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Cant start service app

See original GitHub issue

From @Fogapod on April 28, 2017 17:1

Versions

Python: 2.7
OS: android
Kivy: master

Description

Service app raises android error right after starting. No exceptions, no kivy logs. Just do not start. Faced this problem only on android building with buildozer’s android_new toolchain

Code

I get code from here: https://github.com/tshirtman/kivy_service_osc (changed line 7 and 8 to from kivy import platform)

Logs

Part of logcat where app fails to start service

Edit: removed apk.

Copied from original issue: kivy/kivy#5140

Issue Analytics

State:
Created 6 years ago
Comments:26 (14 by maintainers)

Top GitHub Comments

1reaction

AndreMirascommented, Sep 12, 2018

Seems like the bug was introduced in https://github.com/kivy/python-for-android/pull/609 Basically the pythonName is not initialised within PythonActivity.java start_service(). To fix it we could either initialise it here, or check in start.c Java_org_kivy_android_PythonService_nativeStart() if python_name is null and assign it a default value. I vote for the first option which is to assign it a default value in the PythonActivity.java file. I’ll provide a pull request later.

1reaction

titocommented, Sep 12, 2018

@AndreMiras strlen+71 and “fault addr 0x0” indicate a strlen on a null char pointer. If you compiled with sdl2 bootstrap, it’s located in https://github.com/kivy/python-for-android/blob/764b59ec1c97b413a7c5808da9f1168f0e4a5874/pythonforandroid/bootstraps/sdl2/build/src/main/java/org/kivy/android/PythonService.java#L134

The implementation is done at https://github.com/kivy/python-for-android/blob/764b59ec1c97b413a7c5808da9f1168f0e4a5874/pythonforandroid/bootstraps/sdl2/build/jni/src/start.c#L291

So one of theses are NULL, so passed NULL from the java i guess. If you have a environement you can play with, just log them in Java first to see which one is wrong, before going to nativeStart. It will help, and no need to recompile and debug the native part.