Detect if an outgoing call has been answered

Question

Once ACTION_NEW_OUTGOING_CALL has been broadcasted, I need to capture the following event of the other party answer. Could you advice on how to achieve that please? I know it is possible as the Android dialer app changes the green Android icon to the person's photo exactly when they pick up.

UPDATED: I've had a look at the source of the app on Android handling the outgoing calls. I noticed the following method in ContactsUtils:

/**
 * Kick off an intent to initiate a call.
 */

 public static void initiateCall(Context context, CharSequence
 phoneNumber) {
     Intent intent = new Intent(Intent.ACTION_CALL_PRIVILEGED,
             Uri.fromParts("tel", phoneNumber.toString(), null));
     context.startActivity(intent); }

I guess my answer is in the activity listening for Intent.ACTION_CALL_PRIVILEGED. So to rephrase my question: Does anyone know which activity handles Intent.ACTION_CALL_PRIVILEGED?

Kacikacie

did yo u find the solution to your problem ? i am also looking for the same solution. I want to know if the other end user has picked up the call or he has disconnected – Earthshaking

Currently it's not possible to detect when exactly they have picked up; the Caller app uses an internal intent for that. – Kacikacie

yeah this is what I too concluded today :-|, anyways thanks – Earthshaking

if u dont mind please provide info ,how do u use internal intent to get the info about outgoing call received. – Winkle

Look at these threads. They disrcribe how to detect when the user answers the phone. #[phone] #9514144 – Dunite

It's funny that duplicate questions get answers but this one has none. – Stepdaughter

did you find any way to achieve it? maybe by polling or using reflection on CallManager : grepcode.com/file_/repository.grepcode.com/java/ext/… ? – Donofrio

Possible duplicate of How to detect when phone is answered or rejected – Jeep

Answer 1

I don't think there's such API and also there's no API for sending DTMFs due to the same reason that you can't tell when the call is being connected.

Elodiaelodie

Answer 2

It does not necessarily needs to be possible to capture this as an outside app. The green android icon is a part of the application that controls the call, so it does not need a broadcast to change the icon.

Elman

Yes, however, I do need to capture this event! – Kacikacie

Answer 3

As far as android's telephony manager is concerned u cannot detect programmatically whether the call has been answered or not. This is to say that u do not have the option to know when the user picked the phone at other end. Android has got 3 states of telephony manager and none of them are capable of detecting whether the call was actually answerd or not(IN CASE OF OUTGOING CALLS)

Hornstone

not true onCallStateChanged does exactly this. – Salaidh

Answer 4

The only way you may be able to do this is by parsing the Logcat logs, no PhoneStateListener event is available for that.

Some are asking for it here: https://code.google.com/p/android/issues/detail?id=14266

Anyway, in versions above Android 4.2 as Logcat is "sandboxed" it may be impossible...

Odo

If we set targetSdkVersion of our app to < 4.2. Can we then read the system logs using logcat? – Inconsecutive

i'm afraid not. because it's the Phone app's logs that are sand boxed. It doesn't matter which sdk your app is using. – Virescent

Not true there is a onCallStateChanged event that can be used – Salaidh