It should be possible, yes, depending on how much RAM is consumed by the OS.
This is quite a special case, you may consider getting in touch with Qt Company and getting Qt Lite from them (it's part of commercial offering) - Qt Lite makes it easier to trim down Qt so that it fits even the smallest devices.
The Open Source version can do it, too, of course (source code is exactly the same), but you'll have to sort out the gory details yourself.
@igor-z
it seems you didn't download any platform SDK.
This needs to be done in the SDK Manager. Open Android Studio and open up the SDK Manager and download a recent platform SDK.
Please show the output of the commands
file /media/saman/62ca0b6d-6291-4c40-b1fd-11bc291e4a38/usr/lib/libjsoncpp.so
ldd /media/saman/62ca0b6d-6291-4c40-b1fd-11bc291e4a38/usr/lib/libjsoncpp.so
Any reason you don't use Qt's built-in JSON support?
If you want fancy animations QtQuick
Yes
Take a look at Exporting Designs from Graphics Software
Create a dedicated class for that in C++ that you will then make available to your QML code.
Depends on what you need: Cutelyst, Django, Flask, PHP Slim, NodeJS etc.
@mrtglr33 you should deploy your application to Rpi, along with having Qt libraries already deployed on it. More about deploying QML applications here and an excellent step by step guide about specifics of Qt5/QML on Raspberry Pi that may be of your interest.
Hi,
for an easy native-styled Android menu (QML-based though), you can also have a look at V-Play Engine, which extends Qt and handles native features and styling for Android and iOS.