If you want to create an APK app from your program and your program uses data files (text, images, audio, whatever), then you must put all of your data files into a single folder under Mintoris.Basic/Data. You may create sub-folders under this single folder.
So if your program was called Fun.bas, you would create a folder Mintoris.Basic/Data/FunFiles. Then all of your data files would go into the FunFiles folder.
From within your program you would use a path like:
Open 1, "FunFiles/Settings.dat", "r"
When you go to Export APK Project, select FunFiles from the list of data folders and that folder will be zipped up into your apk file. Then the first time you run your new app, it will create/unzip FunFiles and all of its contents into your data folder.