Hi all. Nice to see such a great Android forum out here. Like a brand new user I have a question(hope it's not stupid). Well, actuall question is in the title, but what I want to know is what kind of things I should know to be at least Junior Developer(in Android)? I mean what kind of things I need? For now I now Java, Android UI, I know how to create simple apps(like Bluetooth, NFC, Text2Speech, Camera, simple Graphics....), I mean I created A LOT simple apps. Hope this question is understandable and not stupid. If so, sorry for that, I'am just curious, because I really want to start a career in this area. Thanks a lot for whatever answers will be 
.
.