Does AIR on iPhone have a 1024x1024 (2048x2048) limit on the images it can load?

The iPhone does. Does AIR/Flash开发者_Go百科?

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The iPhone doesn't have a limit on image size any more. It used to, but that was way back in iOS 2. Since 3.0 there has been no finite limit on the size of images or UIViews generally.

The only limit is one of memory. So loading a 2048x2048 PNG is a bad idea, because it's going to consume around 16MB of memory once uncompressed. One some iOS hardware you may only have 80MB or less to play with, so that's a substantial chunk.

This memory constraint is independent of software, so using Adobe AIR isn't going to let you have larger images than using raw Objective-C.

If you need to display large images on memory constrained devices such as the iPhone you need to think about smart ways of doing so, such as through tiling.