Java检测鼠标长按

Question

如果用户在 JList 组件上按下超过 3 秒，是否有任何方法可以捕获事件？

我发现困难的部分是事件需要在用户松开鼠标左键之前触发。 (这可以通过一对 mousePressed 和 mouseReleased 轻松完成)

Answer 1

这是我在类似情况下使用的方法:

public class Player implements Runnable, MouseListener
{
    public void mousePressed(MouseEvent e)
    {
        holding = true;
        thread = new Thread(this);
        thread.start();
    }

    public void mouseReleased(MouseEvent e)
    {
        holding = false;
        System.out.println("Held for: "+seconds);
    }
    public void mouseClicked(MouseEvent e){}

    public void run()
    {
        try
        {
            while(holding)
            {
                seconds++;
                // put some code here
                if(seconds==3)
                {
                    holding = false;
                    System.out.println("Held for maximum time!");
                }
            }
        }catch(Exception e){e.printStackTrace();}

    private boolean holding;
    private int seconds;
    private Thread thread;
}

通过调用 label.addMouseListener(new Player()); 将其添加到您的 JLabel;