why is android development so lengthy ? :(

[AC Question]

Android: is Adapter and Adapterview both are classes? which is the parent class? why adapterview is callled view group?what is meant by this line
ListAdapter adapter = new SimpleAdapter();
why a different constructer is used here,rather than using ListAdapter() constructor?

 

[fotolaino]

If you go to the calss declaration you wull see

public class MyClass extends BigClass

this means that Biglass is the parent and MyClass is the child. MyClass has access to all methods and is just a "copy" of bigClass with eventually added functionality.