I will bring an example of implementation in Kotlin for handling token expiration and refreshing the access token using Retrofit and Coroutines: First, create an API interface for the token refresh request: interface ApiService { @POST("/api/v1/users/refresh-token/") suspend fun refreshAccessToken(): TokenResponse } Create a TokenResponse data class to represent the response…

Room is an Android library that provides an abstraction layer over SQLite database. It offers an easy-to-use, compile-time-safe, and efficient way to work with databases in Android applications. Room simplifies database operations by providing type-safe queries, automatic object mapping, and support for database migrations. Define Entity Relationships: Use @Relation annotation to…

Data Structures Data structures refer to the way data is organized and stored in a computer’s memory. They provide efficient methods for accessing, manipulating, and storing data. Some common data structures include arrays, linked lists, stacks, queues, trees, and hash tables. Code Example: Array val numbers = arrayOf(1, 2, 3, 4, 5) …

1.Android Studio: The official IDE for Android development, providing a comprehensive development environment with tools for coding, debugging, testing, and building Android apps.

@Inject: Marks a constructor, field, or method as an injection point. Example: class Car @Inject constructor(engine: Engine) { @Inject lateinit var wheels: Wheels @Inject fun addCarToDriver(driver: Driver) { driver.addCar(this) } } @Module: Marks a class as a provider of dependencies. Example: @Module class CarModule { @Provides…

Dagger 2 is a popular dependency injection framework for Java and Kotlin applications. It simplifies the process of managing dependencies by providing an easy way to declare dependencies and their relationships with other components. The basic idea behind Dagger 2 is to declare all the dependencies of a component in…

Sealed class and Sealed interface are two features in Kotlin that allow the creation of restricted class hierarchies. Both of these constructs are used to define a finite set of possible subtypes, and prevent additional subtypes from being defined outside the declared hierarchy. Sealed Class: A sealed class is a class that…

In Kotlin, generics provide the ability to create classes, interfaces, and methods that can work with various types, without specifying the actual type until the object is created. In The <in> keyword in generics is used to specify a type parameter as a contravariant. …

ConstraintLayout is a flexible layout that allows you to create complex user interfaces with a flat view hierarchy. It uses constraints to position and size its child views. In Constraint Layout, the Group and Barrier features provide a way to group multiple views and align them together. …