Emoji keyboard SwiftUi

Question

I want to make an emoji text box where it would be possible to write the only emoji and better so that the emoji keyboard appears. The emoji keyboard is standard. I am writing a program in SwiftUI. Found this code, does it work for me? If so, how do you use it? If not, which one do you need?

Thank!

class EmojiTextField: UITextField {

       // required for iOS 13
       override var textInputContextIdentifier: String? { "" } // return non-nil to show the Emoji keyboard ¯\_(ツ)_/¯ 

        override var textInputMode: UITextInputMode? {
            for mode in UITextInputMode.activeInputModes {
                if mode.primaryLanguage == "emoji" {
                    return mode
                }
            }
            return nil
        }

    override init(frame: CGRect) {
            super.init(frame: frame)

            commonInit()
        }

        required init?(coder: NSCoder) {
            super.init(coder: coder)

             commonInit()
        }

        func commonInit() {
            NotificationCenter.default.addObserver(self,
                                                   selector: #selector(inputModeDidChange),
                                                   name: UITextInputMode.currentInputModeDidChangeNotification,
                                                   object: nil)
        }

        @objc func inputModeDidChange(_ notification: Notification) {
            guard isFirstResponder else {
                return
            }

            DispatchQueue.main.async { [weak self] in
                self?.reloadInputViews()
            }
        }
    }

Answer 1

Use UIViewRepresentable for wrapped UITextField to SwiftUI

Here is a demo.

class UIEmojiTextField: UITextField {

    override func awakeFromNib() {
        super.awakeFromNib()
    }
    
    func setEmoji() {
        _ = self.textInputMode
    }
    
    override var textInputContextIdentifier: String? {
           return ""
    }
    
    override var textInputMode: UITextInputMode? {
        for mode in UITextInputMode.activeInputModes {
            if mode.primaryLanguage == "emoji" {
                self.keyboardType = .default // do not remove this
                return mode
            }
        }
        return nil
    }
}

struct EmojiTextField: UIViewRepresentable {
    @Binding var text: String
    var placeholder: String = ""
    
    func makeUIView(context: Context) -> UIEmojiTextField {
        let emojiTextField = UIEmojiTextField()
        emojiTextField.placeholder = placeholder
        emojiTextField.text = text
        emojiTextField.delegate = context.coordinator
        return emojiTextField
    }
    
    func updateUIView(_ uiView: UIEmojiTextField, context: Context) {
        uiView.text = text
    }
    
    func makeCoordinator() -> Coordinator {
        Coordinator(parent: self)
    }
    
    class Coordinator: NSObject, UITextFieldDelegate {
        var parent: EmojiTextField
        
        init(parent: EmojiTextField) {
            self.parent = parent
        }
        
        func textFieldDidChangeSelection(_ textField: UITextField) {
            DispatchQueue.main.async { [weak self] in
                self?.parent.text = textField.text ?? ""
            }
        }
    }
}

struct EmojiContentView: View {
    
    @State private var text: String = ""
    
    var body: some View {
        EmojiTextField(text: $text, placeholder: "Enter emoji")
    }
}

---

---

If you want to switch the keyboard from Normal to Emoji and vice versa. You can use the below code.

class UIEmojiTextField: UITextField {
    
    var isEmoji = false {
        didSet {
            setEmoji()
        }
    }
    
    override func awakeFromNib() {
        super.awakeFromNib()
    }
    
    private func setEmoji() {
        self.reloadInputViews()
    }
    
    override var textInputContextIdentifier: String? {
        return ""
    }
    
    override var textInputMode: UITextInputMode? {
        for mode in UITextInputMode.activeInputModes {
            if mode.primaryLanguage == "emoji" && self.isEmoji{
                self.keyboardType = .default
                return mode
                
            } else if !self.isEmoji {
                return mode
            }
        }
        return nil
    }
    
}

struct EmojiTextField: UIViewRepresentable {
    @Binding var text: String
    var placeholder: String = ""
    @Binding var isEmoji: Bool
    
    func makeUIView(context: Context) -> UIEmojiTextField {
        let emojiTextField = UIEmojiTextField()
        emojiTextField.placeholder = placeholder
        emojiTextField.text = text
        emojiTextField.delegate = context.coordinator
        emojiTextField.isEmoji = self.isEmoji
        return emojiTextField
    }
    
    func updateUIView(_ uiView: UIEmojiTextField, context: Context) {
        uiView.text = text
        uiView.isEmoji = isEmoji
    }
    
    func makeCoordinator() -> Coordinator {
        Coordinator(parent: self)
    }
    
    class Coordinator: NSObject, UITextFieldDelegate {
        var parent: EmojiTextField
        
        init(parent: EmojiTextField) {
            self.parent = parent
        }
        
        func textFieldDidChangeSelection(_ textField: UITextField) {
            parent.text = textField.text ?? ""
        }
    }
}

struct EmojiContentView: View {
    
    @State private var text: String = ""
    @State private var isEmoji: Bool = false
    
    var body: some View {
        
        HStack{
            EmojiTextField(text: $text, placeholder: "Enter emoji", isEmoji: $isEmoji)
            Button("EMOJI") {
                isEmoji.toggle()
            }.background(Color.yellow)
        }
    }
}