如何以编程方式将 ActionEvent 发送到 JButton?

2022-01-15 00:00:00 event-handling java swing actionlistener jbutton

如何以编程方式将 ActionEvent(例如按钮按下/ACTION_PERFORMED)发送到 JButton?

How do I programmatically send an ActionEvent (eg button pressed/ACTION_PERFORMED) to a JButton?

我知道:

button.doClick(0);

和

button.getModel().setArmed(true);
button.getModel().setPressed(true);
button.getModel().setPressed(false);
button.getModel().setArmed(false);

但是不能直接给它发送一个ActionEvent吗?

But isn't it possible to directly send it an ActionEvent?

这不是生产代码，只是一个小小的个人实验.

This is not production code, it's just a little personal experiment.

推荐答案

可以获取一个按钮的ActionListener，然后直接调用actionPerformed方法.

You can get a button's ActionListeners, and then call the actionPerformed method directly.

ActionEvent event;
long when;

when  = System.currentTimeMillis();
event = new ActionEvent(button, ActionEvent.ACTION_PERFORMED, "Anything", when, 0);

for (ActionListener listener : button.getActionListeners()) {
    listener.actionPerformed(event);
}

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