Android 10 won't read files

[Chester Wilson 5]

Just updated a Huawei P20 phone to Android 10, and am finding the things that it has now broken!

This code worked fine in android 9.  Using Delphi 10.4.

FileData=tfile.ReadAllLines('/storage/emulated/0/Documents/Pete/PeteADefaults.cfg')

now prangs with

Cannot open file "/storage/emulated/0/Documents/Pete/PeteADefaults.cfg" Permission denied.

Anyone got any bright ideas?  I tracked it through with F7 to FileOpen in System.IOUtils,

FileHandle := __open(M.AsAnsi(filename, CP_UTF8).ToPointer, (Mode and 3), FileAccessRights)

which returns -1.

(Can't read files or directories either - probably the same problem)

 

Edited June 28, 2020 by Chester Wilson
Added Delphi version and inability to write files and read directories