Add keyboardRequiresUserInteraction to WKWebViews iOS 11.3

WKWebViews+keyboardRequiresUserInteraction.swift

import Foundation
import WebKit

typealias ClosureType =  @convention(c) (Any, Selector, UnsafeRawPointer, Bool, Bool, Bool, Any?) -> Void

extension WKWebView{
    var keyboardDisplayRequiresUserAction: Bool? {
        get {
            return self.keyboardDisplayRequiresUserAction
        }
        set {
            self.setKeyboardRequiresUserInteraction(newValue ?? true)
        }
    }
    
    func setKeyboardRequiresUserInteraction( _ value: Bool) {
        if #available(iOS 11.3, *) {
            let WKContentView: AnyClass = NSClassFromString("WKContentView")!
            let sel: Selector =
                sel_getUid("_startAssistingNode:userIsInteracting:blurPreviousNode:changingActivityState:userObject:")
            let method = class_getInstanceMethod(WKContentView, sel)
            let originalImp: IMP = method_getImplementation(method)
            let original: ClosureType = unsafeBitCast(originalImp, to: ClosureType.self)
            let block : @convention(block) (Any, UnsafeRawPointer, Bool, Bool, Bool, Any?) -> Void = { (me, arg0, arg1, arg2, arg3, arg4) in
                original(me, sel, arg0, !value, arg2, arg3, arg4)
            }
            let imp: IMP = imp_implementationWithBlock(block)
            method_setImplementation(method, imp)
        }
    }
}

it doesn't work for me
in ios9, keybaord appear and then dismiss automatically.
in ios11, keyboard doesn't appear.

Make sure your HTML text field has AutoFocus = true @devravenio