What does "knowledge of the SDK" mean in the context of Android?

Question

Android

In the requirements for Junior'a, "knowledge of the SDK" is everywhere. Does this mean that you need to know the entire SDK and be able to use it, or just have some experience, know the basic syntax of android Java and XML + understand what and where you can roughly peek in order to implement this or that function?
I apologize for the extremely naive question, but it is important for me to understand such things in order to somehow navigate the requirements for developers =)

Answer 1

This means as much knowledge as possible of the main components of the SDK. These include both UI elements and the backend (SQLite, ContentProvider, Cursor). Well, as well as knowing the specifics of each version, starting with, say, 4.0
. It is important to know what they eat with what, so that you don’t suddenly come to the project and don’t understand how to work with the ContentProvider, for example.
Google has a wonderful Android Developer Nanodegree program, all lectures are free. You can learn how to work with the main components from the first two courses: Android Development and Advanced Android Development (the coolest of all courses)