Swift 3 webView local HTML - ios

Question

I need to load local HTML, CSS and JS into an iOS app to make my boss happy. I'm using Xcode 8.3.1 and Swift 3. I have created a new project with a WebView placed in my Main.storyboard
Other StackOverflow resources helped me get this far:
#IBOutlet weak var webView: UIWebView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
let urlpath = Bundle.main.path(forResource: "index", ofType: "html");
let requesturl = URL(string: urlpath!)
let request = URLRequest(url: requesturl!)
webView.mainFrame.load(request)
}
I get this error:
Value of type 'UIWebView' has no member 'mainFrame'
When I remove mainFrame it says I'm missing a mimeType. Can anyone help? I'm obviously a noob to Swift.

Answer 1

mainFrame is from the class WebView which is only for macOS.
Since you are using UIWebView, you need to use webView.loadRequest.
You also have a problem with your URL. Either use URL(fileURLWithPath:) to create the URL from the path string or, better yet, use Bundle.main.url(forResource:withExtension:) and get the URL directly.
You might also want to use WKWebView instead of UIWebView. It has a lot more features and it may be more useful for your needs.

Answer 2

Swift 5
let path = Bundle.main.path(forResource: "temp", ofType: "html")!
//reading
var text = try! String.init(contentsOfFile: path, encoding: String.Encoding.utf8)
text = text.replacingOccurrences(of: "${contents}", with: contents)
// load string
let bundleURL = URL.init(string: path)
webView.loadHTMLString(text, baseURL: bundleURL)
done!