Infosys Android Developer Interview Questions, Process, and Tips

MVVM is a design pattern that separates the UI, business logic, and data layers in an Android app.

• MVVM stands for Model-View-ViewModel.

• Model represents the data and business logic.

• View is the UI component that displays the data.

• ViewModel acts as a mediator between the Model and View, handling user interactions and updating the UI.

• Data binding is often used to connect the ViewModel with the View in MVVM.

• Example: In an A...read more

A Content Provider is a component in Android that manages access to a structured set of data.

• Content Providers are used to share data between different applications.

• They provide a standard interface for connecting data in one process with code running in another process.

• Content Providers can be used to store and retrieve data from a SQLite database, a file, or even the web.

• Examples of Content Providers include Contacts

Activity Lifecycle in Android refers to the sequence of states an activity goes through during its lifetime.

• An activity can be in one of four states: running, paused, stopped, or destroyed.

• The lifecycle methods are: onCreate(), onStart(), onResume(), onPause(), onStop(), and onDestroy().

• For example, when an activity is launched, it goes through onCreate(), onStart(), and onResume() methods in that order.

• When the activi...read more

Kotlin Coroutines are a way to write asynchronous, non-blocking code in a sequential manner.

• Coroutines are lightweight threads that can be paused and resumed at any point.

• They simplify asynchronous programming by allowing developers to write code that looks synchronous.

• They can be used for tasks such as network calls, database operations, and UI updates.

• Kotlin provides built-in support for coroutines with suspend funct