How does Adapters work internally in Android SDK?

In Android SDK, Adapters serve as a bridge between the user interface components (like ListView, RecyclerView, etc.) and the data source that provides the data to be displayed. Adapters are responsible for creating a view for each item in the data source and also for recycling views that are no longer visible to optimize performance.

Adapters can be implemented in various ways, but the most common types are:

• ArrayAdapter: This is used to display an array of strings or any other default layout.
• SimpleCursorAdapter: This is used to display data from a database cursor.
• Custom Adapters: You can create your own adapter to handle complex data types and layouts.

Internally, when an Adapter is connected to a view, it is responsible for creating and binding views to data. When the data changes, the Adapter notifies the view to refresh itself. This is done using methods like notifyDataSetChanged(). The Adapter ensures that only the necessary views are created and reused to conserve resources.