Question

我很难使用Swing worker来处理我的项目。它有两个程序，一个是logic (full program)，另一个是GUI。我从GUI调用逻辑程序。由于它没有反应，我尝试使用Swing工作者。但即使我使用Swing工作者，它仍然没有反应。如果我运行该程序，它会显示GUI，但是如果我点击“开始”，则另一个程序会启动，它会变得无法响应。

这是GUI program（完整节目）的片段：

    btnNewButton.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent arg0) {
            state.setText("Listening");
            System.out.println("Started Listening");
            state.setBackground(new Color(51, 204, 0));
            doRun(args);
        }
    });

public void doRun(String[] args) {

    SwingWorker<Void, String> worker = new SwingWorker<Void, String>(){

        @Override
        protected Void doInBackground() throws Exception {
            // Object to use from another program 
            HelloWorld obj = new HelloWorld();
            obj.main(args);
            return null;
        }};
        worker.execute();
}

Answer 1

因为它需要交互，所以在后台运行HelloWorld#main()可能不方便。根据建议here，直接在LiveSpeechRecognizer和publish()中间结果中实例化SwingWorker，以便在GUI中显示。您可以在Configuration构造函数中指定SwingWorker信息，也可以将其作为参数传递。概述基于示例here和here，

private class BackgroundTask extends SwingWorker<Void, String> {

    LiveSpeechRecognizer recognizer;

    public BackgroundTask() {
        statusLabel.setText((this.getState()).toString());
        Configuration configuration = new Configuration();
        configuration.setAcousticModelPath("resource:/edu/cmu/sphinx/models/en-us/en-us");
        configuration.setDictionaryPath("resource:/edu/cmu/sphinx/models/en-us/cmudict-en-us.dict");
        configuration.setLanguageModelPath("resource:/edu/cmu/sphinx/models/en-us/en-us.lm.dmp");
        recognizer = new LiveSpeechRecognizer(configuration);
        recognizer.startRecognition(true);
    }

    @Override
    protected Integer doInBackground() {
        while (!isCancelled()) {
            SpeechResult result = recognizer.getResult();
            List<WordResult> list = result. getWords();
            for (WordResult w : list) {
                // get information to publish, e.g. getPronunciation()
                // publish(getSpelling());
            }
        }
    }

    @Override
    protected void process(java.util.List<String> messages) {
        statusLabel.setText((this.getState()).toString());
        for (String message : messages) {
            textArea.append(message + "\n");
        }
    }

    @Override
    protected void done() {
        recognizer.stopRecognition();
        statusLabel.setText((this.getState()).toString() + " " + status);
        stopButton.setEnabled(false);
        startButton.setEnabled(true);
        bar.setIndeterminate(false);
    }

}

没有反应的摇摆工人

1 个答案: