[Android] CC won't recognize default book folder on Kindle Fire 8

[flglavin]

This is an annoyance, but can be worked around. The problem is this:
I set up Calibre by starting content server and start wireless device connection.
On my Kindle Fire 8 I make sure Wi-Fi is enabled then open CC and click on "connect". I get an error message saying that the default book folder is read- only and CC cannot use it to import books into. So then I have to reset the default folder into which I import books. (This is done through the CC program)
but the odd thing is that I reset the default folder to the same one that CC has refused, and after resetting it, the program works fine. The folder I use is the one that Kindle Fire uses as a default (/storage/emulated/0/Books). Has anyone else had this problem? If so, I am saying that this is a workable solution, but it would be nice if someone else has a better one. Thanks.

[chaley]

If I understand you correctly, you are saying that if you select the same folder using CC's Settings then it works from then on. If this is correct then I think you are "victim" of the consequences of certain CC manipulations.

When you initially install (Amazon) CC, it sets itself up to access the "Books" folder using the native file system commands. This works on Android 4 up. However, if later you change the default folder to something else and if you are running Android 5 or later then CC uses the (horrible) Android Storage Access Framework to read/write the folders. The permissions that CC gets in that process will often not survive a device change or an OS (Android) upgrade. Thus, if in the past you:

1. changed CC's book folder to something
2. changes CC's book folder to the default
3. upgraded Android or changed devices

then you must use CC's Settings / Formats and folders to reacquire permissions to the folder in question.

[flglavin]

Actually, I have to go through the same procedure every time I restart CC and try to connect to my Kindle Fire 8. I did change my default storage folder to one on my microSD card, but then changed it back to the Books folder the first time I got the error message. Yes, from then on CC used the Android Storage Access. After receiving your message about the problem, it seemed logical to me that uninstalling CC and reinstalling it might solve the problem. It seems to have done so. Since I purchased the app, Amazon does not charge me again for re-downloading it.Thank you for your helpful explanation.

Originally Posted by chaley

If I understand you correctly, you are saying that if you select the same folder using CC's Settings then it works from then on. If this is correct then I think you are "victim" of the consequences of certain CC manipulations.

When you initially install (Amazon) CC, it sets itself up to access the "Books" folder using the native file system commands. This works on Android 4 up. However, if later you change the default folder to something else and if you are running Android 5 or later then CC uses the (horrible) Android Storage Access Framework to read/write the folders. The permissions that CC gets in that process will often not survive a device change or an OS (Android) upgrade. Thus, if in the past you:

1. changed CC's book folder to something
2. changes CC's book folder to the default
3. upgraded Android or changed devices

then you must use CC's Settings / Formats and folders to reacquire permissions to the folder in question.