APP内通话录音的探索

var callCenter: CTCallCenter

override init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: Bundle?) {

    callCenter = CTCallCenter()

    super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)
}

/**
注意:
不要使用模拟器调试
使用SIM卡的真机调试
*/
func getCarrierInfo() {

    let info: CTTelephonyNetworkInfo = CTTelephonyNetworkInfo()
    print(info)

    let carrier: CTCarrier = info.subscriberCellularProvider!
    print(carrier)

    print(info.currentRadioAccessTechnology!)
    print(carrier.carrierName!)
    print(carrier.mobileCountryCode!)
    print(carrier.mobileNetworkCode!)
}

/**
注意:
使用SIM卡的真机调试
另一台手机呼叫此设备时，能看到打印的信息
*/
func setupCallEventHandler() {

    callCenter.callEventHandler = { call in

        if call.callState == CTCallStateDialing {

            print("正在播出电话")
        } else if call.callState == CTCallStateIncoming {

            print("来电话了")
        } else if call.callState == CTCallStateConnected {

            print("电话通了")
        } else if call.callState == CTCallStateDisconnected {

            print("电话挂断了")
        } else {

            print("什么也没做")
        }
    }
}