在用label设置了背景后,再添加label就显示不出来了..
.后面添加的label是是按钮控制的,就是点击按钮后才添加进去.所以添加的label一定要在背景label后加载后再添加.并显示.
有什么label属性可以做到这一点呢?
.后面添加的label是是按钮控制的,就是点击按钮后才添加进去.所以添加的label一定要在背景label后加载后再添加.并显示.
有什么label属性可以做到这一点呢?
调试欢乐多
import java.awt.event.*;
import javax.swing.*;public class JLayeredPane1 extends JFrame
{
public JLayeredPane1()
{
super("JLayeredPane");
Integer[] layerConstants = { JLayeredPane.DEFAULT_LAYER,
JLayeredPane.PALETTE_LAYER, new Integer(101),
JLayeredPane.MODAL_LAYER, new Integer(201),
JLayeredPane.POPUP_LAYER, JLayeredPane.DRAG_LAYER };
Color[] colors = { Color.red, Color.blue,
Color.magenta,Color.cyan ,
Color.yellow,Color.green,
Color.pink };
Point position = new Point(10,10);
JLabel[] label = new JLabel[7];
JLayeredPane layeredPane = getLayeredPane();
for (int i=0 ; i<7; i++)
{
label[i] = createLabel("�� "+(i+1)+" ��",colors[i],position);
position.x = position.x+20;
position.y = position.y+20;
layeredPane.add(label[i],layerConstants[i]);
} setSize(new Dimension(280, 280));
show();
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
}
public JLabel createLabel(String content,
Color color,
Point position)
{
JLabel label = new JLabel(content,JLabel.CENTER);
label.setVerticalAlignment(JLabel.TOP);
label.setBackground(color);
label.setForeground(Color.black);
label.setOpaque(true);
label.setBounds(position.x, position.y, 100, 100);
return label;
}
public static void main(String[] arg)
{
new JLayeredPane1();
}
}