UWP中的语音识别在后台不起作用

Question

我希望即使应用程序未激活，UWP中的语音识别也可以识别。

我目前有以下设置：

async void InitializeSpeechRecognizer()
    {
        SpeechRecognizer speechRecognizer = new SpeechRecognizer();
        speechRecognizer.StateChanged += HandleSpeech_State;
        speechRecognizer.ContinuousRecognitionSession.ResultGenerated += HandleSpeech;

        StorageFile grammar = await Package.Current.InstalledLocation.GetFileAsync(@"Grammar.xml"); // file

        SpeechRecognitionGrammarFileConstraint grammarContraint = new SpeechRecognitionGrammarFileConstraint(grammar);
        speechRecognizer.Constraints.Add(grammarContraint);

        SpeechRecognitionCompilationResult compilantResult = await speechRecognizer.CompileConstraintsAsync(); // compile grammar

        if (compilantResult.Status == SpeechRecognitionResultStatus.Success)
            await speechRecognizer.ContinuousRecognitionSession.StartAsync();
    }

在MainPage中调用InitializeSpeechRecognizer

激活应用程序后，我可以在调试窗口中看到状态更改。 我激活另一个应用程序后，什么都没有发生:(

感谢您的任何想法！

Answer 1

您必须使用BackgroundWorker线程来使您的应用程序在不集中的情况下正常工作。

backgroundWorker1.RunWorkerAsync（testFunction）;

https://msdn.microsoft.com/zh-CN/library/cc221403(v=vs.95).aspx