What are the differences between MVC and MVVM in Android development?

What are the differences between MVC and MVVM in Android development?

MVC (Model-View-Controller) separates the application into three interconnected components, while MVVM (Model-View-ViewModel) focuses on data binding and separation of UI logic from business logic. In MVC, the controller handles user input and updates the model, which then updates the view. In MVVM, the ViewModel exposes data and commands to the view, allowing for a more reactive approach.

Which one is better for large-scale applications?

MVVM is often preferred for large-scale applications because it promotes better separation of concerns and easier testing. The data binding in MVVM allows for a more dynamic and responsive UI, which can be beneficial as the application grows.

Can you give me an example of when to use each pattern?

Sure! Use MVC for simpler applications where the overhead of data binding isn't necessary. MVVM is ideal for applications with complex UIs and data interactions, like those using LiveData and ViewModels in Android.

What are some common pitfalls when using MVVM?

Common pitfalls include overusing data binding, which can lead to performance issues, and not properly managing the lifecycle of ViewModels, which can cause memory leaks.