I noticed in the class TelephonyManager there are CALL_STATE_IDLE, CALL_STATE_OFFHOOK and CALL_STATE_RINGING. They seem to be used for incoming calls.
What I actually want to do is to be notified when an outgoing call is made, is received, or timed out. How to do that?
I don't know if you can detect a timed call, but differentiate when the call started is possible.
You can do it like this, in the CALL_STATE_IDLE:
Uri allCalls = Uri.parse("content://call_log/calls");
String lastMinute = String.valueOf(new Date().getTime() - DAY_IN_MILISECONDS);
//before the call started
Cursor c = app.getContentResolver().query(allCalls, null, Calls.DATE + " > "
+ lastMinute, null, Calls.DATE + " desc");
c.moveToFirst();
if (c.getCount() > 0) {
int duration = Integer.parseInt(c.getString(c.getColumnIndex(Calls.DURATION)));
}
if duration is > 0 then then it call was answered.
Obviously there are other flags that you should use to determine that CALL_STATE_IDLE is called after a call was made.
Hope that helps and put you in the corret way for what you are trying to do.