How to use the matplotlib in the project and it can work to run in the android

[ccinsz]

Hi, I use the newest version of the matplotlib-3.7.1, and it raises AttributeError: module 'os' has no attribute 'add_dll_directory'. How can I use the matplotlib successfully in my project?

And when I use toga-android~=0.3.1, it also raises ValueError("Unknown argument type", arg, type(arg)), so I change to use toga-android==0.3.0dev39, and it raises AttributeError: module 'os' has no attribute 'add_dll_directory'.

[freakboy3742]

It's not possible to use arbitrary versions of Python modules that have binary extensions. In this case, matplotlib 3.6.0 and 3.1.2 are the only versions that have any support on Android; you can check https://chaquo.com/pypi-7.0/matplotlib/ and https://chaquo.com/pypi-13.1/matplotlib/ to see the versions that have binary wheels available.

The error add_dll_directory error you're seeing is caused because Python is not finding a binary wheel for matplotlib 3.7.1, and is finding an alternate wheel (or compiling one), but that wheel is a windows wheel, not an Android. This shouldn't be succeeding; however, without logs of the build, it's impossible to say what has happened.

As for the error with Toga - it's impossible to say what is going on there, because you've provided no context for how you're generating the error.

[ccinsz]

Yes, I also try matplotlib 3.6.0 in Python 3.8 or Python 3.10, they have the same problem. I use "briefcase run android -u", and it raises
04-14 03:40:32.670 13348 13348 E Python : Please note and check the following:
04-14 03:40:32.670 13348 13348 E Python :
04-14 03:40:32.670 13348 13348 E Python : * The Python version is: Python3.8 from ""
04-14 03:40:32.670 13348 13348 E Python : * The NumPy version is: "1.24.3"
04-14 03:40:32.670 13348 13348 E Python :
04-14 03:40:32.670 13348 13348 E Python : and make sure that they are the versions you expect.
04-14 03:40:32.670 13348 13348 E Python : Please carefully study the documentation linked above for further help.
04-14 03:40:32.670 13348 13348 E Python :
04-14 03:40:32.670 13348 13348 E Python : Original error was: No module named 'numpy.core._multiarray_umath'
04-14 03:40:32.670 13348 13348 E Python :
04-14 03:40:32.671 13348 13348 D Python : Native invocation done.

[ccinsz]

And I try to change the version of the numpy, but it can't work.

[ccinsz]

I delete the entire C:\Users\ccinsz\AppData\Local\BeeWare folder and try again. And it has the license terms, I accept all, but it also raises the same problem.

[mhsmith]

Does BeeWare\briefcase\Cache\tools\android_sdk\licenses exist? If so, please post a list of the files it contains.

[ccinsz]

The problem of the licenses is solved. Thank you very much for your help @freakboy3742 @mhsmith.

[mhsmith]

Your deleted screenshot showed that all the license files were present, but with .IPGSD extensions, which I can't find any reference to on Google.

Please tell us how you solved this, so we can help other users with the same problem.

[ccinsz]

Yes, my computer will encrypt the files, I write the copy to delete the files .IPGSD extensions of the files, and solved the problem. I don't think others will have this problem.