I was getting pissed off reading this because I totally understand and know such situations.

Wesołych świąt! :) Poland/Polska

Best :)

@thestR- Of course, there are not so many ifs, but sometimes the Christmas tree creates itself. And it is funny :P

Where do you work that you can be there? Are you looking for a mobile application programmer from Poland? :) #jealous

Good for you, you took the first step to cure it. :)

@taosif7 No, you only write views in xml (as in Android) and the rest in C #. For Java, I'd rather look at the React Native, unfortunately I do not know this technology very well, only what I know is javascript and is from facebook (and apparently also has a large society).

It all depends on what you can do, if you know C# best, I recommend Xamarin.
Xamarin is not so difficult and has a large society, so if you encounter some difficulties at 100% you will find a solution on the web.
In addition, Xamarin can be native as well as forms. Which means you can write pages in native language and core in C #, or all in C #.

@dontPanic thx ;)