Intercept Call Activity

How to listen for Incoming and Outgoing call and perform our task accordingly. Here is how to do it:

public class MyPhoneStateListener extends Service{

    @Override

    public IBinder onBind(Intent arg0) {

        return null;

    }

    @Override

    public void onCreate() {

        super.onCreate();

            StateListener phoneStateListener = new StateListener();

            TelephonyManager telephonymanager = (TelephonyManager)getSystemService(TELEPHONY_SERVICE);

            telephonymanager.listen(phoneStateListener, PhoneStateListener.LISTEN_CALL_STATE);

        }catch(Exception e){ }

    }

    class StateListener extends PhoneStateListener{

        @Override

        public void onCallStateChanged(int state, String incomingNumber) {

            super.onCallStateChanged(state, incomingNumber);

            switch(state){

                case TelephonyManager.CALL_STATE_RINGING:

                    break;

                case TelephonyManager.CALL_STATE_OFFHOOK:

                    break;

                case TelephonyManager.CALL_STATE_IDLE:

                    break;

            }

        }

    };

    @Override

    public void onDestroy() {

       

    }

}

Note:  While stopping service don't foget to remove the listener and add these permissions to your manifest file:

<uses-permission android:name="android.permission.READ_PHONE_STATE" />