Learn to Build Real Time Classified app like OLX - Kotlin - NullClass

Special Sale the courses from 497 rs for limited time.

The  rise  of  the  E-commerce  industry  has  directly impacted micro, small & medium enterprises  (MSME)  in  India  by  providing  a  road  to  financing,  technology  and training  along  with  a  favourable cascading effect on other industries as well. Indian E-commerce and reselling industry has been on an upward growth path and is soon expected  to  surpass  the  US to become the second largest E-commerce and reselling market in the world by 2034.Technology   enabled   innovations   such  as  digital  payments,  hyper-local  logistics, analytics  driven  customer  engagement  and  digital  advertisements  is  working  as  a great  support  for  the  growth  in  the  sector.  The  growth  in  the  E-commerce  and reselling   sector   is   also   boosting  employment,  increasing  revenues  from  export, increasing  tax collection by ex-chequers, and providing better products and services to  customers  in  the  long-term.  Rise in smartphone usage is also expected to rise by whooping 84 per cent to reach 859 million by 2022.Before beginning with the course details, let’s understand how e-commerce is important and has become an inevitable part of our lives: Irrespective of how long you have you been planning to create an e-commerce app, are you someone who’s still not sure about taking your supplies to stores, grocery shops, and supermarkets online?The world is going mobile. There is hardly any case of total cut-off. Because a mobile world ensures connectivity, across boundaries, across regions, across districts and domains. Online delivery and selling of essential goods and services has become a government priority. Even in regions where it was unpopular, the capacity is being created.Here are our reasons why you should definitely try building this application if you are into android app development: 

  • People love to shop online.
  • Small businesses perform better through mobile solutions.
  • It is essential to recognise the millennial trend. Because they are going to become the future customers. Marketing analysts show that nearly 60% of millennial use mobile devices for selling and reselling

About the training:

Candidates who wish to enrol for the course will be required to perform the following tasks:

  • Student will be required to attend the training through 17+ hours of video series. Student will be able to access the videos available under the curriculum column.
  • Once the student has completed the video lectures, they will receive a mail regarding the project that he or she will be required to implement it.
  • The student will be required to share their project’s APK and code to us as soon as he/she completes the task.

What You Will Learn:

  • Programming Basics
  • Kotlin Basics
  • Android Basics
  • Bottom Navigation View
  • Android Permission
  • Splash Screen
  • Android Callback
  • Android Location Service
  • Google Login
  • Firebase
  • MVVM
  • Android Layouts
  • Shared Preferences
  • Firebase Auth
  • Facebook Login
  • Android Basics
  • Fragments
  • Recyclerview
  • Firestore
  • Material Store
  • Github
  • Differnt Layouts
  • Debugging
  • Unit Testing

Features and benefits:

  • After completing the training, you will be able to build a real-world e-commerce reselling application.
  • MNCs require experience and some hard-earned projects in your skills. After the training, you will have access to both.
  • You will receive a professional mentoring which will make you ready for the
  • With the knowledge on how to make an e-commerce reselling application, you can monetize yourself and start freelancing.
Refund :

You can get 100% refund until 7 days of enrolment.

1. How to get the assignment after completing the training?
Email will be sent to you within hours after you have completed your project.
2. Will we get one to one mentor?
Yes, every student will have access to one mentor until they complete the training.
3. How will our daily progress be checked?
This training is self-paced and students can complete it according to their speed and comfort.
4. Do we get real – industry experience?
Yes, students will definitely get exposure to the real industry experience as we will teach students the current work happening in the industry.
5. Do we get a certificate?
Yes, students will get industrial certificate.
6. There are other platforms to learn. What is unique in your training?
Unlike other platforms, NullClass provide students with real industrial experience.
7. Do you offer demo classes?
Yes, students will get a demo of the training before enrolling.


Teacher, Author, CEO

The founder wants to make it possible for every individual struggling to find a job, to accomplish more, and live life on their terms. Determined and optimistic, he has spent countless hours in his venture to solve students’ problems, both academic and personal.... The founder wants to make it possible for every individual struggling to find a job, to accomplish more, and live life on their terms. Determined and optimistic, he has spent countless hours in his venture to solve students’ problems, both academic and personal.

Read More

Course Curriculum

Section 1 : Introduction
Introduction – OLX Selling App FREE 00:05:00
Source Code – OLX 00:00:00
Section 2 :Basics of Programming
Programming Basics 1 00:14:00
Programming Basics 2 00:31:00
Programming Basics 3 FREE 00:10:00
Programming Basics 4 00:22:00
OOPS Concepts 1 FREE 00:42:00
OOPS Concepts 2 FREE 00:24:00
Section 3 :Creating an OLX Application
Starting with Project – OLX FREE 00:22:00
Splash Screen 00:28:00
Google Login 00:30:00
Adding SHA1 For Google Authentication 00:03:00
Facebook Login 00:18:00
Configuring Firebase Database 00:22:00
Retrieving Data from FireBase 00:21:00
Set RecyclerView Adapter FREE 00:17:00
Search and Itemclick on Firebase 00:08:00
Selling Screen and GitHub 00:22:00
Post an Ad in Firebase 00:29:00
Capture And Upload an Images on FireBase 00:27:00
Capture an Image From Camera And Gallery 00:30:00
Image Preview Screen 00:26:00
Uploading Images on FireBase FREE 00:21:00
Creating My Ad Screen 00:33:00
Design of Ad Details Screen 00:20:00
Set Data of Ad Details Screen FREE 00:28:00
Browse Category Screen 00:17:00
Profile Screen 00:21:00
Setting Screen 00:18:00
Unit Testing and Debugging 00:15:00

Perks and Benefits


Students will get an internship certificate.


Students will be able to connect with mentors to resolve doubts.


Students will get a stipend of ₹3000 if they complete the internship task in 30 days.

Refund policy

You can get 100% refund until 7 days of Enrollment.

Course Reviews


52 ratings
  • 5 stars27
  • 4 stars25
  • 3 stars0
  • 2 stars0
  • 1 stars0
  1. 5

    Best Android hands on internship which gives real world working experience with a e commerce platform.

  2. Loved it


    Love u null class team .....kudos to this platform.

  3. Rating


    I gave five stars because of course mentors work

  4. 4

    I feel learning platforms are not for me and this has nothing to do with NullClass, there are really some great courses but I just can’t focus!!

  5. Pleased to get it!


    Been surprised how actually good this platform is. User interface is simple, customer support is very responsible, so happy that I found this!

  6. 5

    Lovely course. Spent more than a month and completed the course. learnt the
    concepts and understood the real world applications. android studio is very powerful.
    Thank you NullClass. You explanation is very clear

  7. 4

    Great course with real-world examples. I would recommend it to those who are
    starting to learn android studio, as well as to those who want to do more complex
    programs. Most things explained very clearly. Plenty of opportunities for learning
    additional materials, like how to troubleshoot errors, how to install android studio
    libraries. Many thanks to the tutor.

  8. 5

    I have accomplished my course and enjoyed every lecture. The Real World
    Applications were all immensely satisfying! I urge you to attempt this course if you
    are studying android studio as a beginner or intermediate. NullClass is a
    transcendent instructor and appreciation and thankfulness for developing this
    course! Also acknowledgements to the community for the amazing support and

  9. 4

    I finished the course and here is my thought. I would say this course goes beyond
    my expectation. There is some part more interesting to me than the others.

  10. nice course


    Just right for me. I think some of it would be a little daunting for complete
    beginners because things change so rapidly. I have a little experience and while I
    found some things challenging, I find that this is good for proper learning. An
    excellent course.

  11. 5

    The course covers a wide variety of information. While some parts of the videos
    may be outdated due to time, solutions can be easily found in the Q&A.

  12. 5

    If u are someone who is curious about how the applications on your device works
    and how to build them...this course is highly recommended for u. From Hello World
    to building your own applications this is a very interesting journey.If you are already
    familiar with the basic concept of any programming language that would be
    beneficial for u coz i feel the basics section could be more elaborated.

  13. 4

    The course is really really excellent and helped me a lot in better understanding of
    android studio and it's real world application.Thank You so much for this wonderful
    course NullClass.

  14. 4

    This course is well structured and brings the excitement to learn different projects.
    The course is explained clearly and easy to understand for any beginner who wants to
    learn. NullClass has done a great job. Thank you NullClass.

  15. 5

    Glad to take this amazing and interesting android studio course! I have finished
    more than half of the course and I enjoyed it. Before I took this course, I found that
    programming was so difficult and didn't know how to apply what I have learnt......

  16. 5

    The apps built in this course are really "Real World Applications" that I can use for
    solving real-life problems. Although I am not a android studio programmer or a data
    scientist, I can at least make a Desktop Bookstore for myself, and enhance the data
    visualization for my job.

  17. 4

    The course was amazing. The project oriented dynamics is the best way to learn
    anything, and see how things work. The teacher is clear in his lectures and gives tips
    to understand better the code he is writing.

  18. 4

    I came into this class after having read two books, thinking that I’d know
    everything already, but it’s not what happened. I learned so much from NullClass
    that I look at android studio fairly differently now. The focus of the class is less on
    abstract or technical aspects and more on the practical.

  19. best course


    The course is really really excellent and helped me a lot in better understanding of android studio and it's real world application.Thank You so much for this wonderful course NullClass

  20. great course


    Great course while studying computer science students during summer vacation and I enjoyed each part of the course. Whoever is having passion for android development must pursue this course for having better knowledge about front and back end development

  21. great couse


    The Course is just great. Perfect for a beginner looking to start developing Android apps. Some of the concepts taught are really great like Firebase, ML Kit which makes this course very special to consider. The concepts are explained in a very nice and polite way.

  22. Excellent Course


    Excellent course for developers to build a complex application using various android concepts

  23. Cant believe it


    Oh my god! I never knew that building apps was this easy!! In just a couple of weeks of pursuing this course I was able to completely understand how to make my own olx app!! And it works!!! Omg! I'm in awe.

  24. Great Course


    This course by nullclass is a wonderful opportunity to enter into the world of Android app development. I would definitely recommend this course to everyone who is either just getting started with app development or is a intermediate level app developer.

  25. good


    I have tried many courses for app development both online and offline but this course on “how to build your own olx app” is thus far the best! After completing this course I have understood the specifics of the olx app.

  26. Good


    thank you nullclass for this course. I enjoyed this course thoroughly and would definitely recommend it to every android app development aspirant!

  27. good overview over the subject


    excellence in detail

  28. next level


    I loved this course!! It is so satisfying to finally develop my very own olx app!

  29. recommend this course


    I would definitely recommend this course to everyone who has either just started their android app development journey or is an intermediate level app developer.

  30. own olx app


    i just loved this course on how to build your very own olx app! The best thing about this course is that it is self paced and is explained by citing real world examples!

  31. Awesome


    Everything is explained in detail, use of animations and visuals, Awesome. The course is good for the people with previous experience as well as for the beginners. Awesome experience with Nullclass 100% recommend to anyone looking for Real-time explained projects on App development

  32. I highly recommend


    It is kind of a trend nowadays to shop everything online. This course has helped me not only to understand this trend and the importance of building an app like OLX but also to actually build an app of my own. I highly recommend joining this course. Trust me you regret it

  33. Nice


    Best course to learn

  34. I loved watching


    I loved watching all the videos of this course. Each and everything was explained in explicit detail.

  35. wonderful opportunity


    I have enrolled in several of the app development courses prior to this one but I don't thing any one was as easy to comprehend and follow as compared to this course by NullClass! Thank you nullclass for this wonderful opportunity

  36. wonderful course


    the best thing about this course is that it is created such that even beginners like me can totally understand the course! Thank you for this wonderful course!

  37. so supportive


    I like how the staff is so supportive and how everything is explained using crisp and precise real world examples.

  38. loved this course


     I cherished each and every part of this course. Hope to find more courses like these in the future. I totally loved this course to the fullest.

  39. crisp and precise


    I just finished creating my very own olx app and I just love it. This course was so easy to understand and everything was explained in a crisp and precise manner. Thank you NullClass.

  40. every logic is explaine


    this course by nullclass was one of a kind. It taught me how to develop my very own olx app with so much ease. I really liked how precisely and easily every logic is explained in this course

  41. would definitely recommend


    I enjoyed this course to the fullest and would definitely recommend if to you if you are a beginner level or intermediate level app developer.

  42. Great course


    Great course

  43. wonderful!


    learnt a lot...very informative and beginner friendly course.

  44. Learn to Build Real Time Classified app like OLX - Kotlin


    It was a challenging but great learning experience. The course was made interesting with the help of the mentor and task assigned. It was a great fun learning experience.

  45. OLX project


    This is one of the coolest project i worked so far. The project was unique and the learning experience was great.

  46. OLX project


    I worked on a few projects before but this was really great so far. Everything was good and comprehensive. The video Tutorials were in details.

  47. Good course


    The assignments were very beneficial to the entire learning process. I will say I learned quite a bit in this course, I also enjoyed myself. I really liked the flexibility of this course. It worked well with busy scheduling, and the expectations were clear and upfront.

  48. Really good course


    I have truly enjoyed the course. The course was indeed helpful and informative in learning a helpful feedback. A lot of key words that i learn so much from this course.

  49. Good course


    The course was refreshing, interactive and interesting. a good mixture of practical and theory with enough time to discuss issues.

  50. Doubt solving was good


    Whole lectured we enjoyed with fun and learning. If any concept not clear then mentor cleared it smoothly. I will refer this to my friends.

  51. Amazing study atmosphere


    The course was refreshing, interactive and interesting. provides an extremely useful tool that will help to improve my skills. The enthusiasm the tutors brought to the course engendered a positive and questioning atmosphere, excellent course.

  52. Olx-kotlin


    The course starts from very basics but after some time it grows very well. Nice course by the way.

Courses > Learn to Build Real Time Classified app like OLX - Kotlin

Learn to Build Real Time Classified app like OLX - Kotlin

4.5( 52 REVIEWS )

Overview The  rise  of  the  E-commerce  industry  has  directly impacted micro, small & medium enterprises …