Intercept incoming calls [duplicate]

This question already has answers here: Closed 11 years ago.

Possible Duplicate:

How to block calls in andro开发者_运维问答id

You can intercept a call on Android?

---

By intercept I presume you mean detect and block/cancel?

If so that is not possible.

You can listen for the Ringing and Off Hook states to determine that an incoming call has taken place but you cant block or intercept an incoming call.