Question

fairly new to Objective-C and iOS development (coming from PHP) and I have a relatively simple question that I can’t seem to find an answer to:

I am following along with an example for split View design where a web page is loaded into the Detail View when a user clicks an item in the master view. I got all this working, but would like to substitute web view for an image. So I’ve amended the app to load a UIImage instead of a WebView. What I’m looking for is the equivalent to this code:

NSString *urlString = [pagesAddress objectAtIndex:indexPath.row];
NSURL *url = [NSURL URLWithString:urlString];

// these 2 is where I get lost with the images.
NSURLRequest = *request = [NSURLRequest requestWithURL:url];
[detailViewController.webView loadRequest:request];

I came up with this:

NSString *imageName = [pagesAddress objectAtIndex:indexPath.row];
UIImage *myImage = [UIImage imageNamed:imageName];

// missing the last 2 calls: one to tell Xcode that it's an image "request" I want and the second to load the actual image (based on it's name that is already in an array) into the ImageView.

Thanks.

PS

I tried this:

NSString *imageName = [pagesAddress objectAtIndex:indexPath .row];
[detailViewController.imageView setImage:[UIImage imageNamed:imageName]]; 

And it shows just the first image, then crashes when I try to show the last one.

Answer 1

In the end, the solution were those 2 lines when I amended the code:

NSString *imageName = [pagesAddress objectAtIndex:indexPath.row];
[detailViewController.imageView setImage:[UIImage imageNamed:imageName]];

Notice that I had to change the setImage to convert the NSString to a UIImage or Xcode would complain. It turns out it was crashing because in the array where I had the image names, I had put 3 images into one entry (basically I forgot the commas!) so it was out of range.

Tim:

This line you gave me

UIImageView *imageView = [[UIImageView alloc] initWithFrame:self.view.bounds];

is unnecessary because I already have a view created, it would create another view which I never used. Also, replacing it with CGRect seems overkill if I already have a UIImage placeholder no?

In any case, it works now and I’m very grateful for all the help. iPad development with Objectve-C is a very thorny road and I expect I’ll be bugging you guys some more.

Cheers.