)refresh {
refresh.attributedTitle = [[NSAttributedString alloc] initWithString:#"Refreshing news feed..."];
// Refresh Logic
NSURL *url = [NSURL URLWithString:#"http://external.example.co.uk/newpost/example.rss"];
parser = [[NSXMLParser alloc] initWithContentsOfURL:url];
[parser setDelegate:self];
[parser setShouldResolveExternalEntities:NO];
[parser parse];
// Set the timestamp
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:#"MMM d, h:mm a"];
NSString *lastUpdated = [NSString stringWithFormat:#"Last updated: %#",
[formatter stringFromDate:[NSDate date]]];
refresh.attributedTitle = [[NSAttributedString alloc] initWithString:lastUpdated];
[refresh endRefreshing];
[self.tableView reloadData];
}
- (void)parserDidEndDocument:(NSXMLParser *)parser {
[refreshView endRefreshing]; //'Use of undeclared identifier 'refresh view'//
[self.tableView reloadData];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
// Return the number of rows in the section.
return feeds.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"Cell" forIndexPath:indexPath];
cell.textLabel.text = [[feeds objectAtIndex:indexPath.row] objectForKey:#"title"];
return cell;
}
- (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];
}
}
- (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"];
[feeds addObject:[item copy]];
}
}
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string {
if ([element isEqualToString:#"title"]) {
[title appendString:string];
}
else if ([element isEqualToString:#"link"]) {
[link appendString:string];
}
}
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([[segue identifier] isEqualToString:#"showDetail"]) {
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
NSString *string = [feeds[indexPath.row] objectForKey:#"link"];
[[segue destinationViewController] setUrl:string];
}
}
#end
Anyone got any ideas?

Answer 1

Code works fine
Needed to remove the line in parserDidEndDocument with the error.
I then had to add [feeds removeAllObjects] under the //Refresh Logic line to clear the current table contents.
Thanks guys.