Hi- We're working on a Crosswalk app, and have a question. We are planning on writing a Crosswalk extension that deals with expansion files. At a high level, this theoretical extension would have two main tasks: 1. checking to make sure any necessary OBB files were downloaded correctly, and, in our case, unzipping the OBB file somewhere 2. providing a path to where the files were unzipped.
One of the tasks we know will need to be accomplished is reading files (html, css, images, audio) from the file system, after the expansion file has been unzipped. We have investigated the File API, and it's great for what it does! We are able to successfully read in images and text and deal with them from the javascript side (adding them to the DOM, etc.) However, our ideal use case would be to be able to point Crosswalk to the unzipped expansion file (presumably mounted on /sdcard/ somewhere, we could get the path from the Java side) and have it read html files natively. i.e., we would have a /www/ folder in our expansion file, and we could direct Crosswalk to display files inside that /www/ folder (in an iframe, for example). What would be the best approach to this? We have tried various forms of file:/// URLs (we always get "Not allowed to load local resource:" errors in the Chrome logs) and app:/// URLs (we get a 403 Forbidden if we try to reach outside our app's sandbox). We are currently using Canary (9.37.192.0). Thanks for any help you can give us! -Matt Bargar
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