Volive Solutions Interview Questions and Answers

MVVM is a design pattern that separates the UI logic from the business logic.

• MVVM stands for Model-View-ViewModel

• Model represents the data and business logic

• View represents the UI

• ViewModel acts as a mediator between the View and Model

• ViewModel exposes data and commands to the View

• MVVM helps in unit testing and maintainability

Intent is used to start an activity or service. PendingIntent is used to perform an action on behalf of another application.

• Intent is used to start an activity or service within the same application or in another application.

• PendingIntent is used to perform an action on behalf of another application, such as starting an activity or sending a broadcast.

• Intent can be used to pass data between activities or services.

• Pendi...read more

Broadcast is a messaging system in Android that allows communication between different components of an app or between different apps.

• Broadcast is a way to send messages to multiple components or apps at once.

• There are two types of broadcasts: ordered and unordered.

• Ordered broadcasts are delivered to receivers in a specific order, while unordered broadcasts are delivered to all receivers at once.

• Broadcasts can be used ...read more

Marker interface is an empty interface used to mark a class as having a particular property or behavior.

• Marker interface has no methods or fields, it is used to provide metadata to the code.

• It is used to indicate that a class has a certain capability or should be treated in a special way.

• Examples of marker interfaces are Serializable, Cloneable, and Remote.

• Interfaces are used to achieve abstraction and provide a contra...read more