URL, NSURL - compiler errors in code from the standard samples - ios

Question

m.b. I'm asking stupid question, but I'm really newbie in Swift and iPhone programming. Using XCode 8.0.
I want to create WebView application and have taken next code from here: https://sourcefreeze.com/uiwebview-example-using-swift-in-ios/
My Code :
import UIKit
import Foundation
class ViewController: UIViewController {
#IBOutlet weak var myWebView: UIWebView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
let url = NSURL (string: "http://www.sourcefreeze.com");
let requestObj = NSURLRequest(URL: url!);
myWebView.loadRequest(requestObj);
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
Of course I've created UI object of UIWebView and connected it to controller:
#IBOutlet weak var myWebView: UIWebView!
During the build I receive next red alert:
'NSURL' is not implicitly convertible to 'URL'; did you mean to use 'as' to explicitly convert?
As I understand this code worked perfectly before 2 years. I guess that I'm missing something, but what?
Thanks for advance.

Answer 1

Try to use URL instead of NSURL as it is replaced with URL type in Swift 3
let url = URL(string: "http://www.sourcefreeze.com")
Here is the instruction from apple developer forum
The Swift overlay to the Foundation framework provides the URL
structure, which bridges to the NSURL class. The URL value type offers
the same functionality as the NSURL reference type, and the two can be
used interchangeably in Swift code that interacts with Objective-C
APIs. This behavior is similar to how Swift bridges standard string,
numeric, and collection types to their corresponding Foundation
classes.
For more information about value types, see Classes and Structures in
The Swift Programming Language (Swift 3) and Working with Cocoa
Frameworks in Using Swift with Cocoa and Objective-C (Swift 3).

Answer 2

It is the simplest way to solve issue:
let url = URL(string: "http://www.sourcefreeze.com")!
myWebView.load(URLRequest(url: url))
Xcode often tales you what is wrong. So from Xcode message it is possible to understand that NSURL should be converted to URL. Try to read relevant resources and bot use old tutorials. Swift is dynamically changes language always try to use up to date resources.

Answer 3

Try in this way
myWebView.loadRequest(NSURLRequest(URL: NSURL(string: "http://www.sourcefreeze.com")))
myWebView.delegate = self;
self.view.addSubview(myWebView)

Answer 4

This code worked:
let myUrl = URL (string: "http://www.sourcefreeze.com")!
let request = URLRequest(url: myUrl);
myWebView.loadRequest(request);
Now the WebView is invisible, but I'll try firstly to search the solution in a forum.