如何在Swift中的UIWebView中加载URL？

Question

我有以下代码:

UIWebView.loadRequest(NSURLRequest(URL: NSURL(string: "google.ca")))

我收到以下错误:

'NSURLRequest'无法转换为UIWebView.

知道问题是什么吗？

Answer 1

loadRequest:是一个实例方法,而不是类方法.您应该尝试使用UIWebview实例作为接收器而不是类本身来调用此方法.

webviewInstance.loadRequest(NSURLRequest(URL: NSURL(string: "google.ca")!))

但是,正如@radex在下面正确指出的那样,你也可以利用currying来调用这个函数:

UIWebView.loadRequest(webviewInstance)(NSURLRequest(URL: NSURL(string: "google.ca")!))   

Answer 2

Swift中的UIWebView

@IBOutlet weak var webView: UIWebView!

override func viewDidLoad() {
    super.viewDidLoad()
        let url = URL (string: "url here")
        let requestObj = URLRequest(url: url!)
        webView.loadRequest(requestObj)
    // Do any additional setup after loading the view.
}

Answer 3

试试这个:

1. 将UIWebView添加到View.

2. 使用助理编辑器连接UIWebview插座并命名您的"webview".

3. UIWebView加载URL.

   @IBOutlet weak var webView: UIWebView!
   
   override func viewDidLoad() {
      super.viewDidLoad()
       // Your webView code goes here
      let url = URL(string: "https://www.example.com")
      let requestObj = URLRequest(url: url! as URL)
      webView.load(requestObj)
   }
   

并运行应用程序!

Answer 4

Swift 3在URL和URLRequest上不再使用NS前缀,因此更新的代码将是:

let url = URL(string: "your_url_here")
yourWebView.loadRequest(URLRequest(url: url!))

Answer 5

在Swift 3中你可以这样做:

@IBOutlet weak var webview: UIWebView!

override func viewDidLoad() {
    super.viewDidLoad()

    // Web view load
    let url = URL (string: "http://www.example.com/")
    let request = URLRequest(url: url!)
    webview.loadRequest(request)
}

请记住添加权限Info.plist,添加以下值:

Answer 6

在 Swift 4 或 4.2 你可以使用像：

1. 添加 WKWebView 并连接到您的视图控制器。

2. 你的观点如下：

    import UIKit
    import WebKit
   
   class ViewController: UIViewController {
   
      @IBOutlet weak var wkwebview: WKWebView!
   
       override func viewDidLoad() {
          super.viewDidLoad()
   
         let request = URLRequest(url: URL(string: "**your URL**")!)        
         wkwebview?.load(request)
   
     }
   
   }
   

3. Allow Allow Arbitrary Loads true info.plist

     <key>NSAppTransportSecurity</key>
        <dict>
          <key>Allow Arbitrary Loads</key>
             <true/>
       </dict>
   

   注意 info.plist 将如下所示

Answer 7

Swift 3 - Xcode 8.1

 @IBOutlet weak var myWebView: UIWebView!

    override func viewDidLoad() {
            super.viewDidLoad()

            let url = URL (string: "https://ir.linkedin.com/in/razipour1993")
            let requestObj = URLRequest(url: url!)
            myWebView.loadRequest(requestObj)

        }

Answer 8

斯威夫特3

@IBOutlet weak var webview: UIWebView!
webview.loadRequest(URLRequest(url: URL(string: "https://www.yourvideo.com")!))

Answer 9

简单、经过测试且 100% 有效

导入网络工具包：

import WebKit

将 IBOutlet 分配给 webview：

var webView : WKWebView!

设置委托：

class ViewController: UIViewController , WKNavigationDelegate{

在viewDidLoad()上编写代码：

// loading URL :
let myBlog = "/sf/users/322009551/?tab=profile"
let url = NSURL(string: myBlog)
    let request = NSURLRequest(url: url! as URL)

    // init and load request in webview.
    webView = WKWebView(frame: self.view.frame)
    webView.navigationDelegate = self
    webView.load(request as URLRequest)
    self.view.addSubview(webView)
    self.view.sendSubview(toBack: webView)

编写委托方法：

//MARK:- WKNavigationDelegate

func webView(webView: WKWebView, didFailProvisionalNavigation navigation: WKNavigation!, withError error: NSError) {
print(error.localizedDescription)
}


 func webView(webView: WKWebView, didStartProvisionalNavigation navigation: WKNavigation!) {
print("Strat to load")
    }

 func webView(webView: WKWebView, didFinishNavigation navigation: WKNavigation!) {
print("finish to load")
}

看起来像：

Answer 10

在迅速5

import UIKit
import WebKit
class ViewController: UIViewController, WKUIDelegate {
   var webView: WKWebView!
   override func viewDidLoad() {
      super.viewDidLoad()
      let myURL = URL(string:"https://www.apple.com")
      let myRequest = URLRequest(url: myURL!)
      webView.load(myRequest)
   }
   override func loadView() {
      let webConfiguration = WKWebViewConfiguration()
      webView = WKWebView(frame: .zero, configuration: webConfiguration)
      webView.uiDelegate = self
      view = webView
   }
}