Is there any way i can detect DTMF tones ?


New Member
very often we hear about the ad voice calls instructing us to dial '1' to get more details about this and that or dial '2' to go back to the previous menu etc.

As far as i know these are IVRS app that responds to DTMF tones dialed by the phone user

Similarly, how can we detect a DTMF tone once a caller called to my mob and my app received the call and started to listen for DTMF

Is it possible ?

If so in which way i can go about coding it via B4A?