(输入图)UIManager.get("TextField.focusInputMap") 不起作用

Question

我尝试使用此代码在Mac OS上覆盖快捷键，但它不起作用。

if (System.getProperty("os.name", "").toUpperCase().startsWith("MAC")) {
    InputMap im = (InputMap) UIManager.get("TextField.focusInputMap");
    int MASK = Toolkit.getDefaultToolkit().getMenuShortcutKeyMask();
    im.put(KeyStroke.getKeyStroke(KeyEvent.VK_A, MASK), DefaultEditorKit.selectAllAction);
    im.put(KeyStroke.getKeyStroke(KeyEvent.VK_C, MASK), DefaultEditorKit.copyAction);
    im.put(KeyStroke.getKeyStroke(KeyEvent.VK_V, MASK), DefaultEditorKit.pasteAction);
    im.put(KeyStroke.getKeyStroke(KeyEvent.VK_X, MASK), DefaultEditorKit.cutAction);
}

但是，这确实...通过替换为特定的文本字段。

if (System.getProperty("os.name", "").toUpperCase().startsWith("MAC")) {
    InputMap im = (InputMap) txtOutput.getInputMap();
    int MASK = Toolkit.getDefaultToolkit().getMenuShortcutKeyMask();
    im.put(KeyStroke.getKeyStroke(KeyEvent.VK_A, MASK), DefaultEditorKit.selectAllAction);
    im.put(KeyStroke.getKeyStroke(KeyEvent.VK_C, MASK), DefaultEditorKit.copyAction);
    im.put(KeyStroke.getKeyStroke(KeyEvent.VK_V, MASK), DefaultEditorKit.pasteAction);
    im.put(KeyStroke.getKeyStroke(KeyEvent.VK_X, MASK), DefaultEditorKit.cutAction);
}

是否可以一次覆盖所有文本字段的快捷键？

我正在使用java swing。

Answer 1

不知道您现在在做什么，因为您没有向我们提供 MCVE，但您需要在创建摆动组件之前更改属性：

import java.awt.Toolkit;
import java.awt.event.KeyEvent;
import javax.swing.InputMap;
import javax.swing.JFrame;
import javax.swing.JTextField;
import javax.swing.KeyStroke;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.text.DefaultEditorKit;
public class Test {
    public static void main(String[] args) {
        SwingUtilities.invokeLater(() -> new Test());
    }
    Test() {
        try {
            UIManager.setLookAndFeel("javax.swing.plaf.nimbus.NimbusLookAndFeel");
        } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException e) {
            e.printStackTrace();
        }
        InputMap im = (InputMap) UIManager.get("TextField.focusInputMap");
        int MASK = Toolkit.getDefaultToolkit().getMenuShortcutKeyMask();
        im.put(KeyStroke.getKeyStroke(KeyEvent.VK_B, MASK), DefaultEditorKit.cutAction);
        JTextField tf = new JTextField("FF");
        JFrame frame = new JFrame();
        frame.add(tf);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.pack();
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
    }
}