plyer VS pyobjus

Thanks for sharing your experience and links! Based on plyer's GH, it looks like you could use it to develop an iOS and Android app. If it supported more APIs (like Health Kit, accessibility), I would try it in a heartbeat.

https://github.com/kivy/plyer

OP is referring to Plyer, a library by the Kivy team.

For platform specific functionality, there is plyer which provides some simple cross-platform functionality. See the platforms/ios directory for examples of using Apple APIs via pyobjus, you may need to do that sooner than you think...

I don't develop for mobile platforms, so this is just a stab in the dark... There is a similar issue reported here: https://github.com/kivy/plyer/issues/512 which mentions some stuff about permissions, it may be worth looking into/double checking. It's also possible that some change in recent Android versions require a rewrite of the code, the mobile OS'es are moving rapidly..

Notification.notify crashes android app · Issue #296 · kivy/plyer (github.com) I tried what is given here, but it doesn't work either, please help me, I have been stuck on it for a week. The app works if toast = True, but the second I press the button where toast is false, it crashes

I mean all you 'need' is access to your phones sensors and or GPS data. So yes its possible. Have a look at https://github.com/kivy/plyer maybe it helps you get started.

I'm not aware of any examples for this, you'll have to do the detective work to figure out how it's done with Android APIs and then implement it with pyjnius.. Good places to look for example code using Android APIs are plyer/plaforms/android directory and the various repositories of Android-for-Python but obviously they don't use the keystore itself..

I have used Plyer for a native filechooser, but had a problem on MacOS, if the filter was set it would cause the app the crash. It looks like this issue has been solved! https://github.com/kivy/plyer/issues/524

If you need to make use of multiple processes, you should consider using PyObjus to leverage native iOS functionals for this.

I am not aware of any good example code for this, but you can access platform-specific APIs with pyjnius (android) and pyobjus (ios). This should allow you to implement fingerprint authentication using Google/Apple APIs for those platforms -- for Windows, Linux, MacOS you probably will need to research other solutions for doing this with Python (it doesn't really involve kivy)