iOS: Subclassing UIWebView URLRequest crash - ios

Question

I'm subclassing UIWebView but when I trying to make a request it crash with this error:
fatal error: unexpectedly found nil while unwrapping an Optional value
Here is my implementation:
ViewController:
var web:MyWebView!
override func viewDidLoad() {
super.viewDidLoad()
self.webPage = MyWebView(frame: self.view.frame)
self.view.bringSubview(toFront: self.webPage!)
}
class MyWebView: UIWebView,UIWebViewDelegate {
let urlStr = "http://apple.com"
override init(frame: CGRect) {
super.init(frame: frame)
scalesPageToFit = true
scrollView.bounces = false
delegate = self
let urlRequest = URL(string: urlStr)
let request = URLRequest(url: urlRequest!)
self.loadRequest(request)
}
If check the value of urlRequest in the console:
po urlRequest
nil
Any of you knows what I'm doing wrong or why this urlRequest is set as nil?
I'll really appreciate your help.

Answer 1

This works for me fine
import UIKit
class MyWebView: UIWebView,UIWebViewDelegate {
let urlStr = "https://www.apple.com"
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
}
override init(frame: CGRect) {
super.init(frame: frame)
scalesPageToFit = true
scrollView.bounces = false
delegate = self
let urlRequest = URL(string: urlStr)
let request = URLRequest(url: urlRequest!)
self.loadRequest(request)
}
}
Then call it from a viewcontroller
import UIKit
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
override func viewDidAppear(_ animated: Bool) {
let webView = MyWebView.init(frame: self.view.frame)
self.view.addSubview(webView)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}