replaceEmoji.swift

import UIKit

class EmojiReadViewController: UIViewController {
    @IBOutlet weak var labelAndroidToIOS: UILabel!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        var dataFromAndroid = "😊😁 loream ipsum qeqeura dafult"
        let replace2 = dataAndroid2.replacingOccurrences(of: "[\\&#(.*?)\\;]", with: " ", options: .regularExpression)
        let array = replace2.components(separatedBy: " ")
        print(array)
        
        var boldKey33: [String] = []
        for item in array {
            if isStringAnInt(string: item) {
                let dataResult = String(Int(item)!, radix: 16)
                let str = String(UnicodeScalar(Int(dataResult, radix: 16)!)!)
                boldKey33.append(str)
                
            } else {
                print("data not a Int \(item)")
            }
        }
        print(boldKey33.description)
        
        while let itemEnd = dataAndroid2.range(of: "\\&#(.*?)\\;", options: .regularExpression, range: nil, locale: nil) {
            dataAndroid2.replaceSubrange(itemEnd, with: boldKey33.removeFirst())
        }
        
        labelAndroidToIOS.text = dataAndroid2
        print("Emoji android(DEC) to IOS(HEX):  \(dataAndroid2)")
        
    
    
    // Important for check data Int in string
    func isStringAnInt(string: String) -> Bool {
        return Int(string) != nil
    }
}