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 LK8000 International Support
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 Android studio __arm__ setting
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aleit
Pulcino

Italy
26 Posts

Posted - 23/07/2020 :  10:08:03  Show Profile  Reply with Quote
I successfully setup android studio to compile a debug lk8000 apk.

My problem is that that the conditional:
#ifdef __arm__

is always false when I run the apk in the target device (I'm working on color e-ink support).

So, all the code that depends on that conditional is not executed. What should I do to compile it properly? Unfortunately I am not familiar with C++ and android studio.

brunotl
Pterodattilo

France
746 Posts

Posted - 23/07/2020 :  20:23:22  Show Profile  Reply with Quote
what is the target device abi ?
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aleit
Pulcino

Italy
26 Posts

Posted - 23/07/2020 :  20:44:44  Show Profile  Reply with Quote
I don't know, I did not set it because I don't know what it is and how to set it.
I just exported the code from github, import it in android studio and then do Build -> Make Project from the menu.
I copied the generated file android-studio/app/build/outputs/apk/debug/LK8000-7.1p-debug.apk from the computer to the device and installed it, where it works except that #ifdef __arm__ parts are not taken into account.
The device where I test the apk is an HiSense A5 Pro CC.
By the way, I can't run LK8000 in the emulator because after it starts I just see a black screen (even tough sound and mouse clicks seem to work), I don't know if this is related.


Edited by - aleit on 23/07/2020 20:48:29
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aleit
Pulcino

Italy
26 Posts

Posted - 24/07/2020 :  12:11:59  Show Profile  Reply with Quote
I tried to set the abi:
menu Build -> Select Build Variant
then I set "Active ABI" to armeabi-v7a, rebuild everything, but didn't work: still __arm__ not defined.
Same thing for arm64-v8a.

I even tried doing:
menu Build -> Edit Build Types -> Variables -> :app -> new variable
set __arm__ to value "y"
with no luck :-(
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brunotl
Pterodattilo

France
746 Posts

Posted - 25/07/2020 :  17:05:23  Show Profile  Reply with Quote
abi depends of target device only, so for arm64 device "__arm__" is not defined, instead "__aarch64__" is defined ...
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aleit
Pulcino

Italy
26 Posts

Posted - 25/07/2020 :  23:57:33  Show Profile  Reply with Quote
thank you, this is exactly what I needed to know!
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aleit
Pulcino

Italy
26 Posts

Posted - 26/07/2020 :  08:29:46  Show Profile  Reply with Quote
Could you give me a hint on the correct way to compile for android with DITHER and GREYSCALE defined?
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brunotl
Pterodattilo

France
746 Posts

Posted - 26/07/2020 :  15:22:49  Show Profile  Reply with Quote
"DITHER" and "GREYSCALE" can't be defined for OpenGL Target and Android is OpenGl target.
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