将 JMenuItem 的名称赋予它的 ActionListener [英] Giving JMenuItem's name to it's ActionListener

问题描述

我怎样才能给我的 JMenuItem 的名称，以便附加到它们的 ActionListener 会查看?

How can I give my JMenuItems names that the ActionListener attached to them will look at?

我有一个由单个 ActionListener 处理的菜单系统，并且这些菜单中的某些项目名称重复.这在用户端不是问题，因为很明显什么做了什么；事实上，如果他们有不同的名字，那就更容易混淆了.但是，最后，我想对每个项目进行唯一标记.

I've got a menu system that's handled by a single ActionListener, and some items in those menus duplicate names. This isn't a problem on the user end, because it's obvious what does what; in fact, it would be more confusing if they had different names. However, at my end, I want to label each item uniquely.

创建我的项目的部分如下所示:

The section that creates my items looks like this:

String label = getLabel(forThisItem);
JMenuItem item = new JMenuItem(label);
item.setName(parentMenu.getName() + "_" + label);
item.addActionListener(actionListener);
parentmenu.add(item);

之后使用 getName() 询问项目(并且在此方法的范围之外)给出了我给它的名称，正如它应该的那样，但是输出

Interrogating the item afterwards (and outside the scope of this method) with getName() gives the name I gave it, as it should, but the output of

public void actionPerformed(ActionEvent ae) {
    String actionPerformed = ae.getActionCommand();
    System.out.println("actionPerformed: " + actionPerformed);
}

是用户看到的可能重复的名称，由 label 指定，而不是我给它的唯一名称.

is the the, possibly duplicated, name that the user sees, specified by label, not the unique name that I gave it.

如何向 ActionListener 提供正确的信息?

How can I give the right information to the ActionListener?

推荐答案

你为什么不在菜单项上调用 setActionCommand.如果你调用 setActionCommand，而不是使用 setName，你应该在调用 getActionCommand

Why aren't you calling setActionCommand on the menuitem. Instead of using setName, if you call setActionCommand, you should get what you expect when you call getActionCommand

此外，它的标签，而不是标签.

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