Android: How to know the receiver had picked up my call programmatic?

Question

I want to start timer of Outgoing call when receiver receives my call(accept my call) not at the time of ringing.

for example if i am calling Mr.B then i want acknowledge when Mr.B received my call.

Please help me

Answer 1

It is not possible to read state of other phone to which you making call programmatic, you can only read your Phone state not of others!

Here is useful answer about phone state.