Swift Common Extension (UILabel)

The event

• Add click events
• Add the long press event

code

import Foundation
import UIKit


// MARK: - Add click events or long press events
typealias LabelAction = (UILabel) - > ()typealias LongPressAction = (UIGestureRecognizer) - > ()extension UILabel {
    private struct AssociatedKeys{
        static var actionKey = "actionKey"
        static var longPressKey = "longPressKey"

    }
    
    @objc dynamic var action: LabelAction? {
        set{
            objc_setAssociatedObject(self.&AssociatedKeys.actionKey, newValue, objc_AssociationPolicy.OBJC_ASSOCIATION_COPY)}get{
            if let action = objc_getAssociatedObject(self.&AssociatedKeys.actionKey) as? LabelAction{
                return action
            }
            return nil}}@objc dynamic var longPressAction: LongPressAction? {
        set{
            objc_setAssociatedObject(self.&AssociatedKeys.longPressKey, newValue, objc_AssociationPolicy.OBJC_ASSOCIATION_COPY)}get{
            if let action = objc_getAssociatedObject(self.&AssociatedKeys.longPressKey) as? LongPressAction{
                return action
            }
            return nil}}@objc func clickAction(a) {
        self.action?(self)}@objc func longPressGesture(sender:UIGestureRecognizer) {
        self.longPressAction?(sender);
    }
    
    
    /// Add click events
    /// -parameter action: callback event
    func addClickAction(action: @escaping LabelAction) {
        self.isUserInteractionEnabled = true
        let gesture = UITapGestureRecognizer(target: self, action: #selector(clickAction))
        self.action = action
        self.addGestureRecognizer(gesture)
    }
    
    /// Add the long press event
    /// -parameter action: callback event
    func addLongPressAction(action: @escaping LongPressAction) {
        self.isUserInteractionEnabled = true
        let gesture = UILongPressGestureRecognizer(target: self, action: #selector(longPressGesture))
        self.longPressAction = action
        self.addGestureRecognizer(gesture)
    }
    
}

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Demo: Github