组件状态改变时的动作

Question

我有一系列单选按钮作为数组生成并显示在jPanel中。

我希望在第二个面板中启用一系列复选框，当单选按钮处于输出状态但不在输入状态时(输入或输出是单选选项)。

我想在任何单选按钮状态改变时调用检查状态方法，但不知道如何做到这一点，因为它们是在数组中创建的。

当前该方法仅在实际单击单选按钮面板时调用。

package my.ArduinoGUI;
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.GridLayout;
public class ArduinoGUI extends javax.swing.JFrame {
public ArduinoGUI() {
    initCustomComponents();
    initComponents();
}
/**
 * This method is called from within the constructor to initialize the form.
 * WARNING: Do NOT modify this code. The content of this method is always
 * regenerated by the Form Editor.
 */
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
    buttonGroup1 = new javax.swing.ButtonGroup();
    jPanel1 = new javax.swing.JPanel();
    digitalPinPanel = new javax.swing.JPanel(new GridLayout(0, 3));
    jPanel3 = new javax.swing.JPanel(new GridLayout(0, 1));
    jPanel2 = new javax.swing.JPanel();
    setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
    jPanel1.setBorder(javax.swing.BorderFactory.createTitledBorder("Outputs"));
    jPanel1.setName("Outputs"); // NOI18N
    javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
    jPanel1.setLayout(jPanel1Layout);
    jPanel1Layout.setHorizontalGroup(
        jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addGap(0, 209, Short.MAX_VALUE)
    );
    jPanel1Layout.setVerticalGroup(
        jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addGap(0, 106, Short.MAX_VALUE)
    );
    digitalPinPanel.setBorder(javax.swing.BorderFactory.createTitledBorder("Digital Pin State"));
    digitalPinPanel.addMouseListener(new java.awt.event.MouseAdapter() {
        public void mouseReleased(java.awt.event.MouseEvent evt) {
            digitalPinPanelMouseReleased(evt);
        }
    });
    digitalPinLabelArray = new javax.swing.JLabel[digitalPinTotal];
    digitalPinRadioButtonArray = new javax.swing.JRadioButton[digitalPinTotal][2];
    digitalPinGroupArray = new javax.swing.ButtonGroup[digitalPinTotal];
    for(int x = 0; x < digitalPinTotal ; x++) {
        digitalPinGroupArray[x] = new javax.swing.ButtonGroup(); // populate button group
        digitalPinLabelArray[x] = new javax.swing.JLabel(); // populate label array
        digitalPinLabelArray[x].setText("Pin " + (x +2));
        digitalPinPanel.add(digitalPinLabelArray[x]); // add label to panel
        for(int y = 0; y < 2; y++){
            digitalPinRadioButtonArray[x][y] = new javax.swing.JRadioButton(); // populate radio button array
            if (y == 0) {digitalPinRadioButtonArray[x][y].setText("Input");}
            if (y == 1) {digitalPinRadioButtonArray[x][y].setText("Output"); digitalPinRadioButtonArray[x][y].setSelected(true);
            }
            digitalPinGroupArray[x].add(digitalPinRadioButtonArray[x][y]); // assign radio buttons to group
            digitalPinPanel.add(digitalPinRadioButtonArray[x][y]); // add buttons to panel
        }
    }
    jPanel3.setBorder(javax.swing.BorderFactory.createTitledBorder("Generated Boxes"));
    digitalPinOutputArray = new javax.swing.JCheckBox[digitalPinTotal];
    for(int x = 0; x < digitalPinTotal ; x++) {
        digitalPinOutputArray[x] = new javax.swing.JCheckBox();
        digitalPinOutputArray[x].setText("Output Pin " + (x+2));
        jPanel3.add(digitalPinOutputArray[x]);
    }
    jPanel2.setBorder(javax.swing.BorderFactory.createTitledBorder("Analog Pin State"));
    javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2);
    jPanel2.setLayout(jPanel2Layout);
    jPanel2Layout.setHorizontalGroup(
        jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addGap(0, 126, Short.MAX_VALUE)
    );
    jPanel2Layout.setVerticalGroup(
        jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addGap(0, 0, Short.MAX_VALUE)
    );
    javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
    getContentPane().setLayout(layout);
    layout.setHorizontalGroup(
        layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addGroup(layout.createSequentialGroup()
            .addContainerGap()
            .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addComponent(jPanel3, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
            .addGap(18, 18, 18)
            .addComponent(digitalPinPanel, javax.swing.GroupLayout.PREFERRED_SIZE, 159, javax.swing.GroupLayout.PREFERRED_SIZE)
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
            .addComponent(jPanel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
            .addContainerGap())
    );
    layout.setVerticalGroup(
        layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addGroup(layout.createSequentialGroup()
            .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                .addGroup(layout.createSequentialGroup()
                    .addGap(23, 23, 23)
                    .addComponent(jPanel3, javax.swing.GroupLayout.DEFAULT_SIZE, 199, Short.MAX_VALUE)
                    .addGap(18, 18, 18)
                    .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGroup(javax.swing.GroupLayout.Alignment.LEADING, layout.createSequentialGroup()
                    .addContainerGap()
                    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                        .addComponent(digitalPinPanel, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                        .addComponent(jPanel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))))
            .addContainerGap())
    );
    digitalPinPanel.getAccessibleContext().setAccessibleName("DigitalPins");
    pack();
}// </editor-fold>
private void digitalPinPanelMouseReleased(java.awt.event.MouseEvent evt) {
// if output selected enable checkbox otherwise disable it
    for (int x = 0; x < digitalPinTotal; x++) {
        if (digitalPinRadioButtonArray[x][0].isSelected() == true) {
            digitalPinOutputArray[x].setEnabled(false);
        }
        if (digitalPinRadioButtonArray[x][1].isSelected() == true) {
            digitalPinOutputArray[x].setEnabled(true);
        }
    }
}
/**
 * @param args the command line arguments
 */
public static void main(String args[]) {
    /* Set the Nimbus look and feel */
    //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
    /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
     * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
     */
    try {
        for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
            if ("Windows".equals(info.getName())) {
                javax.swing.UIManager.setLookAndFeel(info.getClassName());
                break;
            }
        }
    } catch (ClassNotFoundException ex) {
        java.util.logging.Logger.getLogger(ArduinoGUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
    } catch (InstantiationException ex) {
        java.util.logging.Logger.getLogger(ArduinoGUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
    } catch (IllegalAccessException ex) {
        java.util.logging.Logger.getLogger(ArduinoGUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
    } catch (javax.swing.UnsupportedLookAndFeelException ex) {
        java.util.logging.Logger.getLogger(ArduinoGUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
    }
    //</editor-fold>
    /* Create and display the form */
    java.awt.EventQueue.invokeLater(new Runnable() {
        public void run() {
            new ArduinoGUI().setVisible(true);
        }
    });
}
// Variables declaration - do not modify
private javax.swing.ButtonGroup buttonGroup1;
private javax.swing.JPanel digitalPinPanel;
private javax.swing.JPanel jPanel1;
private javax.swing.JPanel jPanel2;
private javax.swing.JPanel jPanel3;
// End of variables declaration
private int digitalPinTotal = 12;
private int analogPinTotal = 8;
private javax.swing.JCheckBox[] digitalPinOutputArray;
private javax.swing.JRadioButton[][] digitalPinRadioButtonArray;
private javax.swing.ButtonGroup[] digitalPinGroupArray;
private javax.swing.JLabel[] digitalPinLabelArray;
private void initCustomComponents() {
    //throw new UnsupportedOperationException("Not yet implemented");
    // create checkbox array
}
}

Answer 1

 digitalPinRadioButtonArray[x][y].addActionListener(new ActionListener() {
                @Override
                public void actionPerformed(ActionEvent e) {
                    // TODO Auto-generated method stub
                    if(e.getActionCommand().equals("Output"))
                            {
                                    digitalPinOutputArray[2].setSelected(true);
                            }
                }
            });

试试这个