java - 使用网格布局和获取组合框

Question

我有一个面板，每行都有多个组合框，我需要从中获取组合框值。

这是我的代码:

gridPanel = new JPanel();
        grid = new GridLayout(0,1);
        gridPanel.setLayout(grid);

        gridPanel.add(createChildPanel());

和createChildPanel方法:

JComboBox columnACB = new JComboBox();
        columnACB.addItemListener(this);

感谢您的解决方案:这就是我们使用的

Component[] comps = gridPanel.getComponents();
             for (Component comp : comps) {
                 if (comp instanceof JPanel) {
                     JPanel panel = (JPanel) comp;
                     Component[] comps1 = panel.getComponents();
                     for (Component comp1 : comps1) {
                         if (comp1 instanceof JComboBox)
                     {
                     JComboBox combp = (JComboBox) comp1;
                     String colA = combp.getSelectedItem().toString();
                     System.out.println("colA"+colA);
                     }
                         else if  (comp1 instanceof JTextField)
                         {
                             JTextField combp = (JTextField) comp1;
                             String colA = combp.getText();
                             System.out.println("colA"+colA);
                             }
                     }

                 }
             }

Answer 1

您可以使用 getComponents() 迭代面板中的组件.

Component[] comps = gridPanel.getComponents();
for (Compoent comp : comps) {
    if (comp instanceof JComboBox) {
        JComboBox combo = (JComboBox) comp;
        Object selected = combo.getSelectedItem();
    }
}