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POProblem with UIImageView loading via OperationQueue
 

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  1. POProblem with UIImageView loading via OperationQueue
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    <p>I load a UIImageView using an NSOperationQueue.</p> <p>The load fetches an image from the Internet and then adds it to an image view. The problem I have is that the method finishes but it takes about 3 seconds later for the image view to actually either show the image or remove the image view from the superview...</p> <pre><code>- (void)viewDidLoad { NSLog(@"AirportDetailView: viewDidLoad"); [super viewDidLoad]; [self.activity startAnimating]; self.queue = [NSOperationQueue new]; NSInvocationOperation *operation = [[NSInvocationOperation alloc] initWithTarget:self selector:@selector(loadImage) object:NULL]; [self.queue addOperation:operation]; [operation release]; } -(void)loadImage { [myAp ImageForAp]; NSLog(@"ImageFor Ap Ended, %@",myAp.ApDiagram); [self.activity stopAnimating]; if (myAp.ApDiagram==NULL) { NSLog(@"Finally Gets Here"); [self.Diagram removeFromSuperview]; } else { NSLog(@"Finally Gets Here with Diag"); [self.Diagram setBackgroundImage:myAp.ApDiagram forState:UIControlStateNormal]; } } </code></pre> <p>The NSLOG shows a delay between the first two log statements of about 3 seconds can't understand why....</p> <p>Updated with my Latest Code......</p> <pre><code>-(void)loadImage { [myAp ImageForAp]; NSLog(@"ImageFor Ap Ended, %@",myAp.ApDiagram); [self performSelectorOnMainThread:@selector(UpdateUI) withObject:nil waitUntilDone:NO]; } -(void)UpdateUI { [self.activity stopAnimating]; if (myAp.ApDiagram==NULL) { NSLog(@"Finally Gets Here"); [self.Diagram removeFromSuperview]; } else { NSLog(@"Finally Gets Here with Diag"); [self.Diagram setBackgroundImage:myAp.ApDiagram forState:UIControlStateNormal]; } } </code></pre>
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