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androidpython-3.xkivykivy-language

Kivy crashes on launch when importing external libraries

I used the Kivy Launcher to run a basic "Hello World" program and it worked fine, but when I added in an import cv2 at the beginning, the app crashes immediately after launching.

Main.py: Main.py code

Android.txt: Image of Android.txt

Thanks!

Solution

  • The kivy launcher is used to run strictly Kivy modules and Python preinstalled modules. So in this case, since cv2 doesn't come preinstalled in normal python installations, kivy launcher doesn't recognise it and then gets a "ModuleNotFoundError: No Module named cv2" error, which causes it to crash. So, if you're trying to import modules aside from those which come preinstalled with python you'd have to compile into a .apk file using Buildozer to run it on an android