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    <p>If you just want to know when it's complete and don't really care about any data, simply use the <code>NSNotificationCenter</code> to post a notification and have your view subscribe to it.</p> <p><strong>Delegate</strong> - Post Notification upon completion</p> <pre><code>-(void) connectionDidFinishLoading:(NSURLConnection*)connection { [[NSNotificationCenter defaultCenter] postNotificationName:@"NSURLConnectionDidFinish" object:nil]; } </code></pre> <p><strong>View</strong> - Add observer and run some code when observed</p> <pre><code>-(void) viewDidLoad { [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(yourCleanupMethod) name:@"NSURLConnectionDidFinish" object:nil]; } -(void) yourCleanupMethod { // finish up [[NSNotificationCenter defaultCenter] removeObserver:self]; } </code></pre> <p>Now, if you need to pass a simple object back as data you can try loading up the object parameter in your notification like this:</p> <pre><code>[[NSNotificationCenter defaultCenter] postNotificationName:@"NSURLConnectionDidFinish" object:yourDataObject]; </code></pre> <p>Then change your view and cleanup signature like this:</p> <pre><code>-(void) viewDidLoad { // Notice the addition to yourCleanupMethod [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(yourCleanupMethod:) name:@"NSURLConnectionDidFinish" object:nil]; } -(void) yourCleanupMethod:(NSNotification *)notif { // finish up id yourDataObject = [notif object]; [[NSNotificationCenter defaultCenter] removeObserver:self]; } </code></pre> <p>Now I found myself needing something a little more than this so I ended up creating a singleton to handle all of my requests. Since all of your delegate methods in <code>NSURLConnectionDelegate</code> give you and instance of the <code>NSURLConnection</code> for the specific connection, you can simply store a mutable data object in a dictionary and look it up each time by the connection. From there I have a method signature that takes and object and selector in that I associate with the connection so after everything has wrapped up, I can pass that mutable data object to the requestor by performing the selector on that object. </p> <p>I won't include all of that code here but maybe that will help get you thinking about what is possible. I found that I had a lot of code tied up in making web service calls so wrapping everything up in a singleton gave me a nice clean way of getting data. Hope this helps!</p>
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    1. CONotifications are very helpful for creating "call backs" when events occur. I would suggest this method
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A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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