我會補償一個答案,因爲它是規範這個問題的答案:
使用CardLayout。你可以找到教程here。 CardLayout將是確保中心JPanel,卡持有人JPanel不會改變大小的完美選擇。您可以從幾乎任何控制結構交換卡片,無論是由JButton或JComboBox持有的ActionListener。
例如:
import java.awt.BorderLayout;
import java.awt.CardLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import javax.swing.*;
@SuppressWarnings("serial")
public class CardExample extends JPanel {
enum MyColor {
RED("Red", Color.RED), YELLOW("Yellow", Color.YELLOW), BLUE("Blue",
Color.BLUE);
private String name;
private Color color;
private MyColor(String name, Color color) {
this.name = name;
this.color = color;
}
public String getName() {
return name;
}
public Color getColor() {
return color;
}
}
private static final int GAP = 3;
private CardLayout cardlayout = new CardLayout();
private JPanel cardHolderPanel = new JPanel(cardlayout);
public CardExample() {
JPanel btnPanel = new JPanel(new GridLayout(1, 0, GAP, GAP));
for (MyColor myColor : MyColor.values()) {
JPanel cardPanel = new JPanel();
cardPanel.setPreferredSize(new Dimension(200, 200));
cardPanel.setBackground(myColor.getColor());
cardHolderPanel.add(cardPanel, myColor.getName());
btnPanel.add(new JButton(new ButtonAction(myColor)));
}
setLayout(new BorderLayout(GAP, GAP));
setBorder(BorderFactory.createEmptyBorder(GAP, GAP, GAP, GAP));
add(cardHolderPanel, BorderLayout.CENTER);
add(btnPanel, BorderLayout.SOUTH);
}
private class ButtonAction extends AbstractAction {
private MyColor myColor;
public ButtonAction(MyColor myColor) {
super(myColor.getName());
this.myColor = myColor;
}
@Override
public void actionPerformed(ActionEvent e) {
cardlayout.show(cardHolderPanel, myColor.getName());
}
}
private static void createAndShowGui() {
JFrame frame = new JFrame("CardExample");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(new CardExample());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGui();
}
});
}
}
使用CardLayout。谷歌會讓你到教程。 –
有關示例,請參閱以下重複問題:[使用多個面板和一個框架創建GUI](http://stackoverflow.com/questions/8275728/creating-a-gui-with-multiple-panels-and-one - 框架) –
@HovercraftFullOfEels我可能是非特定的。卡片示例不適用於我,因爲JButton將成爲處理這些更改的元素。 – user2651804