WKWebView, introduced in iOS 8 and OS X Yosemite which replaces UIWebView in UIKit and WebView in AppKit UI, it is used to open Safari browser outside the app. It loads web pages faster and more efficiently.

So, in this blog we will learn how to Load an iFrame in WKWebView locally in an iOS App.

Let's see the code Example:

import UIKit
import WebKit

let bookData = BookData.sharedInstance
let quizData = QuizData.sharedInstance

class ViewController: UIViewController, WKUIDelegate {

    var webView: WKWebView! 

   override func loadView() {

// implementing web view and giving delegate

      let webViewConfiguration = WKWebViewConfiguration()
        webView = WKWebView(frame: .zero, configuration: webViewConfiguration)
        webView.uiDelegate = self
        view = webView
    }

    override func viewDidLoad() {
        super.viewDidLoad()

        // saving it in a local directory

        let htmlPath = URL(fileURLWithPath:
            Bundle.main.path(
                forResource: quizData.questions[quizData.curQuiz][quizData.curQuestion[quizData.curQuiz]].appendix,
                ofType: "html",
                inDirectory: "Bookshelf/Books/" + bookData.owned[bookData.bookSelected.ownedId].folder + bookData.owned[bookData.bookSelected.ownedId].version + "/quiz/appendix")!)
        webView.navigationDelegate = self
        webView.loadFileURL(htmlPath, allowingReadAccessTo: htmlPath) 

    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
}

extension ViewController: WKNavigationDelegate {
    // When page finishes loading then update ViewController title

    func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
        self.title = webView.title
    }
}

Above code will load an iFrame locally In WKWebView. For any question please feel free to write in comments below.