예를 들어 패널에 포커스가있는 경우에만 getInputMap(WHEN_IN_FOCUSED_WINDOW)
을 사용해보세요.
KeyStroke
문도 작동하지 않을 수도 있습니다. 대신 KeyStroke.getKeyStroke(KeyEvent.VK_1, 0, true)
을 사용하려고 시도하면 키 릴리스에 응답하는 KeyStroke
개체가 제공됩니다.
는
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import javax.swing.AbstractAction;
import javax.swing.ActionMap;
import javax.swing.InputMap;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.KeyStroke;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class TestKeyBindings04 {
public static void main(String[] args) {
new TestKeyBindings04();
}
public TestKeyBindings04() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new BorderLayout());
frame.add(new TestPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TestPane extends JPanel {
public TestPane() {
InputMap im = getInputMap(WHEN_IN_FOCUSED_WINDOW);
ActionMap am = getActionMap();
im.put(KeyStroke.getKeyStroke(KeyEvent.VK_1, 0, false), "pressed");
im.put(KeyStroke.getKeyStroke(KeyEvent.VK_1, 0, true), "released");
am.put("pressed", new AbstractAction() {
@Override
public void actionPerformed(ActionEvent e) {
System.out.println("Pressed");
}
});
am.put("released", new AbstractAction() {
@Override
public void actionPerformed(ActionEvent e) {
System.out.println("released");
}
});
setFocusable(true);
requestFocusInWindow();
}
@Override
public Dimension getPreferredSize() {
return new Dimension(200, 200);
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2d = (Graphics2D) g.create();
g2d.dispose();
}
}
}
좋아 예와 업데이트,하지만 난 이미 방법'위해서 setFocusable'(true)를 사용했다. 패널에 초점을 맞추지 않겠습니까? – Justin
시도해 보았습니다. 작동하지 않는 것 같습니다. – Justin
@gangqinlaohu Eclipse에이 코드를 삽입하면 actionPerformed를 덮어 써야한다고했습니다. 어쩌면 그렇게 될 것입니다. – syb0rg