ImportError: dlopen failed: cannot locate symbol "_ZTVSt9bad_alloc" about python-for-android

[tcaduser]

This looks like it is the same issue as #2675. It looks like matplotlib needs to have need_stl_shared=True in its recipe, so that the c++ runtime library is installed.

[shixiangheng]

This looks like it is the same issue as #2675. It looks like matplotlib needs to have need_stl_shared=True in its recipe, so that the c++ runtime library is installed.

Hi, thank you for your help! Could you specify which file I need to change? at what location?

[tcaduser]

If you are installed in a virtual environment, look in $VIRTUAL_ENV/lib/ for the pythonforandroid/recipes/matplotlib/__init__.py and put:

need_stl_shared=True

with the other global variables in the recipe class. If that fixes your problem, please consider making a pull request so others can benefit from it.

[tcaduser]

Actually my suggestion might not work at all, since matplotlib is a C++ recipe, and it should be including the library already

[RobertFlatt]

Read the last paragraph here https://github.com/Android-for-Python/Android-for-Python-Users#install

The error reported is (failing to report) a memory usage error.
While what looks like an NDK limitation "should" not happen, the real issue may be memory usage.
Look for Python variables storing C memory references being garbage collected.
If in doubt use Python class variables not local variables.

[shixiangheng]

If you are installed in a virtual environment, look in $VIRTUAL_ENV/lib/ for the pythonforandroid/recipes/matplotlib/__init__.py and put:

need_stl_shared=True

with the other global variables in the recipe class. If that fixes your problem, please consider making a pull request so others can benefit from it.

Yes, this one solved my problem I think. I changed the recipe.py file with "need_stl_shared=True". I also added this in the init.py file. I can see the canvas now after opening the app, so I believe the matplotlib dependency's problem is solved.