java - actionPerformed() 用于按住按钮

Question

现在我有：

panel.getZoomButton().addActionListener(new ActionListener()
{
    @Override
    public void actionPerformed(ACtionEvent e)
    {
        zoom();
    }
}

每次按下缩放按钮时都会调用它。zoom()如果按住缩放按钮，如何更改它以便连续调用？

Answer 1

You will need to use a MouseListener and override the mousePressed() method. There you can use a Timer or something similar to measure the time, the button has been pressed, in order to calculate your zoom.

Perhaps this question helps you with that: Java MouseEvent, check if pressed down

Answer 2

• 使用Swing Action（最可扩展的抽象）而不是ActionListener，您可以设置isEnabled，切换到false value直到所有事件完成

• 或添加Swing TimerBoolean以重置true value

• 有可能setMultiClickThreshhold(long threshhold)，但仅适用于 MouseEvents，此方法不会对键盘触发KeyBindings(ENTER和) 做出反应TAB