Automating the Webview using Selenium Vbasic


I am new to this forum. hopefully i am raising my question on the correct forum. please direct if i am not.

i am using Appium on windows.
using Selenium VB wrapper -
and currently automating an android app (hybrid)

The problem i face is with the automating the webview.
I think when using appium with selenium vb the context switch is not supported. Is there another way to go around it?
Also - is it possible for the script to access the Android Assets folder and fetch a specfic html?