如何在 iOS 中将全屏大小的图像设置为启动屏幕？

Question

So I need to set an image to a launch screen, it isn't just an icon with a background color, that most docs describe how to manipulate it. it is a full size image like this one . I want it to look the same on every iOS device (iPhone & iPad). But when I add new images set in assets, there are only three images to add, apparently this works perfect when using icon with a background, not a full-screen image. I tried to add the images to the launchscreen images set but it doesn't appear under the Image drop-down list in the storyboard.

EDIT

here's how the designer looks with the constraints:

the result on iPhone X (the image is for demonstration only):

The original launch screen doesn't look fit at all, given that its size is not available among the 3 images

Answer 1

In my case it works. I had the task of placing the image in full screen.Do not forget to remove Safe Area in View.

Answer 2

The screenshot share above don't see the X and Y constraints. This is could be of the issue. The width, Height and center constraints are provided.