java 为树中的节点添加动作侦听器
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adding action listener for the node in a tree
提问by Suhail Gupta
I am unable to add action listener to a particular node in the tree. This is a tree that i've constructed :
我无法将动作侦听器添加到树中的特定节点。这是我构建的一棵树：
I want to register a separate listener for each node . Now i have registered a listener on JTree. so, whenever i click on any portion of treethe listener method starts it's work. (i.e now i have a common listener )What i want is when i click on audioa listener registered to hear audio click, should start it's work and the same goes for video. How can i do that ?
我想为每个节点注册一个单独的侦听器。现在我已经注册了一个监听器JTree。因此，每当我单击tree侦听器方法的任何部分时，它都会开始工作。（即现在我有一个共同的听众）我想要的是当我点击音频时注册的听众可以听到音频点击，应该开始它的工作，视频也是如此。我怎样才能做到这一点 ？
This is how i have registered so far :
这是我到目前为止注册的方式：
jTree1.addTreeSelectionListener(new javax.swing.event.TreeSelectionListener() {
public void valueChanged(javax.swing.event.TreeSelectionEvent evt) {
jTree1ValueChanged(evt);
}
});
public void jTree1ValueChanged( TreeSelectionEvent tse ) {...}
回答by oliholz
What about this. Or do you have special PathComponents?
那这个呢。或者你有特殊的 PathComponents 吗？
public void jTree1ValueChanged( TreeSelectionEvent tse ) {
String node = tse.getNewLeadSelectionPath().getLastPathComponent().toString();
if( node.equals("audio") ) {
// play audio
} else if( node.equals("video") ) {
// play video
}
}
回答by Mohayemin
You cannot add an event listener to tree-node because the class representing the tree-node is not a Component.
您不能向树节点添加事件侦听器，因为表示树节点的类不是组件。
