In my web app, I'm looking to allow users to select 'folders' from their filesystem which will then be stored and scanned to build a library of media files. But I'm having trouble designing an intuitive interface for selecting folders.
My initial thought was to have an iOS-like drill-down list that would allow the user to navigate their file-system, and select the folder when they find it. But in this case, I need to disambiguate between opening the folder and selecting the folder. I can't find an intuitive way of doing this. I've considered having checkboxes next to each folder... or having a 'select' button next to each... or requiring a double-click to open the folder... but these don't seem ideal.
Any suggestions for this? I'd like it to be touch/mobile friendly.