Kivy Launcher Issue and Debugging Kivy App on Android

[Scott Barnard]

Hello,

I am having trouble debugging an app that runs fine on my Windows machine but crashes immediately when trying to run an apk built on Google Colab using buildozer. I have a Samsung Galaxy S20 FE 5G phone. Other small example apps run just fine with the .apk generated.

When I had used Kivy previously (several times over the past 5 years), the Kivy Launcher worked just fine. But now it can never find the apps on my sdcard, thus, I can't run anything on the device to debug it. I have tried putting the files a number of different places as researched online but nothing seems to work. sdcard/kivy/<app name>/main.py etc and  sdcard/0/kivy/<app name>/main.py etc

Are there any other ways to debug the app within Android Studio using the .apk? I get a bunch of library debug symbols missing when I try to do that. Or maybe monitor my USB-connected device using Android Studio or some other application so I can see what is happening when the app launches?

Any help would be appreciated. Thanks!

Scott

[Robert]

I build on a virtual machine and use adb from the desktop command line.

https://github.com/RobertFlatt/Android-for-Python/tree/main/Android-for-Python-Users#appendix-a-using-adb

Search in the log for 'Traceback', a Python stack trace follows.

[Scott Barnard]

Thank you, Robert. That definitely helped. I was able to connect both to my phone and to an emulator (far less busy logs with the emulator). I noticed that the default kivy version was wrong but that did not fix the issue. I will keep looking as I see urllib3 is missing.

What I am doing is pretty simple. Just trying to use UrlRequest to get data from and API and then load an image from a URL that is in the API response afterward with AsyncImage. Either way, thanks!

[Scott Barnard]

I got it to work by being able to see the logs and that some packages were missing. Here is what ended up making it work:

requirements = python3==3.8.0,kivy==2.0.0,requests,urllib3,certifi,openssl,chardet,hostpython3==3.8.0,idna

Thanks again!