Can i learn here how to create a professional android application

Answer 1

the. closest you'll get here is...
https://www.sololearn.com/learn/1439/?ref=app
with java?
I don't think so..

Answer 2

You can learn java which can be used for android development but it doesn’t go over the android sdk. And SoloLearn doesn’t have any lessons that go in depth enough to be considered professional. You will need to use other resources such as books, YouTube or google

Answer 3

There's a open-source framework called Flutter in Dart programming language for both android and IOS