Question

我在uwp项目中停留了很长时间。我从Microsoft复制了样本，但结果不正确

 if (isListening == false) {
                        // The recognizer can only start listening in a continuous fashion if the recognizer is currently idle.
                        // This prevents an exception from occurring.
                        if (speechRecognizer.State == SpeechRecognizerState.Idle) {
                            isListening = true;
                            await speechRecognizer.ContinuousRecognitionSession.StartAsync();
                            isListening = false;
                        }
                    } else {
                        isListening = false;
                        if (speechRecognizer.State != SpeechRecognizerState.Idle) {
                            // Cancelling recognition prevents any currently recognized speech from
                            // generating a ResultGenerated event. StopAsync() will allow the final session to 
                            // complete.
                            await speechRecognizer.ContinuousRecognitionSession.StopAsync();
                        }
                    }
                    break;
        }

        private async void SpeechRecognizer_HypothesisGenerated(
            SpeechRecognizer sender,
            SpeechRecognitionHypothesisGeneratedEventArgs args) {

            string hypothesis = args.Hypothesis.Text;
            string textboxContent = dictateBuilder.ToString() + " " + hypothesis + " ...";

            await dispatcher.RunAsync(CoreDispatcherPriority.Normal, () => {
                richEbitBox.Document.SetText(TextSetOptions.None, textboxContent);
            });
        }

        private async void ContinuousRecognitionSession_ResultGenerated(
            SpeechContinuousRecognitionSession sender,
            SpeechContinuousRecognitionResultGeneratedEventArgs args) {

            if (args.Result.Confidence == SpeechRecognitionConfidence.Medium ||
                  args.Result.Confidence == SpeechRecognitionConfidence.High) {

                dictateBuilder.Append(args.Result.Text + " ");

                await Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () => {
                    richEbitBox.Document.SetText(TextSetOptions.None, dictateBuilder.ToString());
                });
            }
        }

        private void ContinuousRecognitionSession_Completed(
            SpeechContinuousRecognitionSession sender,
            SpeechContinuousRecognitionCompletedEventArgs args) {
        }

我试图打开听写功能，当我按下按钮时再次禁用它，一切都中断了，我收到一条错误消息，告诉我该错误与给定的文本无关

Answer 1

按钮触发有争议的听写

看起来是线程问题，我将所有SpeechRecognizer初始化步骤都移到了OnNavigatedTo方法中，并且没有错误。

protected async override void OnNavigatedTo(NavigationEventArgs e)
{
    base.OnNavigatedTo(e);
    bool permissionGained = await AudioCapturePermissions.RequestMicrophonePermission();
    if (permissionGained)
    {

        dispatcher = CoreWindow.GetForCurrentThread().Dispatcher;
        var dictationConstraint = new SpeechRecognitionTopicConstraint(SpeechRecognitionScenario.Dictation, "dictation");
        speechRecognizer.StateChanged += SpeechRecognizer_StateChanged;
        speechRecognizer.Constraints.Add(dictationConstraint);
        SpeechRecognitionCompilationResult result = await speechRecognizer.CompileConstraintsAsync();
        if (result.Status != SpeechRecognitionResultStatus.Success)
        {
            return;
        }

        speechRecognizer.ContinuousRecognitionSession.Completed += ContinuousRecognitionSession_Completed;
        speechRecognizer.ContinuousRecognitionSession.ResultGenerated += ContinuousRecognitionSession_ResultGenerated;
        speechRecognizer.HypothesisGenerated += SpeechRecognizer_HypothesisGenerated;

    }
    else
    {

    }
}

我已经上传了案例演示here，请检查。

按钮引发有争议的听写

1 个答案: