What is the purpose of using a layered approach in developing Flutter applications?

A layered approach in Flutter application development helps structure the code by separating responsibilities across different layers. Typically, layers include the presentation layer (UI), business logic, and data access. This simplifies maintenance and testing of the application, makes it easier to implement changes, and promotes code reuse. For example, the UI layer is responsible only for display, while the business logic handles data processing and decision-making.