I am very new to Swift and iOS development so thank you so much in advance for helping me!
I have tried every example online and every page on this site and I cannot get my Activity Indicator to stop being displayed once the page completes loading in my WKWebview.
Any assistance would be so appreciated! Thank you!
import UIKit
import WebKit
class FirstViewController: UIViewController, WKUIDelegate, WKNavigationDelegate {
#IBOutlet var webView: WKWebView!
#IBOutlet var activityIndicator: UIActivityIndicatorView!
override func viewDidLoad() {
super.viewDidLoad()
webView.uiDelegate = self
activityIndicator.startAnimating()
activityIndicator.isHidden = true
activityIndicator.hidesWhenStopped = true
let url = Bundle.main.url(forResource: "Web/bulk_material_table", withExtension: "html")!
webView.loadFileURL(url, allowingReadAccessTo: url)
let request = URLRequest(url: url)
self.webView.load(request)
}
func showActivityIndicator(show: Bool) {
if show {
activityIndicator.startAnimating()
} else {
activityIndicator.stopAnimating()
}
}
func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
showActivityIndicator(show: false)
}
func webView(_ webView: WKWebView, didStartProvisionalNavigation navigation: WKNavigation!) {
showActivityIndicator(show: true)
}
func webView(_ webView: WKWebView, didFail navigation: WKNavigation!, withError error: Error) {
showActivityIndicator(show: false)
}
}
Just replace
webView.uiDelegate = self
with
webView.navigationDelegate = self
And it will work because
func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
showActivityIndicator(show: false)
}
is WKNavigationDelegate's delegate method.
Related
I want to disable the context menu ie any action to maintain an element of my WKWebView swift 4
import UIKit
import WebKit
class ViewController: UIViewController, WKNavigationDelegate {
var webView: WKWebView!
override func loadView() {
webView = WKWebView()
webView.navigationDelegate = self
view = webView
}
override func viewDidLoad() {
super.viewDidLoad()
// 1
let url = URL(string: "https://www.google.com")!
webView.load(URLRequest(url: url))
// 2
let refresh = UIBarButtonItem(barButtonSystemItem: .refresh, target: webView, action: #selector(webView.reload))
toolbarItems = [refresh]
navigationController?.isToolbarHidden = false
}
func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
title = webView.title
}
func webView(_ webView: WKWebView, didStartProvisionalNavigation navigation: WKNavigation!) {
//show progress indicator
}
func webView(_ webView: WKWebView, didFail navigation: WKNavigation!, withError error: Error) {
//show error
}
func webView(_ webView: WKWebView, didFailProvisionalNavigation navigation: WKNavigation!, withError error: Error) {
//show error
}
private weak var lastPresentedController : UIViewController?
override func dismiss(animated flag: Bool, completion: (() -> Void)? = nil) {
// WKWebView actions sheets workaround
if presentedViewController != nil && lastPresentedController != presentedViewController {
lastPresentedController = presentedViewController;
presentedViewController?.dismiss(animated: flag, completion: {
completion?();
self.lastPresentedController = nil;
});
} else if lastPresentedController == nil {
super.dismiss(animated: flag, completion: completion);
}
}
}
I need to add a WKWebview to load web content, inside the content view of UIScrollView.
I'm using the Apple code to load a web page, my outlet viewForWebview is linked correctly, and didFinish is called.
class ViewController: UIViewController, WKUIDelegate, WKNavigationDelegate {
var webView: WKWebView!
#IBOutlet var viewForWebview: UIView!
override func loadView() {
super.loadView()
let myConfiguration = WKWebViewConfiguration()
webView = WKWebView(frame: .zero, configuration: myConfiguration)
webView.uiDelegate = self
webView.navigationDelegate = self
viewForWebview = webView
}
override func viewDidLoad() {
super.viewDidLoad()
let url = URL(string: "https://www.google.com.au")
let request = URLRequest(url: url!)
webView.load(request)
}
func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
print("Finished navigating to url \(String(describing: webView.url))")
}
func webView(_ webView: WKWebView, didFail navigation: WKNavigation!, withError error: Error) {
print(error)
}
}
But my the WKWebview is blank:
Just to test, I tried to display the WKWebview directly inside the content view of the scroll view, and it works.
Why is it not working as subview of the content?
Don't override loadView for such actions , you need
class ViewController: UIViewController, WKUIDelegate, WKNavigationDelegate {
var webView: WKWebView!
#IBOutlet var viewForWebview: UIView!
override func viewDidLoad() {
super.viewDidLoad()
let myConfiguration = WKWebViewConfiguration()
webView = WKWebView(frame:.zero, configuration: myConfiguration)
webView.uiDelegate = self
webView.navigationDelegate = self
viewForWebview.addSubview(webView)
webView.translatesAutoresizingMaskIntoConstraints = false
NSLayoutConstraint.activate([
webView.topAnchor.constraint(equalTo: viewForWebview.topAnchor),
webView.bottomAnchor.constraint(equalTo: viewForWebview.bottomAnchor),
webView.leadingAnchor.constraint(equalTo: viewForWebview.leadingAnchor),
webView.trailingAnchor.constraint(equalTo: viewForWebview.trailingAnchor)
])
let url = URL(string: "https://www.apple.com")
let request = URLRequest(url: url!)
webView.load(request)
}
func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
print("Finished navigating to url \(String(describing: webView.url))")
}
func webView(_ webView: WKWebView, didFail navigation: WKNavigation!, withError error: Error) {
print(error)
}
}
i want to hide certain html elements in wkwebview using swift 4, xcode 9. i know how to do it in android and have added the code below. i just need an equivalent code for ios in swift 4 for wkwebView.
myWebView.setWebViewClient(new WebViewClient()
{
#Override
public void onPageFinished(WebView view, String url)
{
myWebView.loadUrl("javascript:(function() { " +
"document.getElementById('divHeader')
[0].style.display='none'; " +
"})()");
}
});
myWebView.loadUrl(URL);
Use WKWebView
import WebKit
class FirstViewController: UIViewController, WKNavigationDelegate {
#IBOutlet weak var webVw: WKWebView!
override func viewDidLoad() {
super.viewDidLoad()
webVw.navigationDelegate = self
loadmyPage(htmlstr: "https://www.mywebsite.com")
}
func loadmyPage(htmlstr:String){
let url = URL (string: htmlstr)
let request = URLRequest(url: url!)
webVw.load(request)
}
//MARK:- WKNavigationDelegate
func webView(_ webView: WKWebView, didFailProvisionalNavigation navigation: WKNavigation!, withError error: Error) {
print(error.localizedDescription)
}
func webView(_ webView: WKWebView, didStartProvisionalNavigation navigation: WKNavigation!) {
print("Start to load")
}
func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
print("finish to load")
let elementID = "right_sidebar"
let removeElementIdScript = "var element = document.getElementById('\(elementID)'); element.parentElement.removeChild(element);"
webView.evaluateJavaScript(removeElementIdScript) { (response, error) in
debugPrint("Am here")
}
}
I want to create a wkwebview in my iOS app, and I want to add an activity indicator to it. I want when we click all the button or part in the webview, it will appear the activity indicator. Can you give me some code to do this? Here's my code right now. It only show the indicator when start load the website but when we click at the process, the indicator not appear.
import UIKit
import WebKit
class ViewController: UIViewController,WKNavigationDelegate,UIWebViewDelegate {
#IBOutlet weak var activityIndicator: UIActivityIndicatorView!
#IBOutlet weak var webView: WKWebView!
#IBOutlet var containerView: UIView? = nil
override func viewDidLoad() {
super.viewDidLoad()
self.view.addSubview(self.activityIndicator)
self.view.addSubview(self.webView)
let url:URL = URL(string : "https://www.facebook.com/")!
let urlRequest : URLRequest = URLRequest(url: url)
webView.load(urlRequest)
//activity indicator
self.webView.addSubview(self.activityIndicator)
self.activityIndicator.startAnimating()
self.webView.navigationDelegate = self
self.activityIndicator.hidesWhenStopped = true
//refresh
webView.scrollView.bounces = true
let refreshControl = UIRefreshControl()
refreshControl.addTarget(self, action: #selector(ViewController.refreshWebView), for: UIControlEvents.valueChanged)
webView.scrollView.addSubview(refreshControl)
}
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear( animated )
let url:URL = URL(string : "https://www.facebook.com/")!
let urlRequest : URLRequest = URLRequest(url: url)
webView.load(urlRequest)
}
func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
activityIndicator.stopAnimating()
}
func webView(_ webView: WKWebView, didFail navigation: WKNavigation!, withError error: Error) {
activityIndicator.stopAnimating()
}
#objc func refreshWebView(sender: UIRefreshControl) {
print("refersh")
sender.endRefreshing()
}
}
Below code will help to add activity indicator in Navigation Bar. So no need to create any subviews. This works with Swift 4.
import Foundation
import UIKit
import WebKit
class ContactVC: UIViewController, WKNavigationDelegate {
var webView: WKWebView!
var activityIndicator: UIActivityIndicatorView!
override func loadView() {
webView = WKWebView()
webView.navigationDelegate = self
view = webView
activityIndicator = UIActivityIndicatorView(frame: CGRect(x: 0, y: 0, width: 20, height: 20))
activityIndicator.activityIndicatorViewStyle = UIActivityIndicatorViewStyle.gray
activityIndicator.hidesWhenStopped = true
let barButton = UIBarButtonItem(customView: activityIndicator)
self.navigationItem.setRightBarButton(barButton, animated: true)
}
override func viewDidLoad() {
super.viewDidLoad()
let url = URL(string: "https://www.facebook.com/")!
webView.load(URLRequest(url: url))
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func showActivityIndicator(show: Bool) {
if show {
// Start the loading animation
activityIndicator.startAnimating()
} else {
// Stop the loading animation
activityIndicator.stopAnimating()
}
}
//MARK:- WKNavigationDelegate
func webView(_ webView: WKWebView, didStartProvisionalNavigation navigation: WKNavigation!) {
print("Start to load")
showActivityIndicator(show: true)
}
func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
print("Finish to load")
title = webView.title
showActivityIndicator(show: false)
}
func webView(_ webView: WKWebView, didFail navigation: WKNavigation!, withError error: Error) {
print(error.localizedDescription)
showActivityIndicator(show: false)
}
func webView(_ webView: WKWebView, didFailProvisionalNavigation navigation: WKNavigation!, withError error: Error) {
print(error.localizedDescription)
showActivityIndicator(show: false)
}
}
Implement didStartProvisionalNavigation delegate function.
func webView(_ webView: WKWebView, didStartProvisionalNavigation navigation: WKNavigation!) {
activityIndicator.startAnimating()
}
I'm new to Swift and I need some help implementing the UIActivityInidicatorView to WKWebView. It should appear while the webpage is loading and disappear when the website finished loading.
Here is my code so far:
import UIKit
import WebKit
class ViewController: UIViewController {
#IBOutlet weak var webView: WKWebView!
override func viewDidLoad() {
super.viewDidLoad()
let myURL = URL(string: "https://www.google.com")
let myRequest = URLRequest(url: myURL!)
webView.load(myRequest)
}
}
import UIKit
import WebKit
class ViewController: UIViewController, WKNavigationDelegate, WKUIDelegate {
var webView: WKWebView!
var activityIndicator: UIActivityIndicatorView!
override func viewDidLoad() {
webView = WKWebView(frame: CGRect.zero)
webView.navigationDelegate = self
webView.uiDelegate = self
view.addSubview(webView)
activityIndicator = UIActivityIndicatorView()
activityIndicator.center = self.view.center
activityIndicator.hidesWhenStopped = true
activityIndicator.activityIndicatorViewStyle = UIActivityIndicatorViewStyle.gray
view.addSubview(activityIndicator)
webView.load(URLRequest(url: URL(string: "http://google.com")!))
}
func showActivityIndicator(show: Bool) {
if show {
activityIndicator.startAnimating()
} else {
activityIndicator.stopAnimating()
}
}
func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
showActivityIndicator(show: false)
}
func webView(_ webView: WKWebView, didStartProvisionalNavigation navigation: WKNavigation!) {
showActivityIndicator(show: true)
}
func webView(_ webView: WKWebView, didFail navigation: WKNavigation!, withError error: Error) {
showActivityIndicator(show: false)
}
}
I finally got it working like this:
import UIKit
import WebKit
class ViewController: UIViewController, WKNavigationDelegate {
#IBOutlet weak var webView: WKWebView!
#IBOutlet weak var ActivityIndicator: UIActivityIndicatorView!
func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
ActivityIndicator.stopAnimating()
}
override func viewDidLoad() {
super.viewDidLoad()
let myURL = URL(string: "https://www.google.com/")
let myRequest = URLRequest(url: myURL!)
webView.navigationDelegate = self
webView.load(myRequest)
}
}
Try this i hope this will help you
import UIKit
import WebKit
class ViewController: UIViewController, WKNavigationDelegate {
#IBOutlet weak var webView: WKWebView!
#IBOutlet weak var ActivityIndicator: UIActivityIndicatorView!
override func viewDidLoad() {
super.viewDidLoad()
let myURL = URL(string: "https://www.google.com")
let myRequest = URLRequest(url: myURL!)
webView.navigationDelegate = self
webView.load(myRequest)
}
func webView(_ webView: WKWebView,didStart navigation: WKNavigation!) {
print("Start Page Loading")
ActivityIndicator.statAnimating()
}
func webView(_ webView: WKWebView,didFinish navigation: WKNavigation!) {
print("Page loaded")
ActivityIndicator.stopAnimating()
}
}