Launch Screen that behaves exactly like Launch Image

Question

In order to get iPad Pro to use full resolution at launch, we have to use a Launch Screen File.

I\'ve never used a Launch Screen XIB/Storyboard before, because my ap

Answer 1

A different approach is using spacer views that position the correct image in the visible area and move the other one off screen (see my original answer to a similar question here).

You can't provide different images for different screen sizes (iPhone 4, iPhone X, ...), but if you want different images for iPhone and iPad and different images for portrait and landscape this solution is for you.

I created an example project on github if you want to try it out. It works on iPad and iPhone.

The important constraints are

PortraitSpacer.width ≤ 5 × view.width
PortraitSpacer.width ≤ 5 × view.height

LandscapeSpacer.width ≥ 5 × view.width
LandscapeSpacer.width ≥ 5 × view.height

PositionSpacer.width = 5 × view.width

where view.width and view.height are the main view's width and height.

The PortraitSpacer positions the portrait image at 5 × min(view.width, view.height), the LandscapeSpacer positions the landscape image at 5 × max(view.width, view.height), and the PositionSpacer has the same width as PortraitSpacer in portrait mode and the same width as LandscapeSpacer in landscape mode.

We multiply everything with 5 so the two images do not overlap. This works for all devices where the following is true

5 × min(view.width, view.height) + max(view.width, view.height) ≤ 5 × max(view.width, view.height)

In landscape mode this would mean

5 / 4 ≤ view.width / view.height

which is the case for all current devices: iPad has the lowest aspect ratio with 4:3 which is still greater than 5:4.

You can then of course configure images per device (iPhone, iPad) in the asset catalog.