StackOverflow2013

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copied!<p>A couple of observations:</p> <ol> <li><p>Your JSON is not well formed, missing a comma. It should be:</p> <pre><code>{ "noticias": [ { "titulo":"teste" }, { "titulo":"teste 2" } ] } </code></pre> <p>If you don't add that missing comma, you'll get an error from your parser. For example, <code>NSJSONSerialization</code> will report:</p> <blockquote> <p>Badly formed array around character 109</p> </blockquote></li> <li><p>To read the contents, you would load a <code>NSData</code> with the contents of the JSON and then parse it, for example:</p> <pre><code>NSData *data = [NSData dataWithContentsOfFile:filename]; // or [NSData dataWithContentsOfURL:url]; NSError *error = nil; NSDictionary *dictionary = [NSJSONSerialization JSONObjectWithData:data options:0 error:&error]; if (error) NSLog(@"%@", error); else { NSArray *array = [dictionary objectForKey:@"noticias"]; NSDictionary *item = [array objectAtIndex:indexPath.row]; NSString *title = [item objectForKey:@"titulo"]; NSLog(@"%@", firstTitle); } </code></pre> <p>or, using the new, simpler syntax:</p> <pre><code>NSData *data = [NSData dataWithContentsOfFile:filename]; // or [NSData dataWithContentsOfURL:url]; NSError *error = nil; NSDictionary *dictionary = [NSJSONSerialization JSONObjectWithData:data options:0 error:&error]; if (error) NSLog(@"%@", error); else { NSArray *array = dictionary[@"noticias"]; NSDictionary *item = array[indexPath.row]; NSString *title = item[@"titulo"]; NSLog(@"%@", title); } </code></pre></li> </ol> <hr> <p>First, define a property for your <code>noticias</code> in the <code>@interface</code> for your class:</p> <pre><code>@property (nonatomic, strong) NSArray *noticias; </code></pre> <p>Then read your <code>noticias</code>:</p> <pre><code>- (void)fetchNoticias { dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{ NSData* data = [NSData dataWithContentsOfURL: [NSURL URLWithString: @"http://www.site.com/json"]]; NSError* error = nil; NSDictionary *results = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&error]; if (error) { NSLog(@"%s: error=%@", __FUNCTION__, error); return; } self.noticias = [results objectForKey:@"noticias"]; dispatch_async(dispatch_get_main_queue(), ^{ [self.tableView reloadData]; }); }); } </code></pre> <p>Then</p> <pre><code>- (void)viewDidLoad { [super viewDidLoad]; [self fetchNoticias]; } </code></pre> <p>and, finally, <code>cellForRowAtIndexPath</code>:</p> <pre><code>- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"NoticiasCell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath]; if (cell == nil) { cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier]; } NSDictionary *noticia = [self.noticias objectAtIndex:indexPath.row]; NSString *firstTitle = [noticia objectForKey:@"titulo"]; cell.textLabel.text = firstTitle; //cell.detailTextLabel.text = subtitulo; [cell setAccessoryType:UITableViewCellAccessoryDisclosureIndicator]; return cell; } </code></pre>

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