单击UIBarButtonItem重新加载RSSFeed

Question

I'm new to iOS development and I've not got much experience with programming. I either want to reload a UITableView from an RSS feed which I followed the following tutorial: RSS Tutorial

I just can't seem to add a reload button to it as sometimes it fails to load first time and would like to add a button to the top bar the reload the data.

Like I said I've got next to nothing in experience with Objective-C but any help would be appreciated.

The following code is part of the code that refreshes the feed:

- (void)viewDidLoad {
    [super viewDidLoad];    
    self.title = @"News";
    self.allEntries = [NSMutableArray array];
    self.queue = [[[NSOperationQueue alloc] init] autorelease];
    self.feeds = [NSArray arrayWithObjects:@"http://yourllanelli.org.uk/index.php?format=feed&type=atom",
        nil];    
    [self refresh];

    _reloadButton = [[[UIBarButtonItem alloc]
                                       initWithTitle:@"Settings" style:UIBarButtonItemStyleBordered
                                       target:self action:@selector(reloadClick)]  autorelease];
}

-(void)reloadClick {    
    [UITableView refresh];
}

Answer 1

You are not actually getting the data from the RSS feed again when the reloadClick action is called.

You want to call your refresh method, and once your ASIHTTPRequests have all finished, you want to call [UITableView reloadData]

-(void)reloadClick
{    
    [self refresh];
}

- (void) requestDidFinish:(ASIHTTPRequest *)request {
     // you need to reload your UITableView once your ASIHTTPRequests finish.
     // since you are sending many requests to get the contents of different feeds, 
     // it would be better to call the following line only once, 
     // when all of the requests have finished
     [UITableView reloadData];
}