Xamarin.iOS callkit＆＃34;无法与帮助应用程序进行通信。＆＃34;

Question

我试图用最简单的代码模拟一个调用（juste用于测试目的）。这是我使用的代码：

var handleTypes = new[] { (NSNumber)(int)CXHandleType.PhoneNumber };

CXProviderConfiguration config = new CXProviderConfiguration("Test")
{
    MaximumCallsPerCallGroup = 1,
    SupportedHandleTypes = new NSSet<NSNumber>(handleTypes)
};

CXProvider provider = new CXProvider(config);

provider.SetDelegate(new ProviderDelegate(), null);

CXCallController controller = new CXCallController();
CXHandle handle = new CXHandle(CXHandleType.Generic, "test");
CXStartCallAction action = new CXStartCallAction(new NSUuid(), handle);
CXTransaction transaction = new CXTransaction(action);

controller.RequestTransaction(transaction, (error) =>
{
    Console.WriteLine(error);
});

我的ProviderDelegate看起来像这样：

class ProviderDelegate : CXProviderDelegate
{
    public override void DidReset(CXProvider provider)
    {

    }

    public override void PerformAnswerCallAction(CXProvider provider, CXAnswerCallAction action)
    {
        base.PerformAnswerCallAction(provider, action);
    }

    public override void PerformEndCallAction(CXProvider provider, CXEndCallAction action)
    {
        base.PerformEndCallAction(provider, action);
    }

    public override void PerformStartCallAction(CXProvider provider, CXStartCallAction action)
    {
        base.PerformStartCallAction(provider, action);
    }

    public override void PerformSetHeldCallAction(CXProvider provider, CXSetHeldCallAction action)
    {
        base.PerformSetHeldCallAction(provider, action);
    }

    public override void TimedOutPerformingAction(CXProvider provider, CXAction action)
    {
        base.TimedOutPerformingAction(provider, action);
    }

    public override void DidActivateAudioSession(CXProvider provider, AVAudioSession audioSession)
    {
        base.DidActivateAudioSession(provider, audioSession);
    }

    public override void DidDeactivateAudioSession(CXProvider provider, AVAudioSession audioSession)
    {
        base.DidDeactivateAudioSession(provider, audioSession);
    }

    public void ReportIncomingCall(NSUuid uuid, string handle)
    {

    }
}

同样，我只是想在屏幕上显示某些内容。 ProviderDelegate在每个方法中都有断点，所以我知道它们何时被调用。

当我运行代码时，我会在我的(error)=>委托中回复，错误为Couldn’t communicate with a helper application. NSCocoaErrorDomain:4097。

注意：我已将VoIP权利添加到我的应用中，重新安装了所有内容，运行了最新版本的macOS以及最新的Xcode。