How to include custom Java classes in python kivy project using pyjnius

[Adrian Flores]

Hi, just like the caption says, I am trying to include some java classes that I created. I'm getting a 'java.lang.ClassNotFoundException' error when I try to instantiate the class like so:

MyService = autoclass('com.example.servicetester.MyService')

service = MyService()

My .java, .class, .jar files are in the same directory as my main.py, and

these are the lines in my buildozer.spec to include the classes in the .apk: android.add_jars_whitelist = MyService.jar, MainActivity.jar android.add_src = AndroidManifest.xml

I appreciate any tips, thanks in advance!

[Robert]

Add Java as described about 2/3 of the way down here:
https://github.com/Android-for-Python/Android-for-Python-Users#basic-pyjnius-usage

You can't specify your own manifest, only modify the automatic one with various options in buildozer.spec

You can't specify your own MainActivity, that will be the automatic PythonActivity ( Python and  main.py, and...)

You can add your own activity by using Pyjnius to start an Intent.

You can't create your own options in buildozer.spec, only the predefined ones are available.

I don't think you start a service like that, because in this context a service is a Python script

https://github.com/Android-for-Python/Android-for-Python-Users#android-service

There is some talk of adding support for native (Java) services, I'm not certain of the current implementation status.

#1 tip, don't guess, read the documentation.