Flutter Dependency Inversion (programming to an interface)

Dependency Inversion is the practice of programming to an interface rather than a concrete implementation . In a standard approach, your business logic depends directly on specific tools or SDKs, making the code rigid and difficult to test. With Dependency Inversion, you define a "contract" (an interface) that describes what a service should do, and your application only interacts with that contract. More in Github . In this example, we will walk through a common real-world scenario: Analytics .