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#1
ePub Reader / Re: Books not found with scan
Last post by LDad - June 04, 2023, 11:20:34 PMThank you!
The solution with this version of Android is a modification of your obb fix.
The folder exists within the "master" profile on the device, however it is invisible to the "child" profile.
Loading the books from the PC into the main obb folder works however there is a blockage in the permissions within the Fire OS to prevent the "child" profile from accessing USB connection control, so the only way to create the folder for that user is within the eLibrary software, within the Android file structure, but it snaps right into shape at that point.
Thanks much!
The solution with this version of Android is a modification of your obb fix.
The folder exists within the "master" profile on the device, however it is invisible to the "child" profile.
Loading the books from the PC into the main obb folder works however there is a blockage in the permissions within the Fire OS to prevent the "child" profile from accessing USB connection control, so the only way to create the folder for that user is within the eLibrary software, within the Android file structure, but it snaps right into shape at that point.
Thanks much!
#2
ePub Reader / Re: Books not found with scan
Last post by kweckwor - June 03, 2023, 07:22:44 PMOK, I've done some exploring with multiple profiles and here's what I can make out:
On Android 9 (and presumably lower) there is a trick that works for me to share a single set of book files across profiles, thus avoiding the need to have duplicate copies of those files for each profile. It seems to be a hole in the profile sandbox implementation that Google left open up to Android 9, but appears to have been closed after that (in Android 10 the trick does not work for me). Whether the trick works for FireOS 7 or not I don't know, but since it is based on Android 9 it might. So I'll describe it here in case you want to try it:
The obb folder seems to be the mechanism that older Android versions used for sharing files across profiles. Google appears to have disabled that (probably only for non-system app is my guess) as of Android 10, but it might still work prior to that.
Hopefully some of that information might help.
Karl
- Most of my exploration was done in Android emulators, so it may not match exactly what you will experience in FireOS. FireOS 7.3.2.7 is supposed to be based on Android 9, however, so I suspect that the behaviour I see in the Android 9 emulator should match what you will see.
- Each profile has it's own "sandbox" area in primary storage that it has access to. In this way, each profile is isolated from others so that any customization (most anyway - there are some exceptions which I won't get into here) are unique to that profile and don't impact any other. That isolation includes all files visible to the profile, not just files private to individual apps.
- As I alluded to in my last post, secondary profiles don't have access to the SD card. This might be controlled by device manufacturers though, so may not be universally true. In the emulators (and in the physical devices I've tried), I had no access to SD card data from non-system applications in anything other than the primary profile.
- All of the above means that a secondary profile won't have access to book files that are stored in the primary profile "sandbox". In order to make book files visible to secondary profiles, you'll need to copy those files to the secondary profile sandbox.
- When you connect your device to a PC via USB, the PC exposes the primary storage area as a drive for the active user profile (and only one profile can be active at a time). So to load books into the secondary profile sandbox, you should switch to that profile (making it active) and then connect. The drive exposed on your PC will be the sandbox for that profile. If you copy book files there, they should be visible to the secondary profile on your device. Of course that means you need to have multiple copies of books files on your device, one for each profile, which means you'll eat up more storage.
On Android 9 (and presumably lower) there is a trick that works for me to share a single set of book files across profiles, thus avoiding the need to have duplicate copies of those files for each profile. It seems to be a hole in the profile sandbox implementation that Google left open up to Android 9, but appears to have been closed after that (in Android 10 the trick does not work for me). Whether the trick works for FireOS 7 or not I don't know, but since it is based on Android 9 it might. So I'll describe it here in case you want to try it:
- With the primary profile active, navigate to folder /Android/obb. If the folder does not exist, create it. You should be able to do this through the PC while connected through USB or on the device using a file manager app.
- Copy book files into this folder. You can create sub-folders to organize the files if you want.
- Switch to the secondary profile. In the secondary profile you probably won't see the same /Android/obb folder automatically (I didn't anyway), but you can create one. Once created, the folder seems to get linked to the same shared folder used by the primary profile so any book files you copied there while that profile was active should "magically" appear in the new /Android/obb folder you just created in the secondary profile.
- You should be able to scan that folder in my app now (after adding an appropriate root folder of course).
The obb folder seems to be the mechanism that older Android versions used for sharing files across profiles. Google appears to have disabled that (probably only for non-system app is my guess) as of Android 10, but it might still work prior to that.
Hopefully some of that information might help.
Karl
#3
ePub Reader / Re: Books not found with scan
Last post by LDad - June 02, 2023, 06:46:01 PMThanks!
In our case, no, not using an SD card, just the internal storage with roughly 500 books.
On the main profile I've had very few issues, and no trouble with the inventory showing up on a search, it's jus the kid profile that can't view the material. No issues opening the app, just viewing the books.
In our case, no, not using an SD card, just the internal storage with roughly 500 books.
On the main profile I've had very few issues, and no trouble with the inventory showing up on a search, it's jus the kid profile that can't view the material. No issues opening the app, just viewing the books.
#4
ePub Reader / Re: Books not found with scan
Last post by kweckwor - June 02, 2023, 04:33:24 PMIt's been a little while since I've tried using multiple profiles in Android, but from what I remember, I was only able to see the device SD card from the primary profile and not from any secondary profiles. That seemed (at the time at least) to be intentional behaviour in Android (for reasons that I didn't really understand - it doesn't make much sense to me to restrict the device that way).
I don't know if that is related to what you are seeing or not. If you're not using an SD card for book files then it wouldn't be. But I thought I'd mention it.
I'll try setting up profiles and see if I can get anything to break. I'll post back when I've had a chance to test it out.
Karl
I don't know if that is related to what you are seeing or not. If you're not using an SD card for book files then it wouldn't be. But I thought I'd mention it.
I'll try setting up profiles and see if I can get anything to break. I'll post back when I've had a chance to test it out.
Karl
#5
ePub Reader / Re: Books not found with scan ...
Last post by LDad - June 02, 2023, 01:31:35 PMI'd like to add a note on this thread, since I assume it's related.
I can find the books I've loaded on my profile, however I have the application on my kid's, and it refuses to see any books.
I've tried the following solutions myself:
I have tried to export (not successful, but I figure that's supposed to be for an additional devise anyhow)
I've tried to add a sub-folder (unsuccessful through the PC, the App can see it, but it doesn't find the books within it)
I added a root folder in app (unsuccessful, and the PC can't see the folder to include material).
I had run this app successfully on a child profile on an older Fire, and it was great because I could isolate the internet and my kid would be reading books rather than webbing and gaming and all over the place. I'd really like to be able to continue to do that!
my elibrary build is 5.0.1/162/54
my Fire is an 8th gen running 7.3.2.7
Thank you!
I can find the books I've loaded on my profile, however I have the application on my kid's, and it refuses to see any books.
I've tried the following solutions myself:
I have tried to export (not successful, but I figure that's supposed to be for an additional devise anyhow)
I've tried to add a sub-folder (unsuccessful through the PC, the App can see it, but it doesn't find the books within it)
I added a root folder in app (unsuccessful, and the PC can't see the folder to include material).
I had run this app successfully on a child profile on an older Fire, and it was great because I could isolate the internet and my kid would be reading books rather than webbing and gaming and all over the place. I'd really like to be able to continue to do that!
my elibrary build is 5.0.1/162/54
my Fire is an 8th gen running 7.3.2.7
Thank you!
#6
eLibrary Manager / Re: VERSION 4.5.2 (2023-02-05)...
Last post by kweckwor - February 28, 2023, 12:52:45 AMVersion 4.5.4 is now live on the Amazon App Store.
For anyone who has been out of commission over the last couple of weeks, I apologize. You should be able to update to get the fix now.
Karl
For anyone who has been out of commission over the last couple of weeks, I apologize. You should be able to update to get the fix now.
Karl
#7
eLibrary Manager / Re: VERSION 4.5.2 (2023-02-05)...
Last post by kweckwor - February 26, 2023, 02:32:45 PMAn update on this issue:
I've gotten my hands on a Fire (5th gen) with FireOS 5.7.0.0 and have been able to figure out what the issue is with version 4.5.2 of my app. Version 4.5.4 does in fact fix the issue (as confirmed above).
The issue should only happen if you have a Fire device on FireOS 5.x with a recent version of WebView (i.e. 100). If your Fire has FireOS 5.x with older WebView (i.e. version 59), or if your FireOS version is anything other than 5.x (either older or newer), then you should not have a problem with version 4.5.2. If you are experiencing the issue though, you will need version 4.5.4 of my app (or any version other than 4.5.2 - the issue is specific to that one).
Unfortunately, Amazon is still dragging its feet clearing up my Amazon App Store submission status for both Full and Basic versions of my app, so as of this morning, I am still unable to post the fix to that app store. I will let you know when I finally release 4.5.4 with the fix.
If you have access to other app stores like Google Play, or if you are OK with side-loading, I've posted details about those options above.
Sorry for how long this is dragging out, but I'm not sure what else I can do other than communicate with Amazon through public forums to try and get some focus on the issue - which I have been doing but with as of yet limited success.
I've gotten my hands on a Fire (5th gen) with FireOS 5.7.0.0 and have been able to figure out what the issue is with version 4.5.2 of my app. Version 4.5.4 does in fact fix the issue (as confirmed above).
The issue should only happen if you have a Fire device on FireOS 5.x with a recent version of WebView (i.e. 100). If your Fire has FireOS 5.x with older WebView (i.e. version 59), or if your FireOS version is anything other than 5.x (either older or newer), then you should not have a problem with version 4.5.2. If you are experiencing the issue though, you will need version 4.5.4 of my app (or any version other than 4.5.2 - the issue is specific to that one).
Unfortunately, Amazon is still dragging its feet clearing up my Amazon App Store submission status for both Full and Basic versions of my app, so as of this morning, I am still unable to post the fix to that app store. I will let you know when I finally release 4.5.4 with the fix.
If you have access to other app stores like Google Play, or if you are OK with side-loading, I've posted details about those options above.
Sorry for how long this is dragging out, but I'm not sure what else I can do other than communicate with Amazon through public forums to try and get some focus on the issue - which I have been doing but with as of yet limited success.
#8
eLibrary Manager / Re: VERSION 4.5.2 (2023-02-05)...
Last post by kweckwor - February 21, 2023, 10:54:04 PMThanks for letting me know!
I've got a Fire (with FireOS 5.7.0.0) on order from eBay that should be coming soon. With that I hope to be able to figure out what happened with the previous version and hopefully find a workaround for it.
I'm happy the update fixed the problem in any case.
I've got a Fire (with FireOS 5.7.0.0) on order from eBay that should be coming soon. With that I hope to be able to figure out what happened with the previous version and hopefully find a workaround for it.
I'm happy the update fixed the problem in any case.
#9
eLibrary Manager / Re: VERSION 4.5.2 (2023-02-05)...
Last post by ogm - February 21, 2023, 02:03:21 PMJust installed the version 4.5.4 on my Kindle and it works just fine now.
Thank you for the quick turnaround.
Thank you for the quick turnaround.
#10
eLibrary Manager / Re: VERSION 4.5.2 (2023-02-05)...
Last post by kweckwor - February 20, 2023, 01:45:26 PMUnfortunately, Amazon is being ominously quiet on the tickets I've opened to clear up my eLibrary Manager and eLibrary Manager Basic Amazon App Store status so I can release my update. Again, I'll do that as soon as I can.
In the mean time, I've released version 4.5.4 on all other app stores (including Google Play). So if anyone is having issues with the last update on your Fire tablet and you have access to Google Play, you can get the update through that channel.
If you are using eLibrary Manager Basic and you are comfortable with sideloading, you can also get the .APK file at
You can find a link for 4.5.4 towards the bottom of the page.
Hopefully Amazon will enable release of the update soon and I'll get it out on the Amazon App store as well. I will post here when that happens.
In the mean time, I've released version 4.5.4 on all other app stores (including Google Play). So if anyone is having issues with the last update on your Fire tablet and you have access to Google Play, you can get the update through that channel.
If you are using eLibrary Manager Basic and you are comfortable with sideloading, you can also get the .APK file at
You can find a link for 4.5.4 towards the bottom of the page.
Hopefully Amazon will enable release of the update soon and I'll get it out on the Amazon App store as well. I will post here when that happens.