When my application is in the foreground it needs to easily detect the call event like call connected, call disconnected but when my application goes into background it does not detect any call events.
So how can I detect call events like incoming call and outgoing call in background?
I am working on CallKit framework with iOS 10 and XCode 8. I found that core telephony framework has been deprecated in iOS 10.
I am using the CXCallObserverDelegate Pattern for observing the call.
I want to calculate the call duration of incoming and outgoing calls during calling.
After searching about this question i ended up with this answer i think might help
Yes, you can detect a Call, but only if your app is running in the foreground.
For this you can use the Core Telephony Framework.
If your app will fall in any of the background running categories (VOIP, AUDIO, Location tracking or accessory ) you might be able to use the
CTCallCenter in the background. But be aware that Apple will reject your app if you use the background running mode for something it was not meant for.
The CTCallCenter will allow you to detect any calls that are started or already in progress.
However, you will not be able to detect any detail about the call, the CTCall identifying the call will only tell you this state. The callID of CTCall will just give you an unique identifier for the call but not the number being called.
original question
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I want to detect incoming normal call event in my app when my app is not in running(means killed/terminated state).
I want these things to do :
1. detecting incoming call event
2. getting the caller mobile number who is calling
3. doing some stuff in the background. (like calling a web API)
Help is much appreciated.
I'm using Twilio Programmable Voice SDK. I'm facing an issue where call doesn't connect but CallKit UI starts. When I send app into background I can see the CAllKit UI running with green notification bar at the top.
There seems to be some issue with Twilio which twilio support hasn't been able to figure out and can't provide a solution.
As a workaround I want to close CallKit UI after a time interval when call doesn't connect.
I know how to kill CallKit UI when a call is connected but this doesn't apply in my case as call isn't connected at all.
My question is how do I kill CallKit UI when call isn't connected?
My issue is exactly similar to what is reported here How to close call kit when call doesn't connect but call kit ui is running in the background
Please read it again.
Call is not connected but CallKit UI is started and I want to close it. Note that when a call is not connected you will not get uuid hence you can't call disconnect.
Looking at the ViewController code, it seems like the UUID should be stored in one of this two members:
var callInvite: TVOCallInvite?
var call: TVOCall?
In the case of an incoming call that has not been already answered the UUID is contained in callInvite, otherwise (i.e. outgoing call or answered incoming call) in the call object.
Please let me clear, is it possible to integrate CallKit without using VOIP?
What I want to achieve is to get call history from iPhone. and I know it is not possible. So I want to create my own history with the help of CallKit. For this purpose I need following:
I want to detect incoming call (not voip)
Outgoing call (not voip)
In all states - background, foreground, not running, suspended
Call duration
Can we do this with the help of CallKit or is there any other workaround?
Note: It is not about VOIP Apps
is it possible to integrate CallKit without using VOIP?
I would say yes, SpeakerBox (the Apple CallKit example) doesn't use VoIP.
https://developer.apple.com/library/archive/samplecode/Speakerbox/Listings/Speakerbox_SpeakerboxCall_swift.html
is it possible to integrate CallKit in all states - background, foreground, not running, suspended without using VOIP?
No, if the app is suspended or not running you can't detect an incoming call.
For case of CallDuration in active mode can be traceable by using callkit. Let me know, if you are only interested to know Call Duration. I can give full detail.
Other all cases that you mentioned are not possible to trace, unless your phone is jailbroken.
How does Truecaller intercept incoming phonecalls on the iphone to display caller ID?
I didn't think this was possible from within the app?
Specifically, if I wanted to build this functionality, what protocols would I go about using?
http://www.truecaller.com/how-it-works
On an iPhone, without jailbreaking it:
- you cannot intercept a call in any way
- you cannot determine the phone number nor the caller ID identifying information regarding the call. Even if you could there
is no way to alter what is displayed on the call screen
- you cannot block the call
- your program can get a notification when a call is being made/terminated etc. But only if your app is executing in the
foreground at the time of the call or if the app is in the
background and has a relevant background mode (even then you can
only know there is a call in some circumstance, depending upon what
you're doing in the background and what state your in etc. Its too complex to describe the exact situation here briefly)
True Caller doesn't do that on iOS as it isn't supported with the native SDK. See their FAQ:
http://www.truecaller.com/support , specifically the "Why don't I receive live caller ID?" Section under "iPhone/Windows Phone". If you must though, try looking into a solution for jailbroken devices.
It's impossible to "intercept" calls. It is possible to handle the "background event call" when a iPhone get's a call. That said, Truecaller doesn't intercept calls. More info can be found on their website.
I am new to ios. I was wondering if there is any way to detect the call events like incoming call, outgoing call even if my app is not in foreground. And if yes it is possible then can i read the details about that call like duration, whether it is missed, dialed or recieved. Thanks in advance.
Yes you can detect a Call. but only if your app is running in the foreground.
For this you can use the Core Telephony Framework.
If your app will fall in any of the background running categories (VOIP, AUDIO, Location tracking or accessory ) you might be able to use the
CTCallCenter in the background. But be aware that Apple will reject you app if you miss use the background running mode for something it was not meant for.
The CTCallCenter will allow you to detect any calls that are started or already in progress.
However you will not be able to detect any detail about the call, the CTCall identifying the call will only tell you this state. The callID of CTCall will just give you an unique identifier for the call but not the number being called.