On 26/12/2018 20:19, Uwe Deutscher wrote:
No, definitly not!
I have a Sony Xperia Z5 Premium under Android 7.2 and the latest version of K-9.
The problem started immediately with my migration from HTC Sensation under
Android 4.x to this smartphone.
K-9 refuses to write to the external SD although all necessary rights have been
granted.
DISCLAIMER: I'm not a k-9 dev. I'm not even a Java dev.
https://github.com/k9mail/k-9/blob/master/app/core/src/main/java/com/fsck/k9/mailstore/StorageManager.java#L380
"Environment.getExternalStorageDirectory();"
https://developer.android.com/reference/android/os/Environment#getExternalStorageDirectory()
"Note: don't be confused by the word "external" here. This directory can
better be thought as media/shared storage. It is a filesystem that can
hold a relatively large amount of data and that is shared across all
applications (does not enforce permissions). Traditionally this is an SD
card, but it may also be implemented as built-in storage in a device
that is distinct from the protected internal storage and can be mounted
as a filesystem on a computer.
On devices with multiple users (as described by UserManager), each user
has their own isolated shared storage. Applications only have access to
the shared storage for the user they're running as."
Multiple user profiles were introduced in 4.2 .. which I presume
coincides with the recommendation to use getExternalStorageDirectory()
So it seems to me (see the disclaimer above) that K-9 is "doing the
right thing" here as per Android's own developer guidelines. Maybe it's
time to remove the references to external SD cards from the UI.
sjb
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