How does DataBinding work internally in Android SDK?

DataBinding in Android SDK is a powerful tool that allows developers to create a link between the UI components of their application and the data sources, enabling seamless updates and improved performance. Internally, it works by generating an intermediary layer that observes changes in the data, ensuring that updates are automatically reflected in the UI.

When you use the DataBinding library, it automatically generates binding classes based on the layout XML files. These classes hold references to the views in the layout and also provide methods to bind data to those views. When the data changes, the bindings notify the views to update themselves.

DataBinding is particularly useful in MVVM (Model-View-ViewModel) architecture, where the ViewModel holds the data for the UI. This allows for a clear separation of concerns, making it easier to manage UI updates and interactions.