从另一个JPanel调用JPanel
问题描述:
我知道这是不好的建议,但我使用绝对布局,并试图从面板到面板,并很好奇如何做到这一点。从另一个JPanel调用JPanel
public class Mainscreen extends JFrame {
private JPanel Home;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
Mainscreen frame = new Mainscreen();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
public Mainscreen() {
final Dataentrylog DEL = new Dataentrylog();
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setResizable(false);
setBounds(100, 100, 618, 373);
Home = new JPanel();
Home.setBackground(new Color(255, 250, 250));
Home.setBorder(new LineBorder(Color.DARK_GRAY, 1, true));
setContentPane(Home);
Home.setLayout(null);
JButton btnNewButton = new JButton("Data Entry login");
btnNewButton.setFont(new Font("Tahoma", Font.PLAIN, 14));
btnNewButton.setForeground(new Color(0, 0, 0));
btnNewButton.setBackground(UIManager.getColor("Menu.selectionBackground"));
btnNewButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
Home.setVisible(false);
setContentPane(DEL);
setLayout(null);
}
});
btnNewButton.setBounds(44, 214, 204, 61);
Home.add(btnNewButton);
}
}
调用此JPanel其中工程
import java.awt.EventQueue;
public class Dataentrylog extends JPanel {
public Dataentrylog() {
setBounds(100, 100, 618, 373);
setBackground(new Color(255, 250, 250));
setBorder(new LineBorder(Color.DARK_GRAY, 1, true));
setLayout(null);
DEadmin DEA = new Deadmin();
final JButton btnSignIn = new JButton("Sign in");
btnSignIn.setFont(new Font("Tahoma", Font.PLAIN, 14));
btnSignIn.setBackground(UIManager.getColor("EditorPane.selectionBackground"));
btnSignIn.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
}
});
btnSignIn.setBounds(226, 282, 153, 52);
add(btnSignIn);
}
}
虽然这个作品,如果我尝试从一个的DataEntry调用另一个JPanel的日志JFrame中是空白。我能做些什么来调用另一个JPanel?任何帮助都会很棒。另外,我知道布局管理员是常态,但对于我必须做的事情,我无法找到任何有效的工作,所以尽管我做出了最佳判断,但仍选择使用null。谢谢!
答
Dataentrylog的Intialization应该是这样的
final Dataentrylog DEL = new Dataentrylog(this);
我们必须通过父的JFrame。
public class Dataentrylog extends JPanel {
public Dataentrylog(final JFrame parent) {
setBounds(100, 100, 618, 373);
setBackground(new Color(255, 250, 250));
setBorder(new LineBorder(Color.DARK_GRAY, 1, true));
final JButton btnSignIn = new JButton("Sign in");
btnSignIn.setFont(new Font("Tahoma", Font.PLAIN, 14));
btnSignIn.setBackground(UIManager.getColor("EditorPane.selectionBackground"));
btnSignIn.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
setVisible(false);
JPanel panel = new JPanel();
panel.add(new JButton("Solved"));
parent.setContentPane(panel);
}
});
btnSignIn.setBounds(226, 282, 153, 52);
add(btnSignIn);
}
}
感谢您的帮助,工作。 –