iOS App icon and launch images icons size

Program apes hard to write the app will soon be online, submitted to the App Store audit when it is very troublesome. iOS's requirements for icon size are insane compared to Android apps. On the Internet any search is too complex to introduce themselves, and in Xcode, you can see the resolution of the icons you need for your project.
The app Icon and launch images required by iOS will vary depending on the iOS version supported by the app, and whether the support device is iphone,ipad or universal. For example, I did the project deployment information as follows:

Because compatible with pad and iphone, but also compatible with ios6.1 above system, the required picture is more unusual.
First, find the app Icons and Launch Images

If there is no content in the right box, you can click the blue icon to create a new picture name.
Then, you can find the image file for the images.xcassets. You can see all the required icons on the right and the resolution can be viewed in Attributes Inspector.

The following thing is to find the art yaotu, all kinds of resolution, a drag on the line, remember to a resolution of 1024 * 1024, shelves will be used. (like our hard-pressed ape, we have to do it ourselves--.) ）
Finish the app Icon,launch Images is also the same operation. Once the picture is done, click Product-archive. After the package is complete, click Validate, and if you have no problem, submit the review.

iOS App icon and launch images icons size