ios - Retrieve WebVie URL Swift || Cannot assign value of type 'ViewController' to type 'UIWebViewDelegate?' -

i load web page able retrieve current web page after user has logged in , been redirected. have achieved loading of webpage unable retrieve url after user has moved new page. current code have is:

@iboutlet weak var webview: uiwebview! override func viewdidload() {     super.viewdidload()     // additional setup after loading view, typically nib.     needlogin() }  func needlogin(){     let url =  url(string:  "https://www.instagram.com/oauth/authorize/?client_id="+clientid+"&redirect_uri="+redirecturl+"&response_type=token&scope=likes+comments+public_content+follower_list+relationships")     let urlrequest = urlrequest(url: url!)     webview.loadrequest(urlrequest)    self.webview.delegate = self  }  func webviewdidfinishload(_ webview: uiwebview){  } 

the problem have self.webview.delegate = self . error message :

cannot assign value of type 'viewcontroller' type 'uiwebviewdelegate?'

furthermore have no clue how retrieve url @ , appreciate help.

you need conform uiwebviewdelegate protocol. need

class viewcontroller: uiviewcontroller, uiwebviewdelegate {  } 

at top of class definition.

to retrieve url after webview has finished loading, within webviewdidfinishload method, need webview.request.url.

disclaimer: should using wkwebview rather uiwebview ios + applications. way example:

import uikit import webkit  class webviewcontroller: uiviewcontroller, wknavigationdelegate {      var wkwebview : wkwebview?      override func viewdidload() {         super.viewdidload()         needslogin()      }     func needslogin() {         wkwebview = wkwebview.init(frame: self.view.bounds)         wkwebview?.navigationdelegate = self         self.view.addsubview(wkwebview!)          let url =  url(string:  "https://www.instagram.com/oauth/authorize/? client_id="+clientid+"&redirect_uri="+redirecturl+"&response_type=token&scope=likes+comments+public_content+follower_list+relationships")         let urlrequest: urlrequest = urlrequest.init(url: url!)         wkwebview?.load(urlrequest)     }      override func didreceivememorywarning() {         super.didreceivememorywarning()         // dispose of resources can recreated.     }      public func webview(_ webview: wkwebview, didfail navigation: wknavigation!, witherror error: error) {         print("\(error.localizeddescription)")     }    public func webview(_ webview: wkwebview, didfinish navigation: wknavigation!) {    // url need.    let url = webview.url    }   }