LWUIT未捕获的异常：java.lang.OutOfMemoryError（堆栈跟踪不完全）

问题描述

限时删除！！

我开发使用LWUIT的标签，我想显示我的LWUIT选项卡屏幕上的RSS Feed标题和图像的RSS应用程序，但是当我运行我的应用程序，我能够显示多达三个列表项成功地（含图片标题），之后我面临的 java.lang.OutOfMemoryError（堆栈跟踪不完整） Eventhough有列表项present？任何一个可以帮助......谢谢......

下面我code：

 公共类流程{
     保护XMLMidlet MIDlet的;     窗体Form1;
     形象画像;
     选项​​卡标签;
     私有列表myNewsList;
    私人向量的TopNews;
    私人矢量topstory;
    私人命令cmdExit;
    私人命令m_backCommand;
      私有列表新闻列表;
        私人表格窗口2;
    流程（XMLMidlet的MIDlet）抛出IOException
           this.midlet = MIDlet的;
           的TopNews =新的向量（）;
        topstory =新的向量（）;
       标签=新的选项卡（）;
        form1的=新表（）;
        窗口2 =新表（）;
           尝试{
            新闻列表=新名单（的TopNews）;
            newsList.setScrollVisible（假）;
            newsList.setRenderer（新NewsListCellRenderer（））;
         m_backCommand =新指令（返回）;
        cmdExit =新指令（EXIT）;
           tabs.addTab（Topstory，新闻列表）;
            form1.addComponent（BorderLayout.CENTER，制表符）;
}
赶上（例外五）{
    e.printStackTrace（）;
}}   公共无效过程（）{
       尝试{
   字符串URL =htt​​p://www.teluguone.com/news/tonefeeds/news/news-1.rss;       form1.show（）;
       ParseThread MyThread的=新ParseThread（本）;
       myThread.getXMLFeed（URL）;        }赶上（例外五）{        }    }
   公共无效addNews（新闻newsItem）{尝试{
            topnews.addElement（newsItem）;
            newsList.addActionListener（新的ActionListener（）{                公共无效的actionPerformed（ActionEvent的AE）{                    列表源=（列表）ae.getSource（）;
                    新闻selectedNewsItem =（新闻）source.getSelectedItem（）;
                    如果（selectedNewsItem！= NULL）{
                        displayCompleteNewsScreen（selectedNewsItem）;                    }                }
            }）;
}
赶上（的OutOfMemoryError R）{}
        form1.show（）;
    }
    私人无效displayCompleteNewsScreen（新闻detailNews）{       尝试{
        form2.removeAll（）;
        form2.repaint（）;
        form2.addCommand（m_backCommand）;
        form2.addCommandListener（新的ActionListener（）{            公共无效的actionPerformed（ActionEvent的AE）{
                form1.show（）;
            }
        }）;        HTMLComponent COM =新HTMLComponent（）;
        COM.SET preferredSize（新尺寸（300,300））;
com.setShowImages（假）;       com.setBodyText（detailNews.getDescription（））;
       form2.addComponent（COM）;
        //form2.addComponent(big）;
        }
       赶上（OutOfMemoryError异常五）{       }
        form2.show（）;    }}
 

解决方案

有多大的图像？我们谈论这里什么手机？

我打赌你得到的图像没有被缩小显示之前。相信有在LWUIT方法来缩小图像的尺寸。记住图像添加到您的表单后处置创建临时的形象。

I developed an Rss Application using LWUIT Tabs,i want to display Rss Feed Titles and images on my Lwuit Tab screen,but when i run my application i am able to display three List (title with image)items Sucessfully,after that i am facing java.lang.OutOfMemoryError(stack trace incomplete) Eventhough there are list items present?can any one help......thanks...

Here my Code:

public class Process {
     protected XMLMidlet midlet;

     Form form1;
     Image image;
     Tabs tabs;
     private List myNewsList;
    private Vector topnews;
    private Vector topstory;
    private Command cmdExit;
    private Command m_backCommand;
      private List newsList;
        private Form form2;
    Process(XMLMidlet midlet) throws IOException {
           this.midlet=midlet;
           topnews = new Vector();
        topstory = new Vector();
       tabs = new Tabs();
        form1 = new Form();
        form2=new Form();
           try {
            newsList = new List(topnews);
            newsList.setScrollVisible(false);
            newsList.setRenderer(new NewsListCellRenderer());
         m_backCommand = new Command("Back");
        cmdExit = new Command("EXIT");
           tabs.addTab("Topstory", newsList);
            form1.addComponent(BorderLayout.CENTER, tabs);
}
catch(Exception e){
    e.printStackTrace();
}           }

   public void process() {
       try{
   String url = "http://www.teluguone.com/news/tonefeeds/news/news-1.rss";

       form1.show();
       ParseThread myThread = new ParseThread(this);
       myThread.getXMLFeed(url);

        } catch (Exception e) {

        }

    }
   public void addNews(News newsItem) {

try{
            topnews.addElement(newsItem);
            newsList.addActionListener(new ActionListener() {

                public void actionPerformed(ActionEvent ae) {

                    List source = (List) ae.getSource();
                    News selectedNewsItem = (News) source.getSelectedItem();
                    if (selectedNewsItem != null) {
                        displayCompleteNewsScreen(selectedNewsItem);

                    }

                }


            });
}
catch(OutOfMemoryError r){

}
        form1.show();


    }


    private void displayCompleteNewsScreen(News detailNews) {

       try{
        form2.removeAll();
        form2.repaint();
        form2.addCommand(m_backCommand);
        form2.addCommandListener(new ActionListener() {

            public void actionPerformed(ActionEvent ae) {
                form1.show();
            }
        });

        HTMLComponent com=new HTMLComponent();
        com.setPreferredSize(new Dimension(300,300));
com.setShowImages(false);

       com.setBodyText(detailNews.getDescription());
       form2.addComponent(com);
        //form2.addComponent(big);
        }
       catch(OutOfMemoryError e){

       }
        form2.show();

    }



}

解决方案

How big are the images? What handset are we talking about here?

I am betting that the images you're getting are not being scaled down before being displayed. I believe there are methods in LWUIT to scale down the size of an image. Remember to dispose of the temp image you create after adding the image to your form.

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