Question

I have NSMutableArray containing UIImageViews and NSArray containing UIImages. The arrays are of equal size. I need to set images from the second array to the first one. It would be very convinient to implement it in loop, something like:

for (int i = 0;i < firstArray.count;i++)
  [firstArray objectAtIndex:i].image = [secondArray objectAtIndex:i];

but that doesn’t compile. It says “Property “image” not found on object of type “id”. Is it possible to implement it in loop somehow?

Answer 1

You need to cast from the id type to a UIImageView before accessing properties on it. Use the following…

for (int i = 0;i < firstArray.count;i++)
  ((UIImageView *)[firstArray objectAtIndex:i]).image = [secondArray objectAtIndex:i];