Question

我是开发插件的新手，并且想知道是什么原因导致测试插件在启动时挂起，即Eclipse没有响应。我知道我的代码工作正常，因为我开发了一个语音识别插件，可以在屏幕上写下所说的内容，当我打开记事本时，我说的所有内容都会打印到记事本中。

所以我想知道，我在插件生命周期中遗漏了什么导致IDE在我的插件启动时挂起？

package recognise.handlers;

public class SampleHandler extends AbstractHandler {

    public SampleHandler() {
    }

    /**
     * the command has been executed, so extract extract the needed information
     * from the application context.
     */
    public Object execute(ExecutionEvent event) throws ExecutionException {
        boolean finish = false;
        IWorkbenchWindow window = HandlerUtil.getActiveWorkbenchWindowChecked(event);
        MessageDialog.openInformation(
                window.getShell(),
                "Recognise",
                "Starting Recognition");
        TakeInput start = new TakeInput();
        //Stage a = new Stage();
        //SceneManager scene = new SceneManager();
        try {
            start.startVoiceRecognition(finish);
            //scene.start(a);
        } catch (IOException | AWTException e) {
            e.printStackTrace();
        }

        return null;
    }
}

start.startVoiceRecognition（）是否需要进行线程化？

提前致谢，如果您想查看我的清单/激活器等，请告诉我。

结论

添加了与UI线程分开的作业

/*
 * Start a new job separate to the main thread so the UI will not
 * become unresponsive when the plugin has started
 */
  public void runVoiceRecognitionJob() {
    Job job = new Job("Voice Recognition Job") {
      @Override
      protected IStatus run(IProgressMonitor monitor) {
     TakeInput start = new TakeInput();
     try {
        start.startVoiceRecognition(true);
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (AWTException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
        // use this to open a Shell in the UI thread
        return Status.OK_STATUS;
      }

    };
    job.setUser(true);
    job.schedule();
  }

Answer 1

如图所示，start.startVoiceRecognition()正在UI线程中运行，它将阻止UI线程，直到它完成并且应用程序在此期间无响应。因此，如果它正在进行大量工作，请使用Thread或使用Eclipse Job（在Eclipse管理的后台线程中运行）。

Answer 2

要取消阻止您的UI，您必须使用展示线程。

 /**
         * the command has been executed, so extract extract the needed information
         * from the application context.
         */
        public Object execute(ExecutionEvent event) throws ExecutionException {

Display.getDefault().asyncExec(new Runnable() {
      public void run() {

            boolean finish = false;
            IWorkbenchWindow window = HandlerUtil.getActiveWorkbenchWindowChecked(event);
            MessageDialog.openInformation(
                    window.getShell(),
                    "Recognise",
                    "Starting Recognition");
            TakeInput start = new TakeInput();
            //Stage a = new Stage();
            //SceneManager scene = new SceneManager();
            try {
                start.startVoiceRecognition(finish);
                //scene.start(a);
            } catch (IOException | AWTException e) {
                e.printStackTrace();
            }
     MessageDialog.openInformation(shell, "Your Popup ",
            "Your job has finished.");
      }
    });
            return null;
        }

如上所述，您可以使用Display.getDefault（）。asyncExec（），这样您的UI就会被取消阻止，而非UI代码将会执行。

插件开发：Eclipse在测试插件时会挂起

2 个答案: