How to merge multiple UIImageViews into one UIImage

Question

hi all,

I have 2 UIImageViews laying on top of each other ( picture + overlay frame ) and I want to save them to the camera roll as 1 picture.

How should I combine those 2 UIImageViews so that I can call the UIImageWriteToSavedPhotosAlbum function, using a 'result' UIImage?

Answer 1

I don't have my Mac nearby at the moment, but I have done this before. The process is that you'll render the UIImageViews into a bitmap context, then create a CGImage from that context that you can use to create a new UIImage from. Read up on CGBitmapContext, including CGBitmapContextCreateImage