A 150 line html file is going to be @ 5.2kB in size, therefore 150 files will be @ 850kB.
These will easily fit inside your app in the Assets, however, such a large number of files may
cause file and compilation issues. I say may
, it could all work perfectly well
AI2 has a special url for html files in assets:
http://localhost/myfile.html
You set this in the webviewer.GoToUrl block
As an alternative, you could set up a routine to download all the files to your ASD or Shared Storage on first run of the app. The file path would then be, for example if files in the ASD:
file:///storage/emulated/0/Android/data/<packagename>/files/myfile.html
See also how I downloaded multiple files in one go using Taifun's zip extension