ArrayAdapter :
It is a concrete class which works with array of data. you just need to override only getview method
It is a concrete class which works with array of data. you just need to override only getview method
Listadapter
It is a an interface . So you need to implement it with concrete adapter classes.
It is a an interface . So you need to implement it with concrete adapter classes.
BaseAdapter
It is abstract class. It implements ListAdapter, SpinnerAdapter.
Its a base class for ArrayAdapter<T>, CursorAdapter, SimpleAdapter .
So you need to extend the BaseAdapter class by concrete class. you need to implement all the methods like getcount,getid etc.
Array adapter and listadapter classes are developed since in general we deal with the array data sets and list data sets
BaseAdapter is a base class for all the adapters.
