Android

Explain the concept of DataBinding and its role in data binding in applications.

Why is it recommended to perform all user interface operations in a single thread?

What does the context passed during the initialization of a custom user interface element in Android signify?

What functions or methods can be implemented or modified when developing a custom View component?

Have you had experience working with the concept of Clean Architecture in your projects?

What is the difference between using the map operator and flatMap in RxJava, and in which cases is it preferable to use each of them?

Explain the working principle of the DiffUtil class and its application in optimizing list updates in Android.

Junior — Middle

amoCRMtrendtechJoy Dev

Is it mandatory to use fragments when developing interfaces with Jetpack Compose?

Can you list the main elements of Android architecture and their functions?

How is element search by key within a HashMap data structure performed?

What happens to the View component when it is inactive and not displaying data

In what cases and how can the keyword final be used in Java?

Can you explain the purpose and operation of the observeOn method in reactive programming?

Junior — Middle

ЯндексJoy Dev

What are the differences between the zip and combineLatest operators in the RxJava library, and in which scenarios is it preferable to use them?

Is it possible to declare methods as final, and in what cases does it make sense?

Why is it recommended to implement equals() and hashCode() methods together when defining a class?

Can you explain what SupervisorJob is in the context of coroutines and task management in Kotlin?

Junior — Middle

WildberriesJoy DevNordClan

Explain the working mechanism of the AtomicInteger class and its role in implementing thread-safe operations.

Why does Dispatchers.Main execute on a single thread when using Coroutines?

In what order is the onAttachedToWindow method called on a View object in its lifecycle?