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POload data from cache with NSURL doesn't work
 

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  1. POload data from cache with NSURL doesn't work
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    <p>i'm trying to load a photo from my cache directory.</p> <p>this is the code where i write the photo into a cache folder:</p> <pre><code>+(BOOL)writeAData:(NSData *)imageData atURL:(NSURL *)fileUrl { return [imageData writeToURL:fileUrl atomically:YES]; } </code></pre> <p>this code works fine, but i have problems when i try to load the code from the cache folders:</p> <p>i use the method initWithContentsOfURL inside a block:</p> <pre><code> NSData *imageData = [[NSData alloc] initWithContentsOfURL:self.imageUrl]; </code></pre> <p>this is the format of url</p> <pre><code>file://localhost/Users/MarcoMignano/Library/Application%20Support/iPhone%20Simulator/6.1/Applications/0E8E54D8-9634-41CF-934B-A7315411F12F/Library/Caches/image_cache/Meyer%20Library.jpg </code></pre> <p>the URL is correct, but when i try to use the method above i get this error:</p> <pre><code> ..... [__NSCFString isFileURL]: unrecognized selector sent to instance 0x8a0c5b0 ..... </code></pre> <p>that is the code when i take the url of my model:</p> <pre><code>-(void)viewWillAppear:(BOOL)animated { [super viewWillAppear:YES]; self.photos = [PhotoAlreadyDisplayed getAllPicture]; } -(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender { if ([sender isKindOfClass:[UITableViewCell class]]) { NSIndexPath *indexPath = [self.tableView indexPathForCell:sender]; if (indexPath) { if ([segue.identifier isEqualToString:@"Show Image"]) { if ([segue.destinationViewController respondsToSelector:@selector(setImageUrl:)]) { NSURL *url = [[self.photos objectAtIndex:indexPath.row] valueForKey:@"url"]; [segue.destinationViewController performSelector:@selector(setImageUrl:) withObject:url]; [segue.destinationViewController setTitle:[self titleForRow:indexPath.row]]; } } } } } </code></pre> <p>whats wrong with the URL? how can i fix it? thank you</p> <p><strong>i have find the solution:</strong> when i load the url for the model, i need to initialize the url using fileURLWithPath method:</p> <pre><code>NSURL *url = [NSURL fileURLWithPath:[[self.photos objectAtIndex:indexPath.row] valueForKey:@"url"]]; </code></pre> <p>Now all works fine, thank you so much for yours help</p>
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