是否需要提供@1x 图片以及@2x 才能成功提交iOS？

Question

假设我们的下一个 iPhone 项目不支持 iPhone 3GS，我们是否仍需要提供 @1x 图片才能成功提交我们的申请？

Answer 1

我已向 Apple 发送支持请求以澄清这一点，这是他们的官方回复：

Hello Vladimir,

Thanks for your patience while we investigated this issue. I’ve confirmed with both App Review and iTunes Connect that there is no restriction on including any particular asset size (1x, 2x, or 3x) in your bundle.

If iOS needs an icon for a specific use, and an icon of that size is not available, iOS will choose another icon and scale it to its needs.

If your app is not iPhone-specific (that is, it can be run on iPad, either natively or in compatibility mode), be aware that iPad 2 is not Retina-class, and can run iOS 7 and iOS 8, and defaults to loading 1x icons if available.

Just for reference, Technical Q&A QA1686 App Icons in iPad and iPhone lists all the icon sizes we recommend.

https://developer.apple.com/library/ios/qa/qa1686/_index.html

Thanks,

Jason.