How to Invoke JavaScript from Xamarin.Forms app without using Uno.UI?

Question

I have a Xamarin.Forms app and it projected to WASM via Uno Platform . I need open a web link after click or tap. I solve it with:

 try // Uwp & iOS & Android
            {
                await Browser.OpenAsync(new Uri("http://localhost"), BrowserLaunchMode.SystemPreferred); // Open url in-app browser for iOS & Android- native in UWP
            }
            catch (NotImplementedInReferenceAssemblyException ex) //Wasm falls here because lack of Xamarin.Essentials.
            {
                await DisplayAlert("Hata", "Not supported on WASM", "Anladım"); // Show the info about exception.



            }

for Xamarin. Android & iOS and UWP(Windows). However, the Xamarin.Essentials cannot run on WASM yet. So I need to invoke the Javascript and run this code:

function openPage(x) {
    window.open(x);
}

I try to use UNO.Foundation for

WebAssemblyRuntime.InvokeJS("(function(){location.href=\"https://www.wikipedia.com/\";})();");

However, it interfere with the UWP UI classes and brokes my project. How can I invoke Javascript from Xamarin.Forms page C# backend without using UNO.Foundation class ? Thanks.

Muhammad Abu Mandor · Accepted Answer · 2020-02-13 23:41:59Z

1

You can use hybrid webview then inject JavaScript code to detect every click on this web view https://learn.microsoft.com/en-us/xamarin/xamarin-forms/app-fundamentals/custom-renderer/hybridwebview

answered Feb 13, 2020 at 23:41

Muhammad Abu Mandor

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