WKWebView does not load local html files

Question

I have a WKWebView that works perfectly fine when given a URL or a URLRequest, but when I am trying to load local bundle html files into it, it just doesn't display anything.

I am trying it like so:

let webView = WKWebView() if let bundleURL = Bundle.main.url(forResource: "index", withExtension: "html", subdirectory: "mySubDirectory/v1") { webView.loadFileURL(bundleURL, allowingReadAccessTo: bundleURL.deletingLastPathComponent()) }

I have tested that the bundleURL actually returns the right path and tried copying + pasting it in my browser at run time and it works great: file:///Users/myuser/Library/Developer/Xcode/DerivedData/FireApp-gugmufgdkejtfdhglixebzhokhfe/Build/Products/Debug-iphonesimulator/SteppingIntoFireFramwork.framework/mySubDirectory/v1/index.html

What could be the problem?

JozeRi · Accepted Answer · 2018-07-18 13:22:28Z

2

If the URL works, then it seems that your webview is having trouble loading it.

I once had this issue... Check that you don’t have only “http” & “https” enabled for the allowed URL scheme

edited Jul 18, 2018 at 13:22

answered Jul 18, 2018 at 13:02

JozeRi

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3 Comments

Erez Hod Over a year ago

OMFG, someone actually enabled http and https only for the webview to load! Thanks a lot! I would not have found it otherwise :O

Gerard Over a year ago

Where is that option? I couldn't find it.

lolololol ol Over a year ago

@Gerard I can not find it either. It used to be under Info.pList.

Hardik Thakkar · Accepted Answer · 2018-07-18 12:48:52Z

import UIKit import WebKit class ViewController: UIViewController, WKNavigationDelegate { override func viewDidLoad() { super.viewDidLoad() let webView = WKWebView() let htmlPath = Bundle.main.path(forResource: "index", ofType: "html") let htmlUrl = URL(fileURLWithPath: htmlPath!, isDirectory: false) webView.loadFileURL(htmlUrl, allowingReadAccessTo: htmlUrl) webView.navigationDelegate = self view = webView } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() } }

Full solution here

matt · Accepted Answer · 2018-07-18 12:53:30Z

Your web view is just a local temporary variable. It has zero size and is not in the interface, so you never see anything happen.

whoover · Accepted Answer · 2018-07-18 12:57:43Z

Try to remove deletingLastPathComponent() from your example. Also you can try to use load(request) instead of loadFileURL().

if let bundleURL = Bundle.main.url(forResource: "index", withExtension: "html", subdirectory: "mySubDirectory/v1") { let request = URLRequest(url: bundleURL) webView.load(request) }

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