What Is Base Adapter in Android?

BaseAdapter is a common base class of a general implementation of an Adapter that can be used in ListView, GridView, Spinner etc. Whenever you need a customized list in a ListView or customized grids in a GridView you create your own adapter and extend base adapter in that.

How do you use a base adapter?

To use the BaseAdapter with a ListView, a concrete implementation the BaseAdapter class that implements the following methods must be created:

1. int getCount()
2. Object getItem(int position)
3. long getItemId(int position)
4. View getView(int position, View convertView, ViewGroup parent)

What is android adapter called?

In Android, Adapter is a bridge between UI component and data source that helps us to fill data in UI component. It holds the data and send the data to an Adapter view then view can takes the data from the adapter view and shows the data on different views like as ListView, GridView, Spinner etc.