iosswiftuiviewuiwebviewsvprogresshud

Show SVProgressHUD while UIWebView loads


I have a UIWebView set as the view in a ViewController. I would like to display an SVProgressHUD activity indicator while the webpage loads and then dismiss it when it has finished, but I can't seem to get it to work. The web page loads fine, but the indicator is never shown. I know SVProgressHUD is set up correctly and functions, but not in the functions I have.

I believe because I do not have a UIWebView actually in the scene in the IB, but rather the ViewController sets the view to a UIWebView, the code I am using cannot target it. Please correct me if I'm wrong.

This is my code:

import UIKit
import SVProgressHUD

class ViewController: UIViewController, UIWebViewDelegate {

    override func viewDidLoad() {
        super.viewDidLoad()



        if let url = URL(string: "https://www.google.com") {
            let webView = UIWebView(frame: self.view.frame)
            let urlRequest = URLRequest(url: url)
            webView.loadRequest(urlRequest as URLRequest)
            webView.scalesPageToFit = true;
            webView.scrollView.showsHorizontalScrollIndicator = false;
            webView.scrollView.showsVerticalScrollIndicator = false;
            self.view.addSubview(webView)


        }
    }

    func webViewDidStartLoad(_ webView: UIWebView) {
        SVProgressHUD.show()
    }
    func webViewDidFinishLoad(_ webView: UIWebView) {
        SVProgressHUD.dismiss()
    }
    func webView(_ webView: UIWebView, didFailLoadWithError error: Error) {
        SVProgressHUD.dismiss()
    }
}

Any help is greatly appreciated.


Solution

  • UIWebView is deprecated, use WKWebView

    import UIKit
    import WebKit
    import SVProgressHUD
    
    class ViewController: UIViewController {
    
        override func viewDidLoad() {
            super.viewDidLoad()
            if let url = URL(string: "https://www.google.com") {
                let webView = WKWebView(frame: self.view.frame)
                webView.navigationDelegate = self
                self.view.addSubview(webView)
                webView.load(URLRequest(url: url))
                SVProgressHUD.show()
            }
        }
    }
    
    extension ViewController: WKNavigationDelegate {
        func webView(_ webView: WKWebView, didFailProvisionalNavigation navigation: WKNavigation!, withError error: Error) {
            print(error.localizedDescription)
            SVProgressHUD.dismiss()
        }
    
        func webView(_ webView: WKWebView, didStartProvisionalNavigation navigation: WKNavigation!) {
            print("Strat to load")
        }
    
        func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
            print("finish to load")
            SVProgressHUD.dismiss()
        }
    }