Java JList 元素上的双击事件
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Double-click event on JList element
提问by Lobo
I have a JListwith a DefaultListModel.
我有JList一个DefaultListModel.
How I can make an item in a JListreact to double-click event?
如何使项目JList对双击事件做出反应？
采纳答案by Mohamed Saligh
String[] items = {"A", "B", "C", "D"};
JList list = new JList(items);
list.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent evt) {
JList list = (JList)evt.getSource();
if (evt.getClickCount() == 2) {
// Double-click detected
int index = list.locationToIndex(evt.getPoint());
} else if (evt.getClickCount() == 3) {
// Triple-click detected
int index = list.locationToIndex(evt.getPoint());
}
}
});
回答by camickr
I know you have a simple solution, but you may want to check out List Actionfor a more general solution that will allow you to use the mouse as well as the key board. Proper GUI design should allow the use to use either approach.
我知道您有一个简单的解决方案，但您可能想查看List Action以获得更通用的解决方案，该解决方案将允许您使用鼠标和键盘。正确的 GUI 设计应该允许使用任何一种方法。
回答by SandroMarques
(based on Mohamed Saligh, the accepted response)
（基于 Mohamed Saligh，已接受的回复）
If you are using NetBeans
如果您使用的是 NetBeans
Select the JList > Events window > mouseClicked
选择 JList > 事件窗口 > mouseClicked
private void jListNicknamesMouseClicked(java.awt.event.MouseEvent evt) {
JList list = (JList)evt.getSource();
if (evt.getClickCount() == 2) {
int index = list.locationToIndex(evt.getPoint());
System.out.println("index: "+index);
}
}
