无法在 swift 4 中加载本地 html 文件

Posted 2023-02-23

【中文标题】无法在 swift 4 中加载本地 html 文件

【英文标题】：unable to load local html file in swift 4

【发布时间】：2017-10-09 10:51:03

【问题描述】：

始终在文件路径中存储 nil 我的 html 文件位于项目根目录中

let myWebView:UIWebView = UIWebView(frame: CGRect(x:0, y:0, width: UIScreen.main.bounds.width, height:UIScreen.main.bounds.height))
           self.view.addSubview(myWebView) 

        do 
            guard let filePath = Bundle.main.path(forResource: "iphone_help", ofType: "html")
                else 
                    print ("File reading error")
                    return
                        
            let contents =  try String(contentsOfFile: filePath, encoding: .utf8)
            let baseUrl = URL(fileURLWithPath: filePath)
            webView.loadHTMLString(contents as String, baseURL: baseUrl)
        

        catch 
            print ("File HTML error")
        

【问题讨论】：

你能显示你的错误吗？

没有错误，但总是在文件路径中存储 nil

我必须使用构建阶段添加我的 html 文件

【参考方案1】：

 func loadWebView(htmlString : String) 
        //Give HTML file a name:
        //Constants.kTempFiled

        let htmlFileName: NSString =  "file.html"

        //Create a reference to the temporary directory that will store the HTML file:
        let tempDirectory: NSString = NSTemporaryDirectory() as NSString

        //Append reference temporary directory to include HTML file name:
        let htmlFilePath: NSString = tempDirectory.appendingPathComponent(htmlFileName as String) as NSString as NSString

        //Convert appended temporary directory NSString to an NSURL object:
        let htmlUrl = NSURL(fileURLWithPath: htmlFilePath as String)


        //Below, HTML string is written to a file:
        do  try htmlString.write(toFile: htmlFilePath as String, atomically: true, encoding: String.Encoding.utf8) 
        catch  

        //HTML file URL is fetched and displayed in UIWebView:
        webView.loadRequest(NSURLRequest(URL: htmlUrl))