Swift中的UIWebView问题[重复]

Posted 2023-02-22

【中文标题】Swift中的UIWebView问题[重复]

【英文标题】：UIWebView Issue in Swift [duplicate]

【发布时间】：2016-01-16 02:21:31

【问题描述】：

我的 UIWebView 将无法加载，我非常困惑为什么。Webview 几周前还在工作。它链接到的站点已更新。但是由于某种原因，现在我发送给它的任何链接都不起作用。我尝试清除缓存。我有点迷失为什么这不会出现。我手机上的互联网工作正常。故事板中的所有内容都已正确连接。

活动指示器一直在旋转。我的警报来自应该发生的 didFailLoadWithError，但很高兴弄清楚它为什么无法连接。任何帮助都会很棒，谢谢。

class CommunityViewController: UIViewController, UIWebViewDelegate 

@IBOutlet weak var activityIndicator: UIActivityIndicatorView!
@IBOutlet weak var communityWeb: UIWebView!
var refreshControl:UIRefreshControl!
let url = "http://www.google.com"


override func viewWillAppear(animated: Bool) 
    NSURLCache.sharedURLCache().removeAllCachedResponses()
    NSURLCache.sharedURLCache().diskCapacity = 0
    NSURLCache.sharedURLCache().memoryCapacity = 0

override func viewDidLoad() 
    super.viewDidLoad()

    self.communityWeb.delegate = self


    let requestURL = NSURL(string:url)
    let request = NSURLRequest(URL: requestURL!, cachePolicy: NSURLRequestCachePolicy.ReloadIgnoringLocalAndRemoteCacheData,
        timeoutInterval: 3.0)

    communityWeb.loadRequest(request)

    self.refreshControl = UIRefreshControl()
    self.refreshControl.attributedTitle = NSAttributedString(string: "")
    self.refreshControl.addTarget(self, action: "refresh:", forControlEvents: UIControlEvents.ValueChanged)

    self.communityWeb.scrollView.addSubview(refreshControl)    




func refresh(sender:AnyObject)

    let requestURL = NSURL(string:url)
    let request = NSURLRequest(URL: requestURL!)
    communityWeb.loadRequest(request)
    refreshControl.endRefreshing()


func webViewDidStartLoad(webView: UIWebView) // here show your indicator

    self.activityIndicator.startAnimating()


func webViewDidFinishLoad(webView: UIWebView) 

    self.activityIndicator.stopAnimating()
    self.activityIndicator.hidesWhenStopped = true
    self.communityWeb.scrollView.contentSize.width = self.communityWeb.frame.size.width



func webView(webView: UIWebView, didFailLoadWithError error: NSError?) 

        let alertView = SIAlertView(title: "Internet Connection", andMessage: "Connect to the internet to receive latest updates from the Community")
        alertView.addButtonWithTitle("OK", type: SIAlertViewButtonType.Default, handler:
            alertView in
                NSLog("pressed")
        )
        alertView.transitionStyle = SIAlertViewTransitionStyle.Fade
        alertView.show()

【参考方案1】：

我想你忘记更新你的 info.plist 文件了。

将此密钥添加到您的文件中：

懒惰的选择是：

<key>NSAppTransportSecurity</key>
<dict>
    <key>NSAllowsArbitraryLoads</key>
    <true/>
</dict>

或者您可以直接将其添加到您的 info.plist 中，它看起来像：

您可以添加一个特定的域，例如：

<key>NSAppTransportSecurity</key>
<dict>
  <key>NSExceptionDomains</key>
  <dict>
    <key>yourserver.com</key>
    <dict>
      <!--Include to allow subdomains-->
      <key>NSIncludesSubdomains</key>
      <true/>
      <!--Include to allow HTTP requests-->
      <key>NSTemporaryExceptionAllowsInsecureHTTPLoads</key>
      <true/>
      <!--Include to specify minimum TLS version-->
      <key>NSTemporaryExceptionMinimumTLSVersion</key>
      <string>TLSv1.1</string>
    </dict>
  </dict>
</dict>

【讨论】：

除了 PList 中有 NSAllowsArbitraryLoads 的苹果之外，苹果会不会？在论坛上阅读时，我得到了不同的答案。