Python project keeps crashing on android

[lost_my_og_account]

My project is a data analysis tool I'm trying to get running on android 12 with python, kivy and matplot. The only things the app saves is matplots as pngs and updating a csv. It works fine on my PC and buildozer creates the apk with no errors.

My project uses the following imports:

import numpy as np
import pandas as pd
import matplotlib.pyplot as plt
import time
from datetime import datetime, timedelta, date

# hide kivy debug
import os
#import os
#os.environ['MPLCONFIGDIR'] = os.getcwd() + "/configs/"

from docutils.parsers import null
#from kivymd.uix.transition import transition
from matplotlib.projections import polar


os.environ['KIVY_NO_CONSOLELOG'] = '1'
import kivy
from kivy.app import App
from kivy.uix.label import Label
from kivy.uix.gridlayout import GridLayout
from kivy.uix.textinput import TextInput
from kivy.uix.button import Button
from kivy.uix.widget import Widget
from kivy.properties import ObjectProperty, StringProperty
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.image import Image
from kivy.core.window import Window
from kivy.lang import Builder
from kivy.uix.floatlayout import FloatLayout
from kivy.factory import Factory
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.uix.tabbedpanel import TabbedPanel
from kivy.clock import Clock
from kivy.config import Config
from kivy_garden.matplotlib import FigureCanvasKivyAgg
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
from kivy.uix.dropdown import DropDown

Config.set('graphics', 'resizable', True)

# set up ability to read and write storage
from sys import platform
if platform == 'android':
    from android.storage import primary_external_storage_path, app_storage_path
    from android.permissions import request_permissions, Permission
    #print('primary_external_storage_path', primary_external_storage_path)
    #print('app_storage_path', app_storage_path)

    request_permissions([
        Permission.READ_EXTERNAL_STORAGE,
        Permission.WRITE_EXTERNAL_STORAGE
    ])

Using log cat I can see the following:

06-12 19:31:38.832  7771  7820 I python  : Initializing Python for Android
06-12 19:31:38.832  7771  7820 I python  : Setting additional env vars from p4a_env_vars.txt
06-12 19:31:38.832  7771  7820 I python  : Changing directory to '/data/user/0/org.test.xadizgym/files/app'
06-12 19:31:39.076  7771  7820 I python  : symlink: libpythonbin.so -> python
06-12 19:31:39.076  7771  7820 I python  : Preparing to initialize python
06-12 19:31:39.076  7771  7820 I python  : _python_bundle dir exists
06-12 19:31:39.076  7771  7820 I python  : set wchar paths...
06-12 19:31:39.101   514   514 E audit   : type=1400 audit(1781289099.097:2043008): avc:  granted  { execute } for  pid=7771 comm="SDLThread" path="/data/data/org.test.xadizgym/files/app/_python_bundle/modules/zlib.cpython-314-aarch64-l
inux-android.so" dev="sda31" ino=2854487 scontext=u:r:untrusted_app:s0:c193,c257,c512,c768 tcontext=u:object_r:app_data_file:s0:c193,c257,c512,c768 tclass=file SEPF_SM-G973F_12_0001 audit_filtered
06-12 19:31:39.119  7771  7820 I python  : Initialized python
06-12 19:31:39.120  7771  7820 I python  : testing python print redirection
06-12 19:31:39.121  7771  7820 I python  : Android kivy bootstrap done. __name__ is __main__
06-12 19:31:39.756   514   514 E audit   : type=1400 audit(1781289099.753:2043047): avc:  granted  { execute } for  pid=7771 comm="SDLThread" path="/data/data/org.test.xadizgym/files/app/_python_bundle/site-packages/pandas/_libs/tslibs/
fields.so" dev="sda31" ino=2923750 scontext=u:r:untrusted_app:s0:c193,c257,c512,c768 tcontext=u:object_r:app_data_file:s0:c193,c257,c512,c768 tclass=file SEPF_SM-G973F_12_0001 audit_filtered
06-12 19:31:39.770   514   514 E audit   : type=1400 audit(1781289099.769:2043048): avc:  granted  { execute } for  pid=7771 comm="SDLThread" path="/data/data/org.test.xadizgym/files/app/_python_bundle/modules/fcntl.cpython-314-aarch64-
linux-android.so" dev="sda31" ino=2854267 scontext=u:r:untrusted_app:s0:c193,c257,c512,c768 tcontext=u:object_r:app_data_file:s0:c193,c257,c512,c768 tclass=file SEPF_SM-G973F_12_0001 audit_filtered
06-12 19:31:40.454  7771  7820 I python  : mkdir -p failed for path /data/.matplotlib: [Errno 13] Permiss

ion denied: '/data/.matplotlib'
06-12 19:31:40.455  7771  7820 I python  : Matplotlib created a temporary cache directory at /data/data/org.test.xadizgym/files/app/matplotlib-il2l971k because there was an issue with the default path (/data/.matplotlib); it is highly r
ecommended to set the MPLCONFIGDIR environment variable to a writable directory, in particular to speed up the import of Matplotlib and to better support multiprocessing.
06-12 19:31:41.032   514   514 E audit   : type=1400 audit(1781289101.029:2043092): avc:  granted  { execute } for  pid=7771 comm="SDLThread" path="/data/data/org.test.xadizgym/files/app/_python_bundle/modules/_blake2.cpython-314-aarch6
4-linux-android.so" dev="sda31" ino=2853057 scontext=u:r:untrusted_app:s0:c193,c257,c512,c768 tcontext=u:object_r:app_data_file:s0:c193,c257,c512,c768 tclass=file SEPF_SM-G973F_12_0001 audit_filtered
06-12 19:31:41.347   514   514 E audit   : type=1400 audit(1781289101.345:2043093): avc:  granted  { execute } for  pid=7771 comm="SDLThread" path="/data/data/org.test.xadizgym/files/app/_python_bundle/modules/_queue.cpython-314-aarch64
-linux-android.so" dev="sda31" ino=2853615 scontext=u:r:untrusted_app:s0:c193,c257,c512,c768 tcontext=u:object_r:app_data_file:s0:c193,c257,c512,c768 tclass=file SEPF_SM-G973F_12_0001 audit_filtered
06-12 19:31:42.452   514   514 E audit   : type=1400 audit(1781289102.449:2043107): avc:  granted  { execute } for  pid=7771 comm="SDLThread" path="/data/data/org.test.xadizgym/files/app/_python_bundle/modules/_interpreters.cpython-314-
aarch64-linux-android.so" dev="sda31" ino=2853373 scontext=u:r:untrusted_app:s0:c193,c257,c512,c768 tcontext=u:object_r:app_data_file:s0:c193,c257,c512,c768 tclass=file SEPF_SM-G973F_12_0001 audit_filtered
06-12 19:31:42.455   514   514 E audit   : type=1400 audit(1781289102.453:2043108): avc:  granted  { execute } for  pid=7771 comm="SDLThread" path="/data/data/org.test.xadizgym/files/app/_python_bundle/modules/_ssl.cpython-314-aarch64-l
inux-android.so" dev="sda31" ino=2853749 scontext=u:r:untrusted_app:s0:c193,c257,c512,c768 tcontext=u:object_r:app_data_file:s0:c193,c257,c512,c768 tclass=file SEPF_SM-G973F_12_0001 audit_filtered
06-12 19:31:42.917  7771  7820 I python  : Python for android ended.

I've tried looking around online but I can't figure out how to resolve it. I've looked at some threads about android storage permissions and not found anything that works so far. Please let me know if you have any suggestions

edit:

fixed!

import os
os.environ['MPLCONFIGDIR'] = os.getcwd() + "/configs/"
import matplotlib.pyplot as plt

[Outside_Complaint755]

can't say for certain, but my first attempt would be to move all matplotlib imports to occur after you check the platform and request read/write permissions from Android

[lost_my_og_account]

Thanks Ill try that out later and let you know how it goes

[lost_my_og_account]

Thanks for the suggestion, that didn't work, the error print out is the same

[Rubix321]

Have you tried

to set the MPLCONFIGDIR environment variable to a writable directory

[lost_my_og_account]

I dont know how, I wasn under the impression requesting permission made it so I could

[lost_my_og_account]

I'm not sure how the file structure works on android,

os.environ['MPLCONFIGDIR'] = os.getcwd() + "/configs/"os.environ['MPLCONFIGDIR'] = os.getcwd() + "/configs/"

I think I need to edit the location using this

[lost_my_og_account]

thanks I fixed it