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POHow to programmatically set the background on a UICustomButton?
 

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  1. POHow to programmatically set the background on a UICustomButton?
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    <p>I know this question has been asked and answered in other forums, but I can't seem to duplicate what they did and get it to work. I am trying to set the background to a button using a picture that I download from a server. Everything works until I try to make a NSData object with the contents of a URL. When I try and print the Data to the screen it comes back Null. What am I doing wrong? </p> <pre><code>myImageURLString = [[NSMutableString alloc] initWithString:@"http://destinationnexus.com"]; keyName = [businessButtonTagArray objectAtIndex:i]; arrayFromBusinessDictionary = [businessDictionary objectForKey:keyName]; stringToAddToMyImageURLString = [arrayFromBusinessDictionary objectAtIndex:1]; UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom]; [button addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside]; [button setTag:i]; button.frame = CGRectMake(xOffSet+(countForX*xMult), yOffset +(countForY*yMult), 215, 155); [myImageURLString appendString:stringToAddToMyImageURLString]; NSLog(@"Appended URL String: = %@", myImageURLString); NSURL *myImageURL = [NSURL URLWithString:@"http://destinationnexus.com/pictures/directory/ColdWater-Inn-in-Tuscumbia-Alabama-35674-8729//.jpg"]; NSLog(@"NSURL = %@", myImageURL); //THIS IS WHERE I SEEM TO HAVE A PROBLEM..... NSData *imageData = [[NSData alloc] initWithContentsOfURL:myImageURL]; UIImage *image = [[UIImage alloc] initWithData:imageData] ; NSLog(@"Image Data = %@", imageData); //UIImage *myImage = [UIImage imageWithData:imageData] ; [button setBackgroundImage:image forState:UIControlStateNormal]; </code></pre> <p>When I run the program this is what it outputs in the Log:</p> <p>Appended URL String: = <a href="http://destinationnexus.com/pictures/directory/Auburn-University-Hotel-and-Center-in-Auburn-Alabama-36830-5429.jpg" rel="nofollow">http://destinationnexus.com/pictures/directory/Auburn-University-Hotel-and-Center-in-Auburn-Alabama-36830-5429.jpg</a></p> <p>NSURL = <a href="http://destinationnexus.com/pictures/directory/ColdWater-Inn-in-Tuscumbia-Alabama-35674-8729.jpg" rel="nofollow">http://destinationnexus.com/pictures/directory/ColdWater-Inn-in-Tuscumbia-Alabama-35674-8729.jpg</a></p> <p>Image Data = (null)</p>
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    1. CONSLog(@"NSURL = %@", myImageURL); what's the output?
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    2. CO@URLArenzo it changes because it is dynamically setting backgrounds to a number of different buttons, but an example would be:NSURL = http://destinationnexus.com/pictures/directory/Columbus-Street-Inn-in-Fayette-Alabama-35555.jpg
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    3. COOh, have you ever tried to download the image from the NSURL above? Check the URL.
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