Find if user is in a call or not?

问题

I wanted to see if a user was using the application and to see if they were in a phone call or not. I was following this link to see check if a user was in a phone call or not: iOS How to check if currently on phone call. However, this looks like it's for Objective-C. I was wondering if there was a Swift equivalent for this. This is my attempt:

    var currCall = CTCallCenter()
    var call = CTCall()

    for call in currCall.currentCalls{
        if call.callState == CTCallStateConnected{
            println("In call.")
        }
    }

However, it doesn't seem as if call has an attribute .callState like how it does in the previous example. Any help would be appreciated! Thanks!

回答1:

Update for Swift 2.2: you just have to safely unwrap currCall.currentCalls.

import CoreTelephony
let currCall = CTCallCenter()

if let calls = currCall.currentCalls {
    for call in calls {
        if call.callState == CTCallStateConnected {
            print("In call.")
        }
    }
}

Previous answer: you need to safely unwrap and to tell what type it is, the compiler doesn't know.

import CoreTelephony
let currCall = CTCallCenter()

if let calls = currCall.currentCalls as? Set<CTCall> {
    for call in calls {
        if call.callState == CTCallStateConnected {
            println("In call.")
        }
    }
}

回答2:

iOS 10, Swift 3

import CallKit

/**
    Returns whether or not the user is on a phone call
*/
private func isOnPhoneCall() -> Bool {
    for call in CXCallObserver().calls {
        if call.hasEnded == false {
            return true
        }
    }
    return false
}

回答3:

Or, shorter (swift 5.1):

private var isOnPhoneCall: Bool {
    return CXCallObserver().calls.contains { $0.hasEnded == false }
}

来源：https://stackoverflow.com/questions/29915724/find-if-user-is-in-a-call-or-not

标签

ios

swift

phone-call