如何使用 iOS 呼叫套件模拟拨出呼叫

Question

我已经浏览了iOS CallKit文档，以下是Apple在"拨打电话"部分下提供的代码。当我尝试调用函数startOutGoingCall（）时，没有任何反应，即我没有看到任何传出调用UI。

有人可以建议我如何触发本机传出呼叫 UI。

func startOutGoingCall(){
    let uuid = UUID()
    let handle = CXHandle(type: .emailAddress, value: "[e-mail]")
    let startCallAction = CXStartCallAction(call: uuid)
    startCallAction.destination = handle
    let transaction = CXTransaction(action: startCallAction)
    callController.request(transaction) { error in
        if let error = error {
            print("Error requesting transaction: (error)")
        } else {
            print("Requested transaction successfully")
        }
    }
}

编辑：从我的代码中添加了委托方法

func provider(_ provider: CXProvider, perform action: CXStartCallAction) {
        logMessage(messageText: "provider:performStartCallAction:")
        /*
         * Configure the audio session, but do not start call audio here, since it must be done once
         * the audio session has been activated by the system after having its priority elevated.
         */
        localMedia?.audioController.configureAudioSession(.videoChatSpeaker)
        callKitProvider.reportOutgoingCall(with: action.callUUID, startedConnectingAt: nil)
        performRoomConnect(uuid: action.callUUID, roomName: action.handle.value) { (success) in
            if (success) {
                provider.reportOutgoingCall(with: action.callUUID, connectedAt: Date())
                action.fulfill()
            } else {
                action.fail()
            }
        }
    }

Answer 1

没有从 CallKit 获得的传出 UI。当你拨打传出电话时，你的应用处于打开状态，因此，你的应用应显示 UI。