I'm not a new to Android coding, but I completely locks on following problem.
Is there a way to block (hang up) incoming call, or forward incoming call to another phone number? Using only Android SDK API classes?
Or I need to use Android NDK and some low-level system modules?
I'm can't find in SDK docs any classes for managing incoming phone calls (only for monitoring via android.telephony). But I'm seen on market at least this app: