In my Uno UWP project, I can view an html Asset file (w/ Content BuildAction), stored in my shared project, using the following:
var myAssetUri = new Uri("ms-appx-web:///Assets/Html/index.html");
myWebView.Navigate(myAssetUri);
However, this does not work with Android or WASM (not yet tried on other platforms). On WASM, I get a blank page. On Android, I get a page with the message:
The webpage at ms-appx-web:///Assets/Html/index.html could not be loaded because: net::ERR_UNKNOWN_URL_SCHEME
When I look at the package folders for both platforms, I do find my html file:
so, I am guessing I'm not doing something right ... but I don't know what that might be.
The cause is simple: WebView not implemented yet on Wasm nor Skia.