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xcode - Not including non-retina display images in an iPhone project

I have an iPhone Xcode project that currently only contains images for retina display (twice the size as normal and with a @2x.png suffix). When I run the app on the iPhone Simulator (non retina) the images are still being displayed. Does this mean I don't need to worry about including two sets of images: retina and non-retina?

This all seems a bit odd. I would assume that no images would appear on a non retina device if there are no non-@2x files included.

Note: I have not tested my app on a non retina device. Just the simulator.

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I'm pretty sure that iOS will just use the @2x and scale it down if you don't have a non-retina graphic. Although that's sub-optimal since you're letting iOS do the scaling at runtime which will be slower than including the non-retina graphic and also iOS might not do as good a job as scaling as your graphics editor of choice.


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