android.graphics.Bitmap on iOS

Question

I'm migrating an Android application to iOS.

On Android I have an android.graphics.Bitmap object and I don't know which object can I use on iOS.

I thought I can use CGBitmapContext or UIImage. And on the book Learn Objective-C for Java Developers, I haven't found anything useful.

On Android, first I have to created with a size, that I can use this Bitmap to get a JPEG version of it or I can draw some pixels on it.

What do you recommend me?

Answer 1

Your best resource on how to do this is going to be Apple's Drawing and Printing Guide, specifically, Creating New Images Using Bitmap Graphics Contexts.

Once you go through the steps listed in the tutorial (and perform all the necessary drawing) and you get a reference to a UIImage, you'll want to use UIImageJPEGRepresentation to save the result as a JPEG.