动态更改ListCellRenderer的内容 [英] Dynamically changing contents of ListCellRenderer
问题描述
我正在尝试使用Twitter4构建一个Twitter客户端.我将用户的tweet和信息等存储在Jlist的DefaultListModel中.我想添加用户个人资料图片，并为此进行操作，请使用ListCellRenderer设置图标.我的问题是，我只能将ListCellRenderer文本和图标设置为一个用户信息.我使用循环下拉多个tweet并将其添加到模型中，但是渲染器仅设置了一条tweet多次.
I am attempting to build a twitter client using Twitter4. I am storing the users tweets and info etc in a DefaultListModel in a Jlist. I want to add the users profile picture and to do this I am setting the Icon using a ListCellRenderer. My issue here is that I am only able to set the ListCellRenderer text and icon to one users information. I use a loop to pull down multiple tweets and add them to the model, but the renderer is only setting one tweet many times.
这是检索推文的代码
for (int i = 0; i < list.size(); i++) {
Status each = (Status) list.get(i);
UI.model.addElement("<html><body style='width: 450px;'>"
+ "@"
+ each.getUser().getScreenName()
+ " - "
+ each.getText() + "<html><br>");
UI.whatIsDisplayedList.setCellRenderer(new newsFeedRenderer(each)); }
这就是我设置ListCellRenderer的方式
And this is how I am setting the ListCellRenderer
JLabel pic = new JLabel();
try {
ImageIcon img = new ImageIcon(TwitterFunctions.eachTweetProfilePic(each.getUser()));
pic.setIcon(img);
setIcon(img);
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (TwitterException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
setText( "@" + each.getUser().getScreenName() + " - " + each.getText());
要对推文进行正确的格式化，我必须进行哪些修改?
What modifications would I have to make to enable the correct formatting of the tweets?
感谢您的帮助！
推荐答案
您不应将newFeedReader()传递给setCellRenderer();ListCellRenderer是用于绘制单元格的对象，不能用作数据库类型的对象.
You shouldn't pass a newFeedReader() to setCellRenderer(); A ListCellRenderer is an object used to paint cells, not to be used as a database kind of object. What you're going to want to do is,
- 在开始时获取所有状态
- 将它们作为数组传递给JList
- 然后创建一个自定义ListCellRenderer类，并在您的getListCellRendererComponent方法中，返回包含ListCellRenderer代码的JLabel
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