我尝试了多种解决方案,但没有任何东西适合我! 我想在框架的中心垂直对齐所有内容。
window=new JFrame();
window.setSize(520, 380);
window.setTitle("Menu");
window.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
window.setLayout(new FlowLayout());
label=new JLabel("Settings",JLabel.CENTER);
controlPanel= new JPanel();
controlPanel.setLayout(new GridLayout(10,1));
controlPanel.add(button1);//these are example components
controlPanel.add(button2);
controlPanel.add(button3);
window.add(label);
window.add(controlPanel);
window.setVisible(true);
我希望将“设置”这个词作为标题,并在其下面放置我的组件。 我能够使用gridLayout而不是FlowLayout来执行此操作,但标题占据了屏幕的一半(我不想要那样)。 抱歉这样的基本问题,但我是java的新手:)
答案 0 :(得分:1)
您可以使用GridBagLayout
,例如......
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.border.EmptyBorder;
public class TestLayout {
public static void main(String[] args) {
new TestLayout();
}
public TestLayout() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new TestPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TestPane extends JPanel {
public TestPane() {
setBorder(new EmptyBorder(50, 50, 50, 50));
setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridwidth = GridBagConstraints.REMAINDER;
gbc.fill = GridBagConstraints.HORIZONTAL;
add(new JButton("Apples"), gbc);
add(new JButton("Pears"), gbc);
add(new JButton("Organges"), gbc);
add(new JButton("Grapes"), gbc);
}
}
}
请记住,有了它的灵活性,就会带来复杂性。有关详细信息,请查看How to Use GridBagLayout