The 2022 Android Developer Roadmap Part1 Medium

Dagger Hilt is a dependency injection (DI) framework built on top of the Dagger 2 library for Android app development. DI is a design pattern that allows for the separation of object creation and its dependencies, providing a more flexible and maintainable codebase. Android Studio is an integrated development environment (IDE) specifically designed for Android app development.

Android developer roadmap

Get an idea of the items listed, and just start building some apps keep the items listed in the back of your mind and have a deep dive when using them. REST (Representational State Transfer) is an architectural style for designing networked applications. It defines a set of principles and constraints for building web services that are scalable, stateless, and interoperable.

Don’t Just LeetCode; Follow the Coding Patterns Instead

Therefore you can design loosely coupled dependencies between the classes. There are some necessary building blocks that an Android application consists of. These loosely coupled components are bound by the application manifest file which contains a description of each component and how they interact. Kotlin is approved by google and Google has already declared Kotlin as a official language .

This blog will guide you through your android developer roadmap and help you understand the fundamentals. Glide, developed by bumptech, is one of the most popular image libraries and has been for a long time. It has been used in a lot of global products and open source projects, including Google’s official open source projects. The observer pattern is also one of the most frequently used patterns in Android development to build loosely coupled architectures between components. It can also be used to overcome Android platform limitations, such as communicating between independent Android components. Glide, developed by bumptech, is one of the most popular image libraries and has been for a long time.

Creating an Activity

By breaking down complex initiatives into manageable phases, roadmaps enhance decision-making, resource allocation, and risk mitigation. Testing is a fundamental part of the software development life cycle (SDLC). DI is a very important part of software development and you should take it seriously because it will make your life easier. This is where Dagger (Hilt) comes into play because it will create all the jobs for us in the need of creating required dependencies which we can then normally use in different places. So basically what that means is when class X uses some functionality of class Y, it’s said that class X has a dependency on class Y.

If you’d like to get notified as we release future posts, join the watchers on GitHub or follow Stream on Twitter. You only need to look at the sections that seem helpful to you. Also, please note that this roadmap is opinionated, so if you have different opinions than those of the author, we’d love to hear them. In this section, you covered the overall architecture of the Android platform. System apps are pre-installed apps such as email, SNS messaging, calendars, internet browsing, contacts, and more, which are located in the system partition with your ROM.

Role based Roadmaps

Unlike threads, coroutines is purely a user-level language abstraction, so it’s not directly tied to the OS resources and each coroutines object is allocated in the JVM heap. That means coroutines are controllable by the user side, consume much lighter resources, and have lower cost switching contexts expenses than threads. The presentation layer uses simple abstractions with interfaces approximating business logic, such as querying data from local databases and fetching remote data from the network. The actual implementation classes perform the heavy lifting and execute the domain-related work.

Android developer roadmap

You can use them for creating the user interface together with the representation of the user interface layouts. DataStore is another Android Jetpack library by Google, which is a data storage solution that allows you to store key-value pairs in your local storage. Landscapist supports tracing image states, composing custom implementations, and animations, such as circular reveal and crossfade. It also introduced a new concept called ImagePlugin in a recent version, which allows you to attach and implement image loading behavior easier and faster. Landscapist is a Jetpack Compose image loading library that fetches and displays network or local images with Glide, Coil, and Fresco, developed by Jaewoong (skydoves).

Found this project useful ❤️

Room is an SQLite object-relational mapping (ORM) library provided by the Android Jetpack. It simplifies working with SQLite databases by abstracting the underlying database access and providing a high-level API to interact with the database. RecyclerView is a powerful and flexible view container that allows for efficient display and scrolling of large data sets in Android applications.

Android developer roadmap

It generates a binding class that provides direct references to views defined in a layout file, eliminating the need for findViewById() calls. Git is a distributed version control system that allows developers to track changes, collaborate, and manage source code repositories efficiently. It provides a structured and organized way to manage code revisions, enabling developers to work on different versions of a project simultaneously and merge changes seamlessly. Shared Preference is a lightweight mechanism for storing small amounts of key-value data in Android applications. It provides a simple and convenient way to store and retrieve application preferences, user settings, or other persistent data.


By isolating user resources from one another, they can be protected from each other. The foundation of the Android platform is the Linux kernel, which allows Android to take advantage of certain security features. The Linux kernel has been used in millions of security-sensitive systems since its creation in 1991, so it has a long history of consistently being researched, tested, and improved upon by thousands of developers. In addition to the points above, Google announced their Kotlin-first approach to Android development at Google I/O 2019. Since the announcement, the number of applications built with Kotlin has increased exponentially.

  • You may already have used Creational patterns at least once, such as Builder pattern, Factory method pattern, and Singleton pattern to create instances in Android development.
  • MVI (Model-View-Intent) is also a popular architecture in modern Android development since Jetpack Compose has brought declarative programming to our lives.
  • Shared Preference is a lightweight mechanism for storing small amounts of key-value data in Android applications.
  • The Android platform takes advantage of the Linux multiuser system with its own Application Sandbox, which isolates app resources from each other and protects apps and the system from malicious apps.
  • Here is the list of items that you are going to need when developing Android applications.
  • A key goal of software engineering is to produce code that is clean and easy to maintain.

An observable object notifies other objects when something in its data changes and that allows the user interface to always match the latest data. As Kotlin progressed it introduced a new option called Kotlin coroutines. The concept of coroutines is not that new, a lot of programming languages had them already.What’s cool about coroutines is that they allow you to write asynchronous code in a way that looks similar to synchronous. Not to worry though, Android provides a lot of pre-built components which help in creating apps.