Question

I’m using an image that fills the screen (like a background) to my app. The image is already in retina dimensions, but I scaled it to fit the simulator screen. Because it’s already in retina dimensions, do I still need to add a copy of it with the @2x extension?

Answer 1

the naming notation is required for compiler to detect your retina images.if you write image.png the compiler looks for [e-mail] and then image.png and if it can not find it(for retina displays).

So name all your images [e-mail] and provide also xxx.png for non retina devices.

On the other hand i would use exact image sizes for non-strechable images in you app.Resizing means extra time and naturally extra computation.On the other hand fractional image resolutions ends up with blurry images.

For iphone 5 images you should for instance include [e-mail] but call Iphone5BackgorundIamge.png in your code.