What size images should be used to support two iphone resolutions?

Question

I have a few questions about screen resolution that I don't understand about. These questions suggest that my application will run on iOS 4.0 and above, as well as on iPhone 3GS or iPhone 4.

• If the splash screen size (default.png) is (960x640) or (480x320)?

• If the size of the application icon (Icon.png) is (57x57) or (114x114)?

• What about the other graphics that I can use in my application, such a graphic that represents a button? Should I always create these images for higher resolution, and the application reduces them? In other words, if I want the button image to be displayed on 3GS, which is 200x40, should I create an image with a resolution of 400x80 so that iPhone 4 can use it?

Thank!

Answer 1

A good guide for this can be found here: http://mobile.tutsplus.com/tutorials/iphone/preparing-your-iphone-app-for-higher-resolutions/

, 2 . , @2x . image.png 32x32 , [e-mail] 64x64. image.png Interface Builder .

. .

• (960x640 480x320) @2x.
• (57x57 114x114) @2x.
• @2x . ( ) @2x , .. UIImageViews . , , . .

, :

• /- UIImageView
• Retina Display

Answer 2

, , . ,

Default.png → (480x320)

Amd

[e-mail] → (960x640)