I work on a medical training simulator that bundles a lot of PDF based documentation. The idea is to make this documentation persistent to the user outside of the trainer. The Play Store now requires APKs to target API-29 or greater and the permission changes starting in API-29 are giving my team a little trouble.
My Question is.
What is the proper way to write to the external sdcard in Android?
My current approach is to embed the file contents as c_strings in a native library and write them to disk on request. Iām not sure if its possible to just bundle the files directly in to the APK in unreal and have them extract on installation.
I am currently adding to the project settings the following permissions
android.permission.WRITE_EXTERNAL_STORAGE
android.permission.READ_EXTERNAL_STORAGE
android.permission.MANAGE_EXTERNAL_STORAGE /*API 30*/
I think verify these permissions at runtime and request them if they are missing. Permission Manager shows WRITE/READ are granted but on Manage is denied.
The HAL implementation of File Write fails and I tried hand rolling ostream implementations and they execute but result in no file IO.
I find myself rereading the scoped permissions page in the android developer documentation, but have been out of mobile development to long to really understand what I need to do. Does anyone have insight on the right way to just create Hello_World.txt on the sdcard in android?