我是 jdialog 的新手，我一直在搜索，但似乎找不到使用自定義按鈕的解決方案。我發現的唯一解決方案是使用他們的內置輸入 JDialog。但這并不能解決我的問題。我正在嘗試將數據（單擊保存后從對話框 texfield“hello”傳遞到父框架 textField）但無法這樣做。有人遇到同樣的問題嗎？有什么幫助嗎？public class dataparse { String result; String inputValue;public void mainFrame() { JFrame frame = new JFrame(" Parent Frame "); JPanel center = new JPanel(); JButton enter = new JButton("Enter"); // JLabel data = new JLabel("data is..."); JTextField text = new JTextField(); frame.setSize(400, 400); center.setLayout(new GridLayout(0, 1)); center.add(text); center.add(enter); frame.add(center, BorderLayout.CENTER); enter.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent arg0) { confirmDialog(); text.setText(inputValue); } }); frame.setVisible(true);} private void confirmDialog(){ JTextField output = new JTextField("Hellloooo"); JButton save = new JButton("Save"); JDialog customDialog = new JDialog(); Container pane = customDialog.getContentPane(); pane.setLayout(new GridLayout(0,1)); pane.add(new JLabel("Startubg")); pane.add(output); pane.add(save); customDialog.setSize(300,400); customDialog.add(output); customDialog.add(save); customDialog.setVisible(true); save.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent arg0) { // TODO Auto-generated method stub result = output.getText(); } }); }先感謝您 ：）
3 回答
泛舟湖上清波郎朗
TA貢獻1818條經驗 獲得超3個贊
public class Window extends JFrame {
private JPanel contentPane;
private JTextField txtField;
private JButton btnSave;
private static Window frame2; // making it static so i can work on it from main()
private static int num = 500;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
Window frame1 = new Window();
frame2 = new Window();
frame1.setVisible(true);
frame2.setVisible(true);
frame2.txtField.setText("");// clear the text box of window 2
frame2.setTitle("window 2");
frame2.btnSave.setVisible(false); // won't see button on window 2
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public Window() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100 + num, 100, 506, 514);
setTitle("window1");
num += num; // so you can see both windows
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
txtField = new JTextField();
txtField.setText("Hello");
txtField.setBounds(39, 151, 376, 117);
contentPane.add(txtField);
txtField.setColumns(10);
btnSave = new JButton("save");
btnSave.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
String text = txtField.getText(); // get the text after save button was clicked.
txtField.setText("");// clear textfield of window 1.
frame2.txtField.setText(text); // set the text on textField of window 2
setVisible(true); // update
frame2.setVisible(true); // update
}
});
btnSave.setBounds(169, 302, 115, 29);
contentPane.add(btnSave);
}
}
當然，你可以讓它更加面向對象，但我想以一種形式保持簡單，這樣你就可以看到這一切。
白板的微信
TA貢獻1883條經驗 獲得超3個贊
您可以像下面的示例中那樣執行此操作。我認為您的代碼中缺少的重要行是setModal(true);.
沒有setModal(true);行，執行將直接從confirmDialog();到 ，text.setText(inputValue);無需等待用戶在對話框中輸入文本。
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class InputDialogExample {
public static void main(String[] args) {
JFrame frame = new JFrame("Frame");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JLabel label = new JLabel();
JButton openDialogButton = new JButton("Open Dialog");
openDialogButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
CustomDialog dialog = new CustomDialog(frame);
dialog.setVisible(true);
label.setText(dialog.getValue());
}
});
frame.getContentPane().setLayout(new GridLayout(2, 1));
frame.getContentPane().add(label);
frame.getContentPane().add(openDialogButton);
frame.setBounds(300, 200, 400, 300);
frame.setVisible(true);
}
}
class CustomDialog extends JDialog {
private String value;
CustomDialog(Frame owner) {
super(owner, "Dialog");
setModal(true); // This is the important line
JTextField textField = new JTextField();
JButton okButton = new JButton("OK");
okButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
value = textField.getText();
setVisible(false);
}
});
getContentPane().setLayout(new GridLayout(2, 1));
getContentPane().add(textField);
getContentPane().add(okButton);
setBounds(500, 400, 300, 200);
}
String getValue() {
return value;
}
}
海綿寶寶撒
TA貢獻1809條經驗 獲得超8個贊
將 text.setText 部分放入“保存”按鈕的 actionListener 有什么問題？
例如
public void actionPerformed(ActionEvent arg0) {
// TODO Auto-generated method stub
result = output.getText();
text.setText(result);
}
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