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POIOS values passed to a view are lost or forgotten
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  1. POIOS values passed to a view are lost or forgotten
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    copied!<p>This is my first app, and actually isn't even fully mine but rather involves re-working an existing app to add functionality.</p> <p>It involves a JSON feed which I'm successfully reading in and then trying to pass the value of a URL to a view. Here's the code from my app delegate that is successfully fired once the feed is read in:</p> <pre><code>- (void)JSONFetch:(MYJSONFetch *)fetch gotTheCollection:(id)collection { [UIApplication sharedApplication].networkActivityIndicatorVisible = NO; self.testViewController.feedURL = [NSURL URLWithString:[collection objectForKey:@"Listings"]]; [JSONFetch release]; JSONFetch = nil; } </code></pre> <p>Then in my testViewController I have this viewDidLoad method:</p> <pre><code>- (void)viewDidLoad { [super viewDidLoad]; if(self.feedURL) { [self startDownload]; } } </code></pre> <p>Eventhough, when I debug, the gotTheCollection method passes a value to the feedURL of the view, it then fails on the if(self feedURL) check within the view and thus the view never gets populated. </p> <p>As I'm so new to this code I've no idea if the sequence is wrong, or maybe it's how I'm passing the variable.</p> <p>I know the description is relatively vague but even on a basic level I don't know if this functionality works in objective C, it doesn't cause any errors though, just sits there not loading because it can't get the data.</p> <p>UPDATE: Definition of FeedURL follows, in the H file:</p> <pre><code>NSURL *feedURL; </code></pre> <p>then</p> <pre><code>@property (nonatomic, retain) NSURL *feedURL; </code></pre> <p>then in the M file:</p> <pre><code>@synthesize feedURL; </code></pre> <hr> <p>Thanks for the help guys, I finally decided to just restart the entire upgrade as the project had become a mess of reworked code and I couldn't be sure what worked and what didn't. As a result there's no clear answer to this but I imagine Franks was probably the closest so I'll mark that as the answer.</p>
 

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