How to get back to root Activity from Java Code ? (Android)

Im creating activities as followi开发者_JAVA技巧ng.

A->B->C->D

When i click a button in D i need to go back to the home screen (which is A).

Can anyone suggest me some code to do this.

---

Do you need to go to android home screen? Then it is a different thing.

But if 'A' is the main activity of your application, then you can call activity 'A' with FLAG_ACTIVITY_CLEAR_TOP. This will clear all activity above 'A' and make top of stack.

---

Take a look at the Tasks and Back Stack topic in the dev guide.