use runtime way to avoid human mistake for clicking on UIButton repeatedly, original article refer to https://icetime17.github.io/2016/07/03/2016-07/iOS-%E5%A6%82%E4%BD%95%E5%9C%A8Swift%E9%A1%B9%E7%9B%AE%E4%B8%AD%E4%BD%BF%E7%94%A8runtime/

UIButtonAvoidMissClick.swift

import UIKit
// MARK: - UIButton Related
public extension UIButton {
    private struct cs_associatedKeys {
        static var accpetEventInterval  = "cs_acceptEventInterval"
        static var acceptEventTime      = "cs_acceptEventTime"
    }
    // 重复点击的间隔
    var cs_accpetEventInterval: NSTimeInterval {
        get {
            if let accpetEventInterval = objc_getAssociatedObject(self, &cs_associatedKeys.accpetEventInterval) as? NSTimeInterval {
                return accpetEventInterval
            }
            return 1.0
        }
        set {
            objc_setAssociatedObject(self, &cs_associatedKeys.accpetEventInterval, newValue as NSTimeInterval, .OBJC_ASSOCIATION_RETAIN_NONATOMIC)
        }
    }
    var cs_acceptEventTime: NSTimeInterval {
        get {
            if let acceptEventTime = objc_getAssociatedObject(self, &cs_associatedKeys.acceptEventTime) as? NSTimeInterval {
                return acceptEventTime
            }
            return 1.0
        }
        set {
            objc_setAssociatedObject(self, &cs_associatedKeys.acceptEventTime, newValue as NSTimeInterval, .OBJC_ASSOCIATION_RETAIN_NONATOMIC)
        }
    }
    override public class func initialize() {
        let before: Method = class_getInstanceMethod(self, #selector(UIButton.sendAction(_:to:forEvent:)))
        let after: Method  = class_getInstanceMethod(self, #selector(UIButton.cs_sendAction(_:to:forEvent:)))
        method_exchangeImplementations(before, after)
    }
    func cs_sendAction(action: Selector, to target: AnyObject?, forEvent event: UIEvent?) {
        if NSDate().timeIntervalSince1970 - self.cs_acceptEventTime < self.cs_accpetEventInterval {
            return
        }
        if self.cs_accpetEventInterval > 0 {
            self.cs_acceptEventTime = NSDate().timeIntervalSince1970
        }
        self.cs_sendAction(action, to: target, forEvent: event)
    }
}