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    <p>Per <a href="https://dev.twitter.com/docs/tweet-entities" rel="nofollow">Twitter's documentation on entities</a>, <code>entities</code> is a dictionary and <code>urls</code> is an array of dictionaries.</p> <p>When you perform <code>... valueForKeyPath:@"entities.urls.display_url"]</code> you do the same thing as <code>... valueForKey:@"entities"] valueForKey:@"urls] valueForKey:@"display_url"]</code>.</p> <p>Per <a href="https://developer.apple.com/library/mac/documentation/Cocoa/Reference/Foundation/Classes/NSDictionary_Class/Reference/Reference.html#//apple_ref/occ/instm/NSDictionary/valueForKey%3a" rel="nofollow"><code>NSDictionary</code>'s documentation</a>, its <code>valueForKey:</code> returns the same thing as <code>objectForKey:</code> if — as in this case — the key in question doesn't start with an @.</p> <p>So the <code>entities</code> part of <code>valueForKeyPath:</code> returns an array of objects.</p> <p>Per <a href="https://developer.apple.com/library/mac/documentation/Cocoa/Reference/Foundation/Classes/NSArray_Class/NSArray.html#//apple_ref/occ/instm/NSArray/valueForKey%3a" rel="nofollow"><code>NSArray</code>'s documentation</a>, its <code>valueForKey:</code> returns an array comprised of the result of calling <code>valueForKey:</code> on each object in the array individually.</p> <p>Given that each thing in the <code>entities</code> array is a dictionary, what you therefore get back is an array of the <code>display_url</code> key for every entity in the tweet.</p> <p>So I think your problem is that you expect to get "<em>the</em> actual URL from the tweet" (emphasis added). Tweets may contain arbitrary many links outward, not merely one — entities represent ranges of characters with special meanings like links, hashtags and similar. So you end up with an array rather than a single value.</p>
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    1. COTommy, Thanks so much. Getting it as an array and then turning that into a string worked. Thanks for your time!
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