LWUIT未捕获的异常：java.lang.OutOfMemoryError（堆栈跟踪不完全） [英] LWUIT Uncaught exception: java.lang.OutOfMemoryError(stack trace incomplete)
问题描述
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 =http://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（）; }}
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();
}
}
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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