IOS 使用UIWebView加载网页

 1 class ViewController：UIViewController,
 UIWebViewDelegate {
 2
 3 override func viewDidLoad() {
 4 super.viewDidLoad()
 5 // Do any additional setup after loading the view,
 typically from a nib.
 6
 7 let bounds = UIScreen.main.bounds
 8 let frame = CGRect(x：0, y：0, width：bounds.width,
 height：bounds.height)
 9 let webView = UIWebView(frame：frame)
 10 webView.delegate = self
 11 webView.backgroundColor = UIColor.clear
 12
 13 let url = URL(string：“https：//www.apple.com/”)
 14 let urlRequest = NSURLRequest(url：url！)
 15 webView.loadRequest(urlRequest as URLRequest)
 16
 17 self.view.addSubview(webView)
 18 }
 19
 20 func webViewDidStartLoad(_ webView：UIWebView)
 {
 21
 UIApplication.shared.isNetworkActivityIndicatorVisible =
 true
 22 }
 23
 24 func webViewDidFinishLoad(_ webView：UIWebView)
 {
 25
 UIApplication.shared.isNetworkActivityIndicatorVisible =
 false
 26 }
 27 }