[英]JButtons in JPanel in another JPanel
是否可以將具有JButton的JPanel添加到拆分JPanel? 現在,我將帶有JButton的JPanel添加到JFrame中,但是我希望將其與其他JPanels一起放在JPanel上。 當我嘗試執行此操作時,我得到一個帶有分隔符的完全空白的JPanel。
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public class Panel extends JPanel implements Runnable, ActionListener {
public Panel(){
JFrame frame = new JFrame();
ctsMenu = new JPanel(new GridLayout(2,2));
ctsMenu.setPreferredSize(new Dimension(500,500));
for (int iRows = 0; iRows < 2 ; iRows++){
for (int iColumns = 0; iColumns < 2; iColumns++){
sGrid[iRows][iColumns] = new JButton ("("+iRows+","+iColumns+")");
ctsMenu.add(sGrid[iRows][iColumns]);
sGrid[iRows][iColumns].addActionListener(this);
panel.add(ctsMenu);
}
}
sGrid[0][0].setText("A");
sGrid[0][1].setText("B");
sGrid[1][0].setText("C");
sGrid[1][1].setText("D");
frame.setContentPane(panel);
frame.pack();
frame.setVisible(true);
}}
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public MainFrame()
{
setTitle( "Split Pane Application" );
setBackground( Color.GREEN );
JPanel topPanel = new JPanel();
topPanel.setLayout( new BorderLayout() );
getContentPane().add( topPanel );
createPanel1();
createPanel2();
createPanel3();
createPanel4();
splitPaneV = new JSplitPane( JSplitPane.VERTICAL_SPLIT );
topPanel.add( splitPaneV, BorderLayout.CENTER );
splitPaneV.setDividerLocation(300);
splitPaneV.setLeftComponent( gamePanel);
// gamePanel.addKeyListener(new KeyListener());
gamePanel.setFocusable(true);
gamePanel.requestFocusInWindow();
splitPaneV.setRightComponent( panel3 );
}
}
public void createPanel1(){
// deleted to take up less space
}
public void createPanel2(){
// deleted to take up less space
}
public void createPanel3(){
panel3 = new Panel();
}
public void createPanel4(){
//deleted to take up less space
}
}
你問:
是否可以將具有JButton的JPanel添加到拆分JPanel?
是的,絕對有可能這樣做。 這類似於我們一直在做的事情:
import javax.swing.*;
public class SplitPaneEg {
private static void createAndShowGui() {
JPanel panel1 = new JPanel();
panel1.setBorder(BorderFactory.createTitledBorder("Panel 1"));
panel1.add(new JButton("Button 1"));
panel1.add(new JButton("Button 2"));
JPanel panel2 = new JPanel();
panel2.setBorder(BorderFactory.createTitledBorder("Panel 2"));
panel2.add(new JButton("Button 1"));
panel2.add(new JButton("Button 2"));
JSplitPane splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT, panel1,
panel2);
JFrame frame = new JFrame("Split Pane Example");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(splitPane);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGui();
}
});
}
}
您聲明:
現在,我將帶有JButton的JPanel添加到JFrame中,但是我希望將其與其他JPanels一起放在JPanel上。 當我嘗試執行此操作時,我得到一個帶有分隔符的完全空白的JPanel。
然后,您的代碼有錯誤,但是不幸的是,根據您發布的代碼,我懷疑我們中的任何人都可以做的不只是猜測。 如果您需要更多具體的幫助,那么您將需要發布一個小的可運行示例來說明您的問題,即sscce 。
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