URI HTTPS request

Hi Gregory,

Here is a code; based on an app coda tutorial by Joyce Echessa; I hope she doesn't mind me posting it here. This is the View Controller: The App Delegate is a simply the template code.  I have commented out the clientID since this is a public post.

If I use localhost I find the data I need in WKNavigation error field; if I use the dropbox URL you gave me; I don't get an error... but don't know where I can find the access_token using Swift.

import UIKit

import WebKit

//  Created by Joyce Echessa on 1/6/15.

//  Copyright (c) 2015 Appcoda. All rights reserved.

class ViewController: UIViewController, UITextFieldDelegate, WKNavigationDelegate {

    var webView: WKWebView

    @IBOutlet weak var barView: UIView!

    @IBOutlet weak var urlField: UITextField!

    @IBOutlet weak var backButton: UIBarButtonItem!

    @IBOutlet weak var forwardButton: UIBarButtonItem!

    @IBOutlet weak var reloadButton: UIBarButtonItem!

    @IBOutlet weak var progressView: UIProgressView!

    required init?(coder aDecoder: NSCoder) {

        self.webView = WKWebView(frame: CGRectZero)

        super.init(coder: aDecoder)

        self.webView.navigationDelegate = self

    }

    override func viewDidLoad() {

        super.viewDidLoad()

        // Do any additional setup after loading the view, typically from a nib.

        barView.frame = CGRect(x:0, y: 0, width: view.frame.width, height: 30)

        view.insertSubview(webView, belowSubview: progressView)

        webView.translatesAutoresizingMaskIntoConstraints = false

        let height = NSLayoutConstraint(item: webView, attribute: .Height, relatedBy: .Equal, toItem: view, attribute: .Height, multiplier: 1, constant: -44)

        let width = NSLayoutConstraint(item: webView, attribute: .Width, relatedBy: .Equal, toItem: view, attribute: .Width, multiplier: 1, constant: 0)

        view.addConstraints([height, width])

        webView.addObserver(self, forKeyPath: "loading", options: .New, context: nil)

        webView.addObserver(self, forKeyPath: "estimatedProgress", options: .New, context: nil)

    // let url = NSURL(string:"https://www.dropbox.com/oauth2/authorize?client_id=X&response_type=token&redirect_uri=https://www.dropbox.com/1/oauth2/redirect_receiver&state=MTIzNDEyNeW=")

        let url = NSURL(string:"https://www.dropbox.com/oauth2/authorize?client_id=X&response_type=token&redirect_uri=https://localhost&state=MTIzNDEyNeW=")

        let request = NSURLRequest(URL:url!)

        print("request \(request)")

        webView.loadRequest(request)

        //backButton.enabled = false

        //forwardButton.enabled = false

    }

    override func didReceiveMemoryWarning() {

        super.didReceiveMemoryWarning()

        // Dispose of any resources that can be recreated.

    }

    override func viewWillTransitionToSize(size: CGSize, withTransitionCoordinator coordinator: UIViewControllerTransitionCoordinator) {

        barView.frame = CGRect(x:0, y: 0, width: size.width, height: 30)

    }

    func textFieldShouldReturn(textField: UITextField) -> Bool {

        urlField.resignFirstResponder()

        webView.loadRequest(NSURLRequest(URL:NSURL(string: urlField.text!)!))

        print("urlField.text \(urlField.text!)")

        return false

    }

    @IBAction func back(sender: UIBarButtonItem) {

        webView.goBack()

    }

    @IBAction func forward(sender: UIBarButtonItem) {

        webView.goForward()

    }

    @IBAction func reload(sender: UIBarButtonItem) {

        let request = NSURLRequest(URL:webView.URL!)

        print("reload \(request)")

        webView.loadRequest(request)

    }

    override func observeValueForKeyPath(keyPath: String?, ofObject object: AnyObject?, change: [String : AnyObject]?, context: UnsafeMutablePointer<()>) {

        if (keyPath == "loading") {

            backButton.enabled = webView.canGoBack

            forwardButton.enabled = webView.canGoForward

        }

        if (keyPath == "estimatedProgress") {

            progressView.hidden = webView.estimatedProgress == 1

            progressView.setProgress(Float(webView.estimatedProgress), animated: true)

        }

    }

    func webView(webView: WKWebView, didFailProvisionalNavigation navigation: WKNavigation!, withError error: NSError) {

        print("WKNavigation \(error)")

        let alert = UIAlertController(title: "Error", message: error.localizedDescription, preferredStyle: .Alert)

        alert.addAction(UIAlertAction(title: "Ok", style: .Default, handler: nil))

        presentViewController(alert, animated: true, completion: nil)

    }

    func webView(webView: WKWebView, didFinishNavigation navigation: WKNavigation!) {

        progressView.setProgress(0.0, animated: false)

    }

}