I need to show my webview content over parent background pattern. Is there a straightforward way to do it?
You need to set the Web Page Background to 0. But you might need to do some other stuff to not make it break on scrolling. The following GitHub Gist is a java agent that can be added to our app and that manipulates WebPages to be transparent. https://gist.github.com/riccardobl/18603f9de508b1ab6c9e or more up to date version https://github.com/FAForever/downlords-faf-client/blob/develop/webview-patch/src/main/java/com/faforever/client/webviewpatcher/TransparentWebViewPatch.java
Only solution that I found and was fully working.