What is the difference between view and activity in android development?

Question

When do I need to create a new activity and when do I need to change the view?

My app needs to do:

Screen #1

two big buttons(sort of menu)

Scr

Answer 1

View is Display System of Android where you define layout to put subclasses of View in it eg. Buttons, Images etc. But Activity is Screen System of Android where you put display as well as user-interaction,(or whatever which can be contained in full-screen Window.)

Now for your question,you are creating full window screen#2 ,screen#3... ,so it is activity. In these screen you can define layout/or Views.

I hope it helps.