[英]Add multiple elements to JList
I need to save on a jList
multiple values coming from a specific source. 我需要在
jList
上保存来自特定源的多个值。
Inside the for cycle i generate both a jComboBox
and bot a Model
for a Jlist
declared above in code (so not visible in this piece of code) What i don't understand, maybe it's a simple problem, is why the jComboBox has all elements taken from the array channelId
instead Jlist saves only the last element. 在for循环中我生成了一个
jComboBox
和bot一个Model
用于代码中的上面声明的Jlist
(因此在这段代码中不可见)我不明白,也许这是一个简单的问题,这就是为什么jComboBox具有所有元素取自数组channelId
而不是Jlist只保存最后一个元素。
DefaultListModel jList1Model;
private void printChannelData(Channel channel, String nodeName) {
String[] channelId = { channel.getId()+" - "+nodeName/*+" - "+channel.getName()*/};
jList1Model = new DefaultListModel();
for (int i=0; i < channelId.length; i++) {
//Adds element to the Single Channel Loading ComboBox
channelIdComboBox.addItem(channelId[i]);
//Adds elements to the Multiple Channel Loading ComboBox
jList1Model.addElement(channelId[i]);
}
jList1.setModel(jList1Model);
}
You recreate the ListModel
every time you call printChannelData()
(probably in a loop somewhere). 每次调用
printChannelData()
都可以重新创建ListModel
(可能在某个循环中)。 Create the ListModel
outside, and inside the method just add to the model. 在外部创建
ListModel
,并在方法内部添加到模型中。
And channelId
is a String[]
, but only contains one item. 而
channelId
是一个String[]
,但只包含一个项目。 I don't know what you were trying to do with it. 我不知道你想用它做什么。
DefaultListModel<String> jList1Model = new DefaultListModel<>();
// probably a loop where you call printChannelData()
List<ChannelData> channels = ...;
for (ChannelData cd : channels) {
printChannelData(cd, "whatever");
}
private void printChannelData(Channel channel, String nodeName) {
String channelId = channel.getId() + " - " + nodeName + " - " + channel.getName();
for (int i=0; i < channelId.length; i++) {
//Adds element to the Single Channel Loading ComboBox
channelIdComboBox.addItem(channelId[i]);
//Adds elements to the Multiple Channel Loading ComboBox
jList1Model.addElement(channelId[i]);
}
jList1.setModel(jList1Model);
}
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