Best Way to Become Android Developer – A Complete Roadmap 2023

Best Way to Become Android Developer – A Complete Roadmap 2023

Android is a free and open-source operating system that runs on mobile devices such as smartphones and tablets. Further, it was developed for smartwatches and Android TV. Each of them has a specialized interface. Android is one of the most popular smartphone operating systems. Android OS was developed by Android Inc., which Google bought in 2005. Various applications like games, music players, cameras, etc. are built for these smartphones and run on Android. The Google Play Store has over 3.3 million apps. Today, Android remains dominant on a global scale. Approximately 75% of the world's population prefers Android to 15% who prefer iOS. It is an operating system that has a huge market for apps.

A Roadmap to Learn

Start with an overview of Android. Read some Android-related blogs and also research some Android-related things. For example, read blogs on Introduction to Android Development, History of Android, Different Versions of Android, and topics such as Why Kotlin will replace Java for Android App Development, and so on, to prepare yourself mentally for your journey on Android. Make yourself self-motivated to learn Android and build some awesome projects on it. Do it on a regular basis, and begin learning new Android concepts one at a time. It will be very helpful to join some workshops or conferences on Android before you start your journey. Make your goal clear and move on toward it.

1) Programming Language

Learn these programming languages before you start learning Android.

  • Java

  • Kotlin

  • Sound Knowledge of XML (Extensible Markup Language)

2) Android Studio

It’s better to know your tools before you are going to use it. Android Studio is the official Integrated Development Environment for Google’s Android operating system, built on JetBrains’ IntelliJ IDEA software and designed specifically for Android development.

  • File Structure:

    • AndroidManifest.xml file

    • Java file

    • Drawable file

    • Layout file

    • mipmap file

    • colors.xml file

    • strings.xml file

    • styles.xml file

    • build.gradle(Module: app) file

  • Android Studio Overview:

    • Create a new project

    • Reopen, close, save the project

    • Create a new activity, classes, drawable resource files

    • Run the app on AVD of Emulator or in a real device etc.

3) Android Components

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.

  • Activity:

    • Activity life cycle

    • Handle Activity State Changes

    • Understand Tasks and Back Stack

    • Processes and Application Lifecycle

  • Services:

    • Types of Android Services

    • The Life Cycle of Android Services

  • Content Provider:

    • Content URI

    • Operations in Content Provider

    • Working of the Content Provider

    • Creating a Content Provider

  • Broadcast Receiver:

    • Implicit Broadcast Exceptions

4) Simple UI Design

After you get an idea about the different components of Android, start exploring some simple UI design, which is given below.

  • Explore different layouts:

    • Frame

    • Linear

    • Relative

    • Constraint

  • View Elements:

    • TextView

    • EditText

    • Buttons

    • ImageView

  • Intent:

    • Implicit

    • Explicit

    • Intent Filter

5) Complex UI Design

Once you've mastered simple UI design, you can move on to more complex UI design tasks, such as:

  • ListView

  • RecycleVIew

  • Fragments

  • Dialogs

  • Toast

  • Bottom Sheets

  • Navigation Drawer

  • Tabs

  • Material Design

  • Some inserting Animations

6) Storage

In Android, there are three types of storage systems:

  • Shared Preferences

  • File System

  • Database

    • RoomDB

7) Build

  • Gradle

  • Debug/ Release Configuration

8) Threading

  • Threads

  • Looper

9) Debugging

Debugging is an essential skill for any developer. So the developer must learn these things:

  • Exceptions

  • Error Handling

  • Logging

  • Memory Profiling

10) Memory Leaks

  • Cause of memory leaks

  • Detecting and fixing memory leaks

  • Context

11) Third-Party Libraries

  • Image Loading Libraries

    • Glide

    • Picasso

    • Fresco

    • COIL

  • Dependency Injection

    • Dragger
  • Networking

    • Retrofit
  • Multithreading

    • Coroutines

    • Rxjava

12) Android Jetpack

On its official site*, it says Android Jetpack is a set of libraries, tools, and architectural guidance to help make it quick and easy to build great Android apps. It provides common infrastructure code so you can focus on what makes your app unique.*

  • AppCompat library

  • Architecture components,

  • Animation and transitions

  • Android Ktx

  • Navigation

  • Paging

  • Slices

  • WorkManager

13) Android Architecture

The three famous architecture in the Android world are:

  • MVVM (Model–View–ViewModel)

  • MVI (Model-View-Intent)

  • MVP (Model View Presenter)

14) Firebase

  • FCM (Firebase Cloud Messaging)

  • Analytics

  • Remote Config

  • App Indexing

15) Unit Testing

  • Local Unit Testing

  • Instrumentation Testing

16) Security

  • Encrypt / Decrypt

  • Proguard

17) App Release

  • Signed APK

  • Play Store

18) Keep Practicing and Read Some Android Tips

“Practice makes a man perfect" which explains the importance of continuous practice in any subject to learn anything. So keep practicing and read some Android tips. Below is a complete diagrammatical representation of the Android Roadmap.

More information will be available on the below official page:

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