查找用户是否在通话中?

问题描述

我想查看用户是否正在使用该应用程序，并查看他们是否在通话中.我正在查看此链接，以查看用户是否正在打电话:.但是，这似乎是针对Objective-C的.我想知道是否有一个Swift等效项.这是我的尝试:

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.")
        }
    }

但是，看起来好像call没有属性.callState，如上例所示.任何帮助，将不胜感激！谢谢！

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!

推荐答案

Swift 2.2的更新:您只需安全地解开currCall.currentCalls.

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.")
        }
    }
}

---

先前的答案:您需要安全地解包和来告诉它是什么类型，编译器不知道.

---

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.")
        }
    }
}

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