我正在尝试为简单的数据输入对话框创建一个自定义面板。我创建了一个自定义面板,我在其中添加了标签和文本字段。我正在尝试将其添加到 JOptionPane 以进行显示。
当我调用它时,我的组件不会显示,但 JOptionPane 按钮会显示。这样做的正确方法是什么?提前致谢!!
这是我创建自定义面板并调用 JOptionPane 的地方:
public class ListenCustEdit implements ActionListener {
@Override
@SuppressWarnings("empty-statement")
public void actionPerformed(ActionEvent e) {
TestPanel panel = new TestPanel();
int input = JOptionPane.showConfirmDialog(frame, panel, "Edit Customer:"
,JOptionPane.OK_CANCEL_OPTION, JOptionPane.PLAIN_MESSAGE);
if (input == 0) {
// OK
JOptionPane.showMessageDialog(frame,"Changes savewd");
} else {
// Cancel
JOptionPane.showMessageDialog(frame, "No changes were saved");
}
}
}
这是我的自定义面板类:
public class TestPanel extends JPanel {
JTextField custIdTextField;
JTextField companyTextField;
JTextField firstNameTextField;
JTextField lastNameTextField;
public TestPanel() {
initUI();
}
public final void initUI() {
// create the panel and set the layout
JPanel main = new JPanel();
main.setLayout(new GridLayout(4,4));
// create the labels
JLabel custIdLabel = new JLabel("Cust Id: ");
JLabel companyLabel = new JLabel("Company: ");
JLabel firstNameLabel = new JLabel("First Name: ");
JLabel lastNameLabel = new JLabel("Last Name: ");
// create the text fields
custIdTextField = new JTextField();
companyTextField = new JTextField();
firstNameTextField = new JTextField();
lastNameTextField = new JTextField();
// add componets to panel
main.add(custIdLabel);
main.add(custIdTextField);
main.add(companyLabel);
main.add(companyTextField);
main.add(firstNameLabel);
main.add(firstNameTextField);
main.add(lastNameLabel);
main.add(lastNameTextField);
}