In this codelab you will learn about interfaces and DI

What it used for

Interfaces are used for:

• Seperate of consern
• The consumer class only knows about the function that are in the interfance and don't care about other function or implemtation details
• Allow changing the implementation of the function, this can be in for test fakes or other implementations

Dependency injection are used for

What are they use for

Manual

Service locator

Dagger

A google di framework that helps inject dependentis
in android we can use Android

it has component, Module
please look at:Using Dagger in Android apps

Hilt

Hilt is a di framework base on Dagger but already have all the componnents needed for android

please look at:Dependency injection with Hilt

Koin

Koin is a di framework in kotlin

It have Modules that contains single, factory

We get the dependency by using the "by inject()" delagate function

please look at:Koin in android

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