Turn Off Sound and screen blink on incoming calls in Android?

I would like to know whether this is actually possible in Android?

When Android phone receives an incoming call from a specific number the phone's ringing should stop and also the screen should not blink. What I mean is the user should not be able to know that there was incoming call, but actually there was.

I do not w开发者_JS百科ant to delete any call logs, just to stop sound on incoming call from a specific number and that too at a specific time.

Can someone let me know if this is actually possible?

When Android phone receives an incoming call from a specific number the phone's ringing should stop and also the screen should not blink. What I mean is the user should not be able to know that there was incoming call, but actually there was.

Fortunately, this should not be possible from the SDK. You can be notified that a phone call comes in, but I do not believe you can stop the ringtone, and I am really sure you cannot stop the in-call screen from appearing.