Im trying to pass some base 64 string back to javascript from my webview Android App.
someBase64String is the string name

Below is working with a literal string “33333”

                            webView.evaluateJavascript("(function() { window.dispatchEvent( new CustomEvent("myEvent", { "detail": {"tmp": 33333 } })    ); })();", null);

I know I am escaping the characters wrong. any suggestions on how to pass ${someBase64String} correctly?

When I try to replace “33333” with ${someBase64String} ,nothing get’s received.

          webView.evaluateJavascript("(function() { window.dispatchEvent( new CustomEvent("myEvent", { "detail": {"tmp": ${someBase64String} } })    ); })();", null);