java – ListSelectionListener被调用两次

class MyListListener implements ListSelectionListener {

      public void valueChanged (ListSelectionEvent e) {
           JList source = (JList) e.getSource();
           // do something
      }
}

JList myList = new JList (myModel);  
myList.addListSelectionListener (new MyListListener());

我做的很简单.我有一个JList.如果选择了列表中的项,则调用该处理程序.问题是当我从一个项目转到另一个项目时,处理程序被调用两次.如果第一个触发器传递原始选定项目,我可以看到使用,第二个触发器传递新项目.但是两次都传递了相同的新项目.那是什么意思？有没有办法阻止处理程序被调用两次？

解决方法:

e.getValueIsAdjusting正是您要找的.正如该方法的javadoc中所述

Returns whether or not this is one in a series of multiple events, where changes are still being made

标签：jlist,listselectionlistener,java,swing
来源： https://codeday.me/bug/20191007/1866356.html