Java 当我们单击custom时,如何关闭JCombobox的下拉列表?
我有一个JCombobox,当我从JCombobox的下拉列表中选择任何一个时,所选项目正在打开,但当我在其中一个下拉列表中单击“自定义”时,我必须打开一个daiolg,这里daiolg正在打开,但下拉列表没有关闭。我想在单击自定义时隐藏下拉列表。这是我的示例代码Java 当我们单击custom时,如何关闭JCombobox的下拉列表?,java,swing,jcombobox,Java,Swing,Jcombobox,我有一个JCombobox,当我从JCombobox的下拉列表中选择任何一个时,所选项目正在打开,但当我在其中一个下拉列表中单击“自定义”时,我必须打开一个daiolg,这里daiolg正在打开,但下拉列表没有关闭。我想在单击自定义时隐藏下拉列表。这是我的示例代码 private PropertyChangeSupport pcs;///here Iam using ActionListener and PopupMenuListener public void actionPerforme
private PropertyChangeSupport pcs;///here Iam using ActionListener and PopupMenuListener
public void actionPerformed(ActionEvent ae){
if(ae.getSource() instanceof ComboBox )
{
ComboBox comboBox = (ComboBox)ae.getSource();
Object selectedItem = comboBox.getSelectedItem();
if(selectedItem != null && (!selectedItem.equals("(Custom..)")))
{
pcs.firePropertyChange("ITEM_SELECTED",getCaption(),null);
}}}
public void popupMenuWillBecomeInvisible(PopupMenuEvent e)
{
ComboBox comboBox = (ComboBox)e.getSource();
Object repeatedSelectedItem = comboBox.getSelectedItem();
if(repeatedSelectedItem != null && repeatedSelectedItem.equals("(Custom..)"))
{
invokeCustomFilterDialog(repeatedSelectedItem, comboBox);
}}
private void invokeCustomFilterDialog(Object repeatedSelectedItem, ComboBox comboBox)
{
customFilterDialog.showDialog(); //here Iam opening dailog...
if(customFilterDialog.isCustomFilterAppliedFlag() == true)
{
pcs.firePropertyChange("ITEM_SELECTED",getCaption(),null);
}
else
{comboBox.setSelectedItem(lastSelectedItem);}}
public void popupMenuCanceled(PopupMenuEvent e)
{ }
public void popupMenuWillBecomeVisible(PopupMenuEvent e)
{
ComboBox comboBox = (ComboBox)e.getSource();
this.lastSelectedItem = comboBox.getSelectedItem();
}
combobox.getUI().setPopupVisible(combobox,false) 您可以使用
SwingUtilities.invokeLater
比如说
public void popupMenuWillBecomeInvisible(PopupMenuEvent e) {
final JComboBox comboBox = (JComboBox) e.getSource();
final Object repeatedSelectedItem = comboBox.getSelectedItem();
if (repeatedSelectedItem != null
&& repeatedSelectedItem.equals("(Custom..)")) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
invokeCustomFilterDialog(repeatedSelectedItem, comboBox);
}
});
}
}
要获得帮助,您需要提供一个简短的可运行示例()。我甚至不能编译代码,你已经发布了。