lwuit httprequesthandler抛出java.lang.Error：静态初始化器：java / lang / NullPointerException

Question

我在LWUIT浏览器示例中使用HttpRequestHandler。我初始化HttpRequestHandler时得到java.lang.Error：Static initializer：java.lang.NullPointerException。这是我在startApp中的代码。  public void startApp（）{

Display.init(this);

try {
    InputStream imageStream= Home.class.getResourceAsStream("tipster.res");
    //String filesPathAndName = url.getPath();        
      Resources r = Resources.open(imageStream);
      UIManager.getInstance().setThemeProps(r.getTheme("Theme 2"));
    } catch (IOException ioe) {
        ioe.printStackTrace();
      // Do something here.
    }

 HttpRequestHandler handler = new HttpRequestHandler();
    HTMLComponent h = new HTMLComponent(handler);
    h.setPage("http://m.google.com");
    ffForm.addComponent(h);

}

Answer 1

您必须先调用网络管理员的start（）才能执行网络操作。

   NetworkManager.getInstance().start();
        Storage.init("LWUITtester");