Reputation: 129
I know a lot of people asked this question, but i still can't resolve this problem. I have a JPanel inside a JScrollPane. JPanel contains six panels that are loaded dynamically. After the panels are loaded the system makes a vertical autoscroll to the middle of the panel. I have to avoid this, so I tried with this:
panel.scrollRectToVisible(scrollPane.getBounds());
But it doesn't work. My scrollPane has been created in this way
JScrollPane scrollPane= new JScrollPane();
scrollPane.setBounds(panel.getBounds());
scrollPane.setViewportView(panel);
Can you help me?
Upvotes: 0
Views: 1142
Reputation: 109823
panel.scrollRectToVisible(scrollPane.getBounds());
should be panel.scrollRectToVisible(JPanelAddedOnRuntime.getBounds());
rest of code (posted here) coudn't be works,
for better help sooner post an SSCCE, short, runnable, compilable
EDIT
works, again you would need to re_read my above 3rd. point
import java.awt.Dimension;
import java.awt.Font;
import java.awt.GridLayout;
import java.util.Vector;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
public class ScrollTesting {
private JPanel panel = new JPanel();
private JScrollPane scrollPane = new JScrollPane(panel);
private Vector<JTextField> fieldsVector = new Vector<JTextField>();
private Dimension preferredSize = new Dimension(400, 40);
private Font font = new Font("Tahoma", 1, 28);
public ScrollTesting() {
panel.setLayout(new GridLayout(100, 1));
for (int i = 0; i < 100; i++) {
fieldsVector.addElement(new JTextField());
fieldsVector.lastElement().setPreferredSize(preferredSize);
fieldsVector.lastElement().setFont(font);
panel.add(fieldsVector.lastElement());
}
JFrame frame = new JFrame();
frame.setSize(400, 300);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(scrollPane);
frame.setVisible(true);
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
JTextField tf = (JTextField) fieldsVector.lastElement();
panel.scrollRectToVisible(tf.getBounds());
}
});
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
ScrollTesting scrollTesting = new ScrollTesting();
}
});
}
}
Upvotes: 5