get phone call states in iOS 10

问题:

I want to get phone call states in my app.
After some search I found CoreTelephony framework. But that is deprecated in iOS 10. SO is there any other alternative available?
I also found CallKit. A new framework in iOS 10. But didn't getting call states from same as I searched.

回答1:

import CallKit into your AppDelegate and add the following code:

// AppDelegate
var callObserver: CXCallObserver! // add property

// in applicationDidFinishLaunching...
callObserver = CXCallObserver()
callObserver.setDelegate(self, queue: nil) // nil queue means main thread

extension AppDelegate: CXCallObserverDelegate {
    func callObserver(_ callObserver: CXCallObserver, callChanged call: CXCall) {
        if call.hasEnded == true {
            print("Disconnected")
        }
        if call.isOutgoing == true && call.hasConnected == false {
            print("Dialing")
        }
        if call.isOutgoing == false && call.hasConnected == false && call.hasEnded == false {
            print("Incoming")
        }

        if call.hasConnected == true && call.hasEnded == false {
            print("Connected")
        }
    }
}

回答2:

You can try this code:

1. Create the instance of call observer

   @property ( nonatomic ) CXCallObserver *callObserver;
   

2. Initiate the instance and set the delegate

   _callObserver = [CXCallObserver new];
           [_callObserver setDelegate:self queue:dispatch_get_main_queue()];
   

3. Add the call observer delegate

   - (void)callObserver:(CXCallObserver *)callObserver callChanged:(CXCall *)call{
   
       if (call == nil || call.hasEnded == YES) {
           NSLog(@"CXCallState : Disconnected");
       }
   
       if (call.isOutgoing == YES && call.hasConnected == NO) {
           NSLog(@"CXCallState : Dialing");
       }
   
       if (call.isOutgoing == NO  && call.hasConnected == NO && call.hasEnded == NO && call != nil) {
           NSLog(@"CXCallState : Incoming");
       }
   
       if (call.hasConnected == YES && call.hasEnded == NO) {
           NSLog(@"CXCallState : Connected");     
       }
   }
   

In Swift 4.2:

var callObserver: CXCallObserver()

callObserver.setDelegate(self, queue: DispatchQueue.main)

func callObserver(_ callObserver: CXCallObserver, callChanged call: CXCall) {

    if call == nil || call.hasEnded == true {
        print("CXCallState : Disconnected")
    }

    if call.isOutgoing == true && call.hasConnected == false {
        print("CXCallState : Dialing")
    }

    if call.isOutgoing == false && call.hasConnected == false && call.hasEnded == false && call != nil {
        print("CXCallState : Incoming")
    }

    if call.hasConnected == true && call.hasEnded == false {
        print("CXCallState : Connected")
    }
}

回答3:

To be notified about phone call states, starting from iOS 10, you should use CXCallObserver class and implement its CXCallObserverDelegate protocol method, that is suggested in this answer:

- (void)callObserver:(CXCallObserver *)callObserver callChanged:(CXCall *)call {
    if (call.hasConnected) {
        // perform necessary actions
    }
}

回答4:

There is some delegate method available that indicate incoming and outgoing call status.

See : https://developer.apple.com/reference/callkit

回答5:

Apple does not allow you to access these informations though you can do so by using third party libraries but your app would be rejected at the time of submittion to App Store because apple does not allow to gain access to sensitive user information .