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Quoth · 01-24-2021, 09:04 AM

There is a terrible flaw due to the stupidity of Android:
So far most other Apps from my Google Account Android Playstore Library installed and work:
Kobo ereader, Kindle ereader, BorrowBox Library/ereader/audioplayer. Jota text editor works with the BT or soft keyboard. No Playstore apps can see the SD card, nor can KOReader. The presupplied Boyue ereader/PDF reader and Music do work.

Access to the SD card used as portable storage varies with version of Android and how an app is written. Later Android versions allow treating the SD card as internal storage* but this encrypts it and the Boyue may not have exFat Formatting. I don't recommend it on ANY Android device above 32 G SD Card and where you want direct use of the SD card outside of Android.
[* It seems like a DRM or security issue because in reality the SD card is mounted in a subdirectory of Internal Storage, but this is hidden from the user]

So, so far only the pre-installed apps work with the SD Card. KOReader can't even find the sample books on the internal storage. It could only open text files I'd created on Internal Storage with Jota. Which can't use the SD card, though it can on my phone.

Some Playstore apps are only going to see the SD card if configured via notification on insert as part of internal storage. This reformats it and makes it inaccessible to anything else if physically removed. I'd not trust Android 8.x or Linux Mint 18.x to actually format a 64 G, 128 G or 256 G card, which will all be using exFat. A 32 G card should be OK.

Naturally Google Playbooks option to used SD card is greyed out, because it's portable storage. Also the audiobooks, ebooks and comics of Playbooks are only accessible in Playbooks and Playbooks vanishes while Google Framework is disabled.

I'm slightly regretting buying the Likebook Mars, but the flaws are really all Google's fault of stupid tinkering with Android features on every release instead of actually finishing a complete version that worked sensibly ever.

The Search doesn't find books till the underlying process has finished cataloging them, or whatever.

I don't like the font rendering on the inbuilt ereader. The characters are a little loose at minimum spacing. On every new book opened you have to set Text Contrast to minimum (it artificially bolds the face), set font spacing to minimum, set paragraph spacing to minimum as it's ignoring paragraph top and bottom margins in the CSS.

So I was disappointed that KOReader can't find any ebooks or the SD card at all.

The built in PDF reader works well with autocrop on image PDFs, and that is the main reason to have an SD card.

I might try it with 32 G SD card formatted as so called internal storage and then only use MTP. I won't be adding many books at once. I'll not bother with using much for music or audio books.

01-24-2021, 09:04 AM	#16
Quoth Still reading Posts: 14,431 Karma: 107078855 Join Date: Jun 2017 Location: Ireland Device: All 4 Kinds: epub eink, Kindle, android eink, NxtPaper	There is a terrible flaw due to the stupidity of Android: So far most other Apps from my Google Account Android Playstore Library installed and work: Kobo ereader, Kindle ereader, BorrowBox Library/ereader/audioplayer. Jota text editor works with the BT or soft keyboard. No Playstore apps can see the SD card, nor can KOReader. The presupplied Boyue ereader/PDF reader and Music do work. Access to the SD card used as portable storage varies with version of Android and how an app is written. Later Android versions allow treating the SD card as internal storage* but this encrypts it and the Boyue may not have exFat Formatting. I don't recommend it on ANY Android device above 32 G SD Card and where you want direct use of the SD card outside of Android. [* It seems like a DRM or security issue because in reality the SD card is mounted in a subdirectory of Internal Storage, but this is hidden from the user] So, so far only the pre-installed apps work with the SD Card. KOReader can't even find the sample books on the internal storage. It could only open text files I'd created on Internal Storage with Jota. Which can't use the SD card, though it can on my phone. Some Playstore apps are only going to see the SD card if configured via notification on insert as part of internal storage. This reformats it and makes it inaccessible to anything else if physically removed. I'd not trust Android 8.x or Linux Mint 18.x to actually format a 64 G, 128 G or 256 G card, which will all be using exFat. A 32 G card should be OK. Naturally Google Playbooks option to used SD card is greyed out, because it's portable storage. Also the audiobooks, ebooks and comics of Playbooks are only accessible in Playbooks and Playbooks vanishes while Google Framework is disabled. I'm slightly regretting buying the Likebook Mars, but the flaws are really all Google's fault of stupid tinkering with Android features on every release instead of actually finishing a complete version that worked sensibly ever. The Search doesn't find books till the underlying process has finished cataloging them, or whatever. I don't like the font rendering on the inbuilt ereader. The characters are a little loose at minimum spacing. On every new book opened you have to set Text Contrast to minimum (it artificially bolds the face), set font spacing to minimum, set paragraph spacing to minimum as it's ignoring paragraph top and bottom margins in the CSS. So I was disappointed that KOReader can't find any ebooks or the SD card at all. The built in PDF reader works well with autocrop on image PDFs, and that is the main reason to have an SD card. I might try it with 32 G SD card formatted as so called internal storage and then only use MTP. I won't be adding many books at once. I'll not bother with using much for music or audio books.