janhavisinghh / janhavi_singh

TruHApp

TrueCaller Url Hit App. To implement the app I have used Mobius Architecture using Test Driven Development written in Kotlin. Following is a deep dive into the implementation.

External Libraries Used:

1. Retrofit
2. Data Binding Library

Architecture Used:

1. Mobius

Language Used:

1. Kotlin

State Chart Diagram:

State chart diagram is for the multiple states the app is going to be in.

In the diagram,

1. The nodes represent different Models
2. Arrows represent Events
3. Dotted arrows adjoining the little circle represents an Effect
4. Nodes with dotted borderline represent a No Change Model

Implementation Guide:

• Mobius is an Architecture introduced by Spotify which follows the Mobius Loop.
• Start from the TrueCallerUpdateTest class. Update function is the heart of Mobius Loop. All the events pass through the update function and then dispatch the next model or an effect.
• Effects are impure functions. Things like making a network call or showing a toast message are done in the TrueCallerEffectHandler class.
• TrueCallerViewRenderer class implements the 3 algorithms for displaying needed output.
• Unit Tests are written for the above classes in TrueCallerViewRendererTest, TrueCallerEffectHandlerTest, and TrueCallerUpdateTest

Project Screenshots: