Modular android Project

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Modular Android Project
Raka Westu Mogandhi
Mobile Engineer @prismapp.io

Table of Contents
- Background
- Solution
- Case Study
- Conclusion

Background

Single Application Module

- Architecture → Model-View-Presenter
- HTTP data source → Retrofit
- Local data source → SQLite
- Packaging strategy → fe...

- Highly coupled code
- Hard to add new feature or just update the feature
- Single implementation style
- New members wil...

Solution → App Decomposition

Approach Microservice is a particular way of
designing software applications as
suites of independently deployable
service...

What is Android Module?
- It is a component of Android project.
- Module types
- Library
- Application
- An Android projec...

Examples of Android Module
- Android support libraries
- Firebase android libraries
- Third party libraries
- Glide
- RxJa...

Applying App Decomposition

How can we do it?
- Decompose app into several independent components
- The approach is based on our team and project need...

Case Study
Ecommerce App
Analytics
Module
Ecommerce
App
Checkout
Module
Products
Module
Authentication
Module
History
Modu...

App Flow
Show login page if user is isn’t
authenticated
Show product catalog if user is already
authenticated
Start
Show l...

App Flow (Contd)
Show product catalog
Show product search
Show product details
- Add to favorites
- Add to cart
Product Ca...

App Flow (Contd)
Add to cart from product page
Remove item from shopping cart page
Go to payment
Show transaction history
...

Authentication
Module
- Login
- Register
- Forgot password
Example Auth module abstraction
// Start page
ModularAuth.getIn...

Products Module
- Products catalog → product
details
- Products search → product
details
- Products favorites
- Get produc...

Checkout Module
- Add product to cart
- Start checkout screen
- Start payment preview
- Get current active checkout
data
-...

History Module
- Show all generated transaction
Example History module abstraction
// Start page
ModularHistory.getInstanc...

Analytics Module
- Track event
Example Analytics module abstraction
// Track Event
ModularAnalytics.getInstance().trackEve...

App Module
- Starting point of the application
- Compose the available modules in here
- App module have dependencies to e...

How to communicate between modules?
- Using interface or callback
- Event bus

Interface or Callback Example
EcommerceAuth.getInstance.startLoginPage(object: LoginResultListener {
override fun onLoginS...

Example Code
github.com/rakawestu/modular-android-example

Advantages
- Good for teams
- Each person/small team can work on small independent module
- Each module can have different...

Disadvantages
- Documentation should be clearer because communication between
module is important
- There may be a duplica...

- https://nearsoft.com/blog/the-microservices-approach-and-how-it-beats-
monolithics/
- https://medium.com/@tomsoderlund/m...

Thank you!

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