Android File Read to array problems

A frustrating afternoon.....

What I want to do is read an array file (created in a windows Fusion app) in an Android app. I create an array using a listview under win:(dows - this will be loaded into the android app for display....
So I add the file to my app using 'data elements' - binary file.

Then it all goes a bit awry - I cannot read the file (using array-read from file) or file-is file readable. I've tried numerous combinations of file name including the path (or not) DataStorageDirectory("Android object") and various access permissions (read_external_storage etc) (though shouldn't be needed for application data)
So I tried D:\File.name, D:/File.name, File.name, /File.name DataStorageDirectory("android object") + previous etc)

I also try to read a simple data file ("test.txt") and no joy - in case an array can only be read by the application that created it (I read in one pdf)

So please, somebody take pity and put me out of my misery. A simple example of how to read a binary file created on my main PC would be very welcome.

Many thanks

Martin

PS - has anyone managed to register a Steam purchased product using the website?

Bit more testing - the file is there. The array load from file isn't working. The array is created in a Windows app - and contains a table of data to be used in the android app (~71 x 3 x 1 grid). It is created using an ListView and then save as array object.
Adding array to the windows app and attempting to load this file crashes (edrt.exe has stopped working) - though it reload perfectly into a ListView.

Suggestions - I may (have to) just change and save as a text (csv) or ini file

Yes - it should be easy - but when I try that I get 'Accessing Steam' then it fails with 'Profile Not Found'.

I got an error when I tried emailing ClickTeam using the address on Steam (mailbox refusing messages) and the web contact form also failed. Will try ringing them when I get a day at home..

Solved.. I copied the ListView data to an array in the Windows app. Saved the array data to a file (rather than using the ListView save to array file). Works beautifully - may try again with the direct from ListView save - but as it's quick and easy to copy the data - it's a reasonable work around.