cortana 调用导致启动时崩溃

cortana invocation causes crash at startup

我有一个 Windows Phone 8.1 通用应用程序,我正在努力为它添加基本的 Cortana 支持。许多关于此的文章都是针对 Silverlight 等的。- 我发现很难找到关于此的真正好的信息。

到目前为止,如果应用程序已经 运行 或暂停,我可以激活。但是,如果应用程序完全退出,则在激活后它会立即崩溃。我已经尝试使用 Hockey 和一个简单的 "LittleWatson" 例程来捕捉崩溃,但它似乎发生得太快而无法捕捉到。我已经看到一些关于进行私人测试版并尝试获取故障转储的参考资料,但到目前为止我没有任何运气。

这是我的激活码在 app.xaml.cs 中的样子:

    protected override void OnActivated(IActivatedEventArgs args) {
        base.OnActivated(args);
        ReceivedSpeechRecognitionResult = null;
        if (args.Kind == ActivationKind.VoiceCommand) {
            var commandArgs = args as VoiceCommandActivatedEventArgs;
            if (commandArgs != null) {
                ReceivedSpeechRecognitionResult = commandArgs.Result;
                var rootFrame = Window.Current.Content as Frame;
                if (rootFrame != null) {
                    rootFrame.Navigate(typeof(CheckCredentials), null);
                }
            }
        }
    }

这是我对命令结果的检查:

    private async Task CheckForVoiceCommands() {
        await Task.Delay(1); // not sure why I need this
        var speechRecognitionResult = ((App)Application.Current).ReceivedSpeechRecognitionResult;
        if (speechRecognitionResult == null) {
            return;
        }
        var voiceCommandName = speechRecognitionResult.RulePath[0];

        switch (voiceCommandName) {
            // omitted
        }

        ((App)Application.Current).ReceivedSpeechRecognitionResult = null;
    }

通过插入消息等,我很确定它在到达这里之前很久就失败了。

我可能缺少一些简单的东西,但我不知道是什么...

是什么导致这么早崩溃?

EDIT 我尝试的一件事是使用 "debug without launch" 配置来尝试捕获异常。当我这样做时,应用程序似乎在启动画面上的调试器中永远挂起。然而,这确实让我强行休息了。它挂在

global::Windows.UI.Xaml.Application.Start((p) => new App());

据我所知,这只是告诉我应用程序挂在某个地方。这是调用堆栈中唯一的一行。

将一段 OnLaunched 代码复制到 OnActivated 中,如下例所示。激活应用程序时不会调用 OnLaunched,它会执行一些基本工作,例如激活 window.

protected override void OnActivated(IActivatedEventArgs args)
{
    // When a Voice Command activates the app, this method is going to 
    // be called and OnLaunched is not. Because of that we need similar
    // code to the code we have in OnLaunched
    Frame rootFrame = Window.Current.Content as Frame;
 
    if (rootFrame == null)
    {
        rootFrame = new Frame();
        rootFrame.CacheSize = 1;
        Window.Current.Content = rootFrame;
        rootFrame.Navigate(typeof(MainPage));
    }
 
    Window.Current.Activate();
 
    // For VoiceCommand activations, the activation Kind is ActivationKind.VoiceCommand
    if(args.Kind == ActivationKind.VoiceCommand)
    { 
        // since we know this is the kind, a cast will work fine
        VoiceCommandActivatedEventArgs vcArgs = (VoiceCommandActivatedEventArgs)args;
 
        // The NavigationTarget retrieved here is the value of the Target attribute in the
        // Voice Command Definition xml Navigate node
        string target = vcArgs.Result.SemanticInterpretation.Properties["NavigationTarget"][0];