創建滾動窗格,我有以下類...問題與Swing
public class MessageFrame extends JFrame {
public MessageFrame(List<HistoryMessage> messages){
setLayout(null);
JPanel container = new JPanel();
JScrollPane scrPane = new JScrollPane(container);
getContentPane().add(scrPane);
int i = 1;
for(HistoryMessage m : messages){
//TODO: needs to be StringBuilder
StringBuilder sb = new StringBuilder();
sb.append("<html> <strong>");
sb.append(m.getSender());
sb.append(" ");
Date d = new Date(m.getDate());
sb.append(d);
sb.append(":</strong>");
sb.append(m.getPayload());
sb.append("</html>");
JLabel l = new JLabel(sb.toString());
l.setBounds(30, i, 400, 50);
i += 125;
container.add(l);
}
setTitle("Messages");
setSize(500,500);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLocationRelativeTo(null);
setVisible(true);
}
}
這說明我什麼,但是,如果我不使用滾動窗格此工程...
public MessageFrame(List<HistoryMessage> messages){
setLayout(null);
int i = 1;
for(HistoryMessage m : messages){
//TODO: needs to be StringBuilder
StringBuilder sb = new StringBuilder();
sb.append("<html> <strong>");
sb.append(m.getSender());
sb.append(" ");
Date d = new Date(m.getDate());
sb.append(d);
sb.append(":</strong>");
sb.append(m.getPayload());
sb.append("</html>");
JLabel l = new JLabel(sb.toString());
l.setBounds(30, i, 400, 50);
i += 125;
add(l);
}
setTitle("Messages");
setSize(500,500);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLocationRelativeTo(null);
setVisible(true);
}
但沒有滾動,所以只有前幾個出現,有人可以幫助我與我失蹤?
我會嘗試這樣做我必須手動設置窗格的大小? – Jackie
將scrollpane添加到框架的內容窗格中,以便在繪製框架邊框和標題欄後,將需要框架中剩餘的任何空間。 – camickr