E-commerce android application using firebase firestore for online database , firebase messaging cloud for pushing notifications, firebase authentication and advanced android topics. E-commerce android application that makes user buy his food easily .

MVVM is pretty good in such cases. It goes one step further in separating the responsibilities of your code base. It clearly abstracts the logic of the actions that can be performed in the app.

• Kotlin : A modern programming language for Android development.
  
• Android Architecture Components : Collection of libraries that help you design robust, testable, and maintainable apps.
  • ViewModel : Stores UI-related data that isn't destroyed on UI changes.
    
  • Navigation component : Navigation refers to the interactions that allow users to navigate across, into, and back out from the different pieces of content within your app.
    
  • Room Database : Room is a library to save data in a local database.
    
  • LiveData : Data objects that notify views when the underlying database changes.
    
  • Data Binding : It helps in declaratively binding UI elements to in our layout to data sources of our app.
    
• Dagger Hilt : Hilt is a dependency injection library for Android that reduces the boilerplate of doing manual dependency injection in your project.
  
• Kotlin coroutines : Coroutine is a concurrency design pattern that you can use on Android to simplify code that executes asynchronously.
  
• Retrofit : A type-safe HTTP client for Android and Java.
  
• SDP Library : An android lib that provides a new size unit - sdp (scalable dp). This size unit scales with the screen size. It can help Android developers with supporting multiple screens.
  
• Glide : Glide is a fast and efficient open source media management and image loading framework for Android that wraps media decoding, memory and disk caching, and resource pooling into a simple and easy to use interface.
  
• Google Maps SDK : Build dynamic, interactive, customized maps, location, and geospatial experiences for your Android apps.
  
• Stripe Payment SDK : Stripe is an online payment processing for internet businesses. Stripe is a suite of payment APIs that powers commerce for online businesses of all sizes.
  
• Firebase : Firebase is a Backend-as-a-Service (Baas). It provides developers with a variety of tools and services to help them develop quality apps, grow their user base, and earn profit. It is built on Google’s infrastructure.