How to get all available emojis in an array in Swift

This SO seems to provide the answer

https://stackoverflow.com/questions/26170876/how-to-list-almost-all-emojis-in-swift-for-ios-8-without-using-any-form-of-loo

for i in 0x1F601...0x1F64F {
    let c = String(UnicodeScalar(i) ?? "-")
    print(c)
}

You should go beyond 1F64F,

https://stackoverflow.com/questions/30757193/find-out-if-character-in-string-is-emoji

0x1F600...0x1F64F, // Emoticons

8400...8447: // Combining Diacritical Marks for Symbols

9100...9300, // Misc items

0x2600...0x26FF, // Misc symbols

0x2700...0x27BF, // Dingbats

0xFE00...0xFE0F, // Variation Selectors

0x1F018...0x1F270, // Various asian characters

0x1F300...0x1F5FF, // Misc Symbols and Pictographs

0x1F680...0x1F6FF, // Transport and Map

0x1F1E6...0x1F1FF, // Regional country flags

0x1F900...0x1F9FF, // Supplemental Symbols and Pictographs

65024...65039, // Variation selector

However, you get some undefined (marked as ? at the end of ranges)

See here to skip them

https://stackoverflow.com/questions/41318999/is-there-a-way-to-know-if-an-emoji-is-supported-in-ios

Note, while searching, found this interesting link to generate emoji flags based on country code

www.timekl.com/blog/2017/08/31/swift-tricks-emoji-flags/

That ends up with the following code

func isEmoji(_ value: Int) -> Bool {
    switch value {
    case 0x1F600...0x1F64F, // Emoticons
    0x1F300...0x1F5FF, // Misc Symbols and Pictographs
    0x1F680...0x1F6FF, // Transport and Map
    0x1F1E6...0x1F1FF, // Regional country flags
    0x2600...0x26FF,   // Misc symbols 9728 - 9983
    0x2700...0x27BF,   // Dingbats
    0xFE00...0xFE0F,   // Variation Selectors
    0x1F900...0x1F9FF,  // Supplemental Symbols and Pictographs 129280 - 129535
    0x1F018...0x1F270, // Various asian characters           127000...127600
    65024...65039, // Variation selector
    9100...9300, // Misc items
    8400...8447: // Combining Diacritical Marks for Symbols
        return true
       
    default: return false
    }
}

extension Character {
    private static let refUnicodeSize: CGFloat = 8
    private static let refUnicodePng =
        Character("\u{1fff}").png(ofSize: Character.refUnicodeSize)
   
    func png(ofSize fontSize: CGFloat) -> Data? {
        let attributes = [NSAttributedString.Key.font:
            UIFont.systemFont(ofSize: fontSize)]
        let charStr = "\(self)" as NSString
        let size = charStr.size(withAttributes: attributes)
       
        UIGraphicsBeginImageContext(size)
        charStr.draw(at: CGPoint(x: 0,y :0), withAttributes: attributes)
       
        var png:Data? = nil
        if let charImage = UIGraphicsGetImageFromCurrentImageContext() {
            png = charImage.pngData()
        }
       
        UIGraphicsEndImageContext()
        return png
    }
   
    func unicodeAvailable() -> Bool {
        if let refUnicodePng = Character.refUnicodePng,
            let myPng = self.png(ofSize: Character.refUnicodeSize) {
            return refUnicodePng != myPng
        }
        return false
    }
}

for i in 8400...0x1F9FF where isEmoji(i) {
    if let scalar = UnicodeScalar(i) {
        let unicode = Character(scalar)
        if unicode.unicodeAvailable() {
            print(i, String(scalar))
            count += 1
        } else {
            notAvail += 1
            print(i)
        }
    } else {
        notCounted += 1
    }
}

print("Count", count, "Not counted", notCounted, "Not Avail", notAvail)