As the dependency of the mobile phone grows, the market for Mobile App Development is growing at nearly 14% per year. It is already a billion dollar market. App developers are always huge in demand, and it is the best time to learn mobile app development and be in the business.
In the market, people use more Android phones than iOS. So, it is better to target a large audience and scale your product.
If you are at this post, then you are aspiring to be a Mobile App Developer and this roadmap will guide you to android mobile development starting from scratch. All the courses stated in this article are free.
Picking up a Language
There are two languages to choose from : Java or Kotlin. After Google IO 2019, Kotlin is the preferred language for android development. It is better to stay updated with the technology. Google controls all the android app market, so this change will take place in coming years and you can see java no longer used for android development.
You can still make some projects in Java, but make sure to make the same applications in Kotlin.
Now, we have a language : Kotlin
The preferred IDE for development of android is Android Studio. Install android studio and learn the basics of Kotlin.
You should implement data structures and algorithms in Kotlin. In case you are applying for a job, data structures and algorithms should be practiced.
Learn to use git and Github. Git helps you with various versions of the application. You can modify your application and save it as a new version just so that you can revert back if things do not work out.
Now, you have picked up a language and its basics. You know how to control the versions. Now, it is time to start development. The first thing to start is to make a User Interface.
The course stated below will help you to build an app’s layout and then practice those skills by making a birthday card app. It is a free course and you should be able to complete the course in less than the stated time.
These courses are in java, complete the course and make the same in Kotlin.
User input is the base of any app or website development. It makes the application interactive and alive. This will lead you to the basics of object oriented programming. The course on udacity teaches the same by making basketball scores app and coffee-ordering app. It covers the basics of app interaction of using buttons and changing text.
You do not want to restrict your application to a single screen. Better to have a multiscreen application. Have a different feed screen, different profile screen and other screens. These are also known as activities. The third course on udacity teaches the same. At last, you will have a language learning application. It won’t take two months, just stick to it.
This course teaches you how to deal with http, threads, json parsing and many other networking terms. By the end of the course, you’ll build an app that gets you up to date earthquake information. Your core concepts will become strong once you make these examples.
Storing, retrieving and updating data are an important part in the development of any application. You will learn how to store data in internal or external storage. You will learn SQLite, add SQLite to your app and add content provider to the app.
So, basically udacity helps you from start and takes it to the end. You will be largely benefited following these courses.
Developing Android Apps
Once you have completed the above listed courses, it is time to move on to the intermediate level. For the intermediate level the course is stated below
This course will serve as the foundation of your advanced Android curriculum. This course blends theory and practice to help you build great apps the right way. This course is made by the industry experts in the android domain.
Following tasks will be achieved in the this course
- Create a simple layout.
- Learn about threading and requests,
- Convert data into visual elements,
- Navigate inside app using intents,
- Allow users to customize your app,
- Learn how content providers provide interface to share data,
- Understand architecture components,
- Run jobs in background,
- Design UI for users with different languages,
- Add final polishing to your app.
Now, it is time to hit the home run. You have done beginner level courses and intermediate level courses, the last one remaining is the advanced level android development.
Advanced Android App Development
In this course, you will learn how to make your app production-ready. You will develop a variety of different sample apps, each designed to showcase advanced capabilities of the Android platform, including fragments, widgets, media playback, and testing.
You’ll learn how to create UI tests using the Espresso framework, to leverage third-party libraries and services like ExoPlayer and Firebase Cloud Messaging, and use Google APIs to make your app aware of its location.
By the end of the course, you’ll know how to publish your own app to the Google Play Store, where you can reach and engage users across the globe.
In this course you will
- Use fragments to make layout,
- Use libraries for facial recognition,
- Use firebase messaging,
- Use Google APIs,
- Implement a media player,
- Make widgets for customization,
- Learn about testing,
- Finally, publish your app.
You will be developing the apps in the last two courses and you can put these final applications in your resume. Be sure to know every detail of your projects. Following this will make sure that you become a competent Android App Developer and then you can get a job at a good company or start freelancing.
Happy Coding .