Crashing in WKWebview Often, when the video is loaded in the webview using an HTML file

Question

Ramakrishnantag OP

Created 2w

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Hello, Team.

We used WKWebView for our project. We loaded the HTML file into the webview and added the following configuration.

weak var webView: WKWebView!

func configWebView() {

    let webViewConfig = WKWebViewConfiguration()
    
    let controller = WKUserContentController()
    controller.add(self, name: "sometest")
    webViewConfig.userContentController = controller
    
    webViewConfig.processPool = WKProcessPool()
            
    webViewConfig.setValue(true, forKey: "allowUniversalAccessFromFileURLs")
    webViewConfig.mediaTypesRequiringUserActionForPlayback = []
     
    let webpagePreferences = WKWebpagePreferences()
    webpagePreferences.allowsContentJavaScript = true
    webViewConfig.defaultWebpagePreferences = webpagePreferences
    webViewConfig.websiteDataStore = WKWebsiteDataStore.default()
    webView = WKWebView(frame: .zero, configuration: webViewConfig)
    webView.navigationDelegate = self
    webView.uiDelegate = self
    webView.translatesAutoresizingMaskIntoConstraints = false
    view.addSubview(webView)
           
    NSLayoutConstraint.activate([
        webView.topAnchor.constraint(equalTo: view.topAnchor),
        webView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
        webView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
        webView.trailingAnchor.constraint(equalTo: view.trailingAnchor)
    ])
    loadWebView()

}

func loadWebView() {

guard let documentsDirectoryURL = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first else {
        return
    }
    
    let contentFolderURL = documentsDirectoryURL.appendingPathComponent("content")
    
    let assetFolderURL = contentFolderURL.appendingPathComponent(interactiveGUID)
    if FileManager.default.fileExists(atPath: assetFolderURL.path) {
        let documentsPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).first!
        let documentsURL = URL(fileURLWithPath: documentsPath)
        
        let fileToLoadPath = (documentsPath as NSString).appendingPathComponent("content/index_p.html")
        let fileURL = URL(fileURLWithPath: fileToLoadPath)
        
        autoreleasepool {
            DispatchQueue.main.async { [weak self] in
                guard let self = self else { return }
                self.webView.loadFileURL(fileURL, allowingReadAccessTo: documentsURL)
            }
        }

}

We are experiencing webview crashes when loading an HTML file. What happened when I loaded the video file? It automatically looped. Webview frequently crashes when the HTM/JS file is loaded.

When a webview crashes, the delegate method usually calls webViewWebContentProcessDidTerminate. This method calls webview.reload().

Also we are clear and cache/ deallocate eveything when i initialized those configuration mentioned as the above.

Can you suggest a solution to this? Why is webview crashing?

Thank you.

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