Showing images on device screens, making them semitransparent, moving them, rotating and scaling them – these are standard features of UIKit. They can be done by showing UIImage inside UIImageView. But it’s not everything you can get on iOS. Apple provides great frameworks to draw and process images. Apart from standard frameworks, there are open source image processing libraries.
What can we do with images? First, we’ll learn to load images from files and save them. Files can be stored in the device filesystem, ...
