Apr 10 2020 12:41 PM - edited Aug 18 2020 01:38 AM
Class Materials is a good idea but not too well implemented. The problems are:
Actually in an Educational setting, one usually wants all files in the files sections of the various channels to be Read Only - or am I wrong? If you want any learner to submit an edited version of a document, you will usually request it via an assignment submission. At least that is my take on it.
So here is another way in which you can make your files read only in the various channels right now and accessible on all platforms - Android included (actually it is alluded to here, but they make it sound much more complicated than what it is):
It may sound like a long process, but once you've done it once or twice, it is so simple you'll be able to do it in your sleep. Forget about Class Materials!
P.s. If you only want sub-folders of your channel folders to be Read Only (and not the whole folder), I'm sure you can work that out ;)