Android incoming call interception , call forwarding

Question

I would like to know how to intercept incoming calls and also how to forward them. I know there are several questions regarding this topic here and elsewhere on the net, but all the answers use the android.intent.action.PHONE_STATE action which is broadcast always after the phone begins to ring and the call screen is shown.
That's why I'm looking for a solution where i could intercept the call in an early stage before any notification (ringing etc..) has been done. I would like to know if maybe this is possible on a platform level in native code and if yes how ? Or perhaps with some kind of trick with the SDK ?

Answer 1

In general, if you can't do it in Java, you can't do it in the NDK. Most of the time the opposite is true: You can't do MOST things on Android in the NDK.

I don't know of a way to do that, and frankly doubt it exists: It would be a huge security hole if you could download an application that would forward calls to another number.