【发布时间】:2023-12-22 06:10:01
【问题描述】:
我正在尝试编写一些代码,允许用户通过单击 JTable 中的布尔单元格来填写文本字段。
我可以让程序将表格中的数据输入到文本字段中,但我目前的执行方法涉及一个 JOptionPane,它出于某种奇怪的原因阻止表格更改复选框值(即检查 -框不会从黑色变为勾选)。不仅如此,选择不会更新,因此最后一列中的值保持为 false,即使选择应将其切换为 true。
我认为这可能与 JOptionPane 以某种方式覆盖选择事件有关,但我对 JOptionPane 对象的了解还不够,无法说明如何操作。我的代码是:
table.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
ListSelectionModel selectionModel = table.getSelectionModel();
selectionModel.addListSelectionListener(new ListSelectionListener() {
public void valueChanged(ListSelectionEvent e) {
ListSelectionModel lsm = (ListSelectionModel) e.getSource();
if (lsm.isSelectionEmpty()) {
//no rows are selected do nothing
} else {
//First find the row clicked
int selectedRow = lsm.getLeadSelectionIndex();
/*
* put a popup here to ask the user which peak to associate
* the energy with.
*/
System.out.println(selectedRow);
//Get user to associate with a peak
availablePeaks = getAvailablePeaks();
String returnVal = (String) JOptionPane.showInputDialog(
null,
"Select the peak:",
"Peak Matching",
JOptionPane.QUESTION_MESSAGE,
null,
availablePeaks, null);
System.out.println(returnVal);
//Determine the selection
int index = 0;
for (int i = 0; i < availablePeaks.length; i++) {
if (availablePeaks[i] == returnVal) {
index = i;
} else {
}
}
//Set the peak value in the peak specifier to the energy in the row
double energy = (Double) table.getValueAt(selectedRow, 0);
System.out.println(energy);
frame.getPeakSetter().getPeakSpecifiers()[index].setEnergy(energy);
frame.getPeakSetter().getPeakSpecifiers()[index].getTextField().setText("" + energy);
}
}
});
有谁知道为什么ListSelectionListener 中的JOptionPane 会阻止表格更新复选框?
谢谢!
【问题讨论】:
标签: java swing jtable joptionpane