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POImage doesn't save from URL when using UIImage
 

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  1. POImage doesn't save from URL when using UIImage
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    <p>"img" is actually a string with an URL in it, but I actually use it also as the name of the file</p> <pre><code>NSString *applicationDocumentsDir = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject]; NSString *storePath = [applicationDocumentsDir stringByAppendingPathComponent:img]; NSURL *url = [NSURL URLWithString:img]; NSData *imageData = [NSData dataWithContentsOfURL:url]; [imageData writeToFile:storePath atomically:TRUE]; </code></pre> <p>In my view controller I got this:</p> <pre><code>UIImage *img = [[UIImage alloc] initWithContentsOfFile:self.initialImg]; if(img == nil) NSLog(@"image is nil"); [self.image setImage:img]; </code></pre> <p>"initialImg" is an NSString with the same url as in "img". I also changed "img" and "initialImg" with another string like test.png, but this doesn't work either.</p> <p>It prints out "image is nil" and not sure why it is nil...</p> <p><strong>EDIT:</strong></p> <p>Now I got:</p> <pre><code> NSURL *url = [NSURL URLWithString:img]; NSData *imageData = [NSData dataWithContentsOfURL:url]; UIImage *uiImage=[UIImage imageWithData:imageData]; NSData *pngData = UIImagePNGRepresentation(uiImage); NSString *documentsPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject]; NSString *filePath = [documentsPath stringByAppendingPathComponent:@"image.png"]; [pngData writeToFile:filePath atomically:YES]; </code></pre> <p>And in another view controller in the viewDidLoad function:</p> <pre><code> UIImage *img = [[UIImage alloc] initWithContentsOfFile:@"image.png"]; if(img == nil) NSLog(@"image is nil"); [self.image setImage:img]; </code></pre> <p>It still shows me "image is nil" and I changed the urls but they are correct</p>
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    1. COIn general you can not use URL as a filename (see http://stackoverflow.com/a/6114531/792677), post an example filename you wanted to use so that we can see if that is the case.
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    2. COAs I said, I've tried and changed it with "test.png" but it still says that image is nil
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    3. COIf you did what you said ("changed "img" and "initialImg" with another string like test.png") the image was not downloaded as test.png is not likely a valid URL for image loading. Please clarify what you've done.
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