How to Load Url in Uiwebview in Swift

How to load URL in UIWebView in Swift?

loadRequest: is an instance method, not a class method. You should be attempting to call this method with an instance of UIWebview as the receiver, not the class itself.

webviewInstance.loadRequest(NSURLRequest(URL: NSURL(string: "google.ca")!))

However, as @radex correctly points out below, you can also take advantage of currying to call the function like this:

UIWebView.loadRequest(webviewInstance)(NSURLRequest(URL: NSURL(string: "google.ca")!))   

Swift 5

webviewInstance.load(NSURLRequest(url: NSURL(string: "google.ca")! as URL) as URLRequest)

How to load URL on WKWebView?

First of all you need to import

import WebKit

Following code is enough to open URL with WKWebView

let webView = WKWebView(frame: <#AnyRect#>)
let link = URL(string:"https://developer.apple.com/videos/play/wwdc2019/239/")!
let request = URLRequest(url: link)
webView.load(request)

Swift 4 WebKit webView does not load URL with added parameter

Your id is working fine:

override func viewDidLoad() {
    super.viewDidLoad()
    let webView = WKWebView(frame: CGRect(x: 0, y: 0, width: self.view.frame.size.width, height: self.view.frame.size.height))
    self.view.addSubview(webView)
    let url = URL(string: "https://www.youtube.com/watch?v=695PN9xaEhs")
    webView.load(URLRequest(url: url!))
}

How can I get the URL from webView in swift

You are not getting url because webView has not finished the loading of that requested URL, you can get that URL in webViewDidFinishLoad method of UIWebviewDelegate. For that you need to set delegate of webView with your current ViewController and need to implement UIWebviewDelegate.

webView.delegate = self

Now you can get current loaded URL of webView in webViewDidFinishLoad method.

func webViewDidFinishLoad(_ webView: UIWebView) {
    if let text = webView.request?.url?.absoluteString{
         print(text)
    }
}

How to load a url link that is inside a web view and keep it in that web view in SWIFT

In the webview delegate you are going to want to navigate to the new url using that same webview.

For you this means that inside your switch case you should use
loadRequest

loadRequest documentation

To fix your issue you should remove the line using UIApplication.sharedApplication().openURL(request.URL!)

and replace it with a call to loadRequest

func webView(webView: UIWebView, shouldStartLoadWithRequest request: NSURLRequest, navigationType: UIWebViewNavigationType) -> Bool {
    switch navigationType {

    case .LinkClicked:
        // Open links in Safari

        guard let newRequest = request as? URLRequest else { return false }

        webView.loadRequest(newRequest)
        return false
    default:
        // Handle other navigation types...
        return true
   }
}

Hope this helps! Have a nice day!

UIWebView not loading a new url

Problem in

while(webView.isLoading) {
    sender.isEnabled = false
}

You have frozen main thread and webView:decidePolicyForNavigationAction:request:frame:decisionListener: can't be invoke.

Try to use this:

func viewDidLoad()
{
    ...
    webView.delegate = self;//UIWebView
    //webView. navigationDelegate = self;//WKWebView
}

@IBAction func changeUrl(sender: UIButton) {
    if LEDON {
        let urlStr = NSString(format: "%@/?Led=0", self.url)
        let req = URLRequest(url: URL(string: urlStr as String)!)
        webView.loadRequest(req)
        sender.isEnabled = false
        LEDON = false;
    } else {
        let urlStr = NSString(format: "%@/?Led=1", self.url)
        let req = URLRequest(url: URL(string: urlStr as String)!)
        webView.loadRequest(req)
        sender.isEnabled = false
        LEDON = true;
    }
}

For UIWebView you need to use

func webViewDidFinishLoad(UIWebView)
{
    yourButton.isEnabled = true
}

For WKWebView

func webView(_ webView: WKWebView, 
            didFinish navigation: WKNavigation!)
{
    yourButton.isEnabled = true
}

======================================

If you want use while loop try to change it for this:

while(webView.isLoading) {
    sender.isEnabled = false
    RunLoop.current.run(until: Date(timeIntervalSinceNow: 0.5))
}

Swift UIWebView not loading http sites

This is due to the App Transport Security, a new protocol introduced by Apple at WWDC 2015. It doesn't allow any connections that are not HTTPS. You can disable it, however it's not recommended as it secures your app.

To disable it you have to edit the App's .plist. Simply right-click the .plist file and select Open As -> Source File and add the following code:

<key>NSAppTransportSecurity</key>
<dict>
    <key>NSAllowsArbitraryLoads</key><true/>
</dict>

This will allow HTTP requests.

Hope that helps, Julian.

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