Running python script on Android but in Docker container

[bobmorane83]

Hi all,

I'am trying to run python script on Android but in Docker container.
So far, I've Docker running OK on my Android 12 board (aarch64).
Running python is ok in container, but I want to access Android framework now.

I've created a container based on openjdk:11, adding Python 3.9, recompiling pyjnius and having this simple code in it:

from jnius import autoclass

DisplayMetrics = autoclass('android.util.DisplayMetrics')
metrics = DisplayMetrics()
print('DPI', metrics.getDeviceDensity())

When I run the container I get the error :

Traceback (most recent call last):
  File "/myapp/app2.py", line 2, in <module>
    DisplayMetrics = autoclass('android.util.DisplayMetrics')
  File "/usr/local/lib/python3.9/dist-packages/pyjnius-1.6.1-py3.9-linux-aarch64.egg/jnius/reflect.py", line 209, in autoclass
    c = find_javaclass(clsname)
  File "jnius/jnius_export_func.pxi", line 22, in jnius.find_javaclass
  File "jnius/jnius_utils.pxi", line 79, in jnius.check_exception
jnius.JavaException: JVM exception occurred: android/util/DisplayMetrics java.lang.NoClassDefFoundError

I have tested also to change JAVA_HOME with Dalvikvm (adding -v /bin:/bin to the docker command)

JAVA_HOME=/bin/dalvikvm

But I got the same error.

BTW, I'am totally new to pyjnius and how this all works. I even don't know if it's possible to do what I want to do !
Any clues/help ?

Thx,
V.

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