UIImage+LaunchImage

UIImage+LaunchImage.swift

import UIKit

extension UIImage {
    /// Available launch images (as of 12 May 2021):
    /// [email protected]: 750x1334
    /// [email protected]: 828x1792
    /// [email protected]: 1242x2208
    /// [email protected]: 1125x2436
    /// [email protected]: 1242x2688
    static var launchImage: UIImage {
        let images: [(height: CGFloat, name: String)] = [
            (1334, "[email protected]"),
            (1792, "[email protected]"),
            (2208, "[email protected]"),
            (2436, "[email protected]")
        ]
        let image = images
            .first { $0.height <= UIScreen.main.nativeBounds.height }
            .map(\.name)
            .map(UIImage.init(named:))
        return (image ?? UIImage(named: "[email protected]"))!
    }
}

Here's a further suggestion, not sure if it's better:

extension UIImage {
    /// Available launch images (as of 12 May 2021):
    /// [email protected]: 750x1334
    /// [email protected]: 828x1792
    /// [email protected]: 1242x2208
    /// [email protected]: 1125x2436
    /// [email protected]: 1242x2688
    static var launchImage: UIImage {
        let images: [(height: CGFloat, name: String)] = [
            (1334, "[email protected]"),
            (1792, "[email protected]"),
            (2208, "[email protected]"),
            (2436, "[email protected]"),
            (.greatestFiniteMagnitude, "[email protected]") // The default if none match
        ]
        let image = images
            .first(where: { $0.height <= UIScreen.main.nativeBounds.height })
            .map(\.name)
            .flatMap(UIImage.init(named:))
        return image!
    }
}

The flatMap is required because the name is Optional, and then can be mapped to an UIImage?? and the flatMap can flatten that to a single level of optionality (I had to look that up)

Changing .first(where: { $0.height <= UIScreen.main.nativeBounds.height }) to .first(where: { $0.height >= UIScreen.main.nativeBounds.height }) should get you the correct logic.