我需要提供一条在屏幕上显示5秒钟的信息消息,在此期间,用户无法关闭对话框。规范清楚地表明该对话框不应具有任何按钮。有没有一种方法可以使用JoptionPane.showMessageDialog,而对话框没有按钮?
如何使用showOptionDialog
,也许不是showMessageDialog
,但是当我们没有按钮或位置来输入文本时,情况也是一样(缺点是可以由用户关闭):
<< img src =“ https://image.soinside.com/eyJ1cmwiOiAiaHR0cHM6Ly9pLnN0YWNrLmltZ3VyLmNvbS9GVzd5ai5wbmcifQ==” alt =“在此处输入图像描述”>
JOptionPane.showOptionDialog(null, "Hello","Empty?", JOptionPane.DEFAULT_OPTION,JOptionPane.INFORMATION_MESSAGE, null, new Object[]{}, null);
UPDATE
这是另一种方式,它使用JOptionPane
和JDialog
(甚至更好,因为它无法被用户关闭):
final JOptionPane optionPane = new JOptionPane("Hello world", JOptionPane.INFORMATION_MESSAGE, JOptionPane.DEFAULT_OPTION, null, new Object[]{}, null);
final JDialog dialog = new JDialog();
dialog.setTitle("Message");
dialog.setModal(true);
dialog.setContentPane(optionPane);
dialog.setDefaultCloseOperation(JDialog.DO_NOTHING_ON_CLOSE);
dialog.pack();
//create timer to dispose of dialog after 5 seconds
Timer timer = new Timer(5000, new AbstractAction() {
@Override
public void actionPerformed(ActionEvent ae) {
dialog.dispose();
}
});
timer.setRepeats(false);//the timer should only go off once
//start timer to close JDialog as dialog modal we must start the timer before its visible
timer.start();
dialog.setVisible(true);
看起来像大卫想出了一些东西来满足您对“无按钮”的要求。
话虽如此,听起来您可能需要澄清您的真正要求。确实需要对话框无法关闭,还是没有按钮可以关闭对话框? JOptionPane和JDialog具有一个类似于标准窗口的关闭按钮。
我使用上面的一些代码创建了一个“方法”来进行外部调用。因此,这可以允许多个弹出窗口。我的版本允许更改消息类型,标题,显示时间,屏幕位置,文本,并提供了更改文本字体和颜色的示例。
/*
* LabelDemo.java contains a method that allow multiple popups. This version allows
* changing the message type, title, display time, screen placement, text and
* provides examples of changing the font and color of the text message.
*/
package components;
import java.awt.event.ActionEvent;
import javax.swing.AbstractAction;
import javax.swing.JDialog;
import javax.swing.JOptionPane;
import javax.swing.Timer;
/*
* LabelDemo.java
*
*/
public class LabelDemo {
public LabelDemo() {
}
public static void main(String[] args) {
TextDisplayPopup("1st popup", "<html><font size=11 color=blue>information type",
6, 50, 105, JOptionPane.INFORMATION_MESSAGE);
TextDisplayPopup("2nd popup", "<html><font size=15 color=red>ERROR TYPE\n"
+ "<html><font size=6 color=green>2nd line with long sentence for checking"
+ " popup box dynamic sizing.",
10, 240, 240, JOptionPane.ERROR_MESSAGE);
}
public static void TextDisplayPopup(String strTitle, String strText,
int iDelayInSeconds, int iX_Location, int iY_Location, int iMessageType) {
final JOptionPane optionPane = new JOptionPane(strText,
iMessageType, JOptionPane.DEFAULT_OPTION,
null, new Object[]{}, null);
final JDialog dialog = new JDialog();
dialog.setTitle(strTitle);
dialog.setModal(false);
dialog.setContentPane(optionPane);
dialog.setDefaultCloseOperation(JDialog.DO_NOTHING_ON_CLOSE);
dialog.pack();
dialog.setLocation(iX_Location, iY_Location);
//create timer to dispose of dialog after, iDelayInSeconds, seconds
Timer timer = new Timer(iDelayInSeconds*1000, new AbstractAction() {
@Override
public void actionPerformed(ActionEvent ae) {
dialog.dispose();
}
});
timer.setRepeats(false); // one-time use timer
// timer removes dialog after iDelayInSeconds
timer.start();
dialog.setVisible(true);
System.out.println("end of test");
}
}
输出:1st popup
我不认为您可以使用JOptionPane,因为如果我没记错的话,它们至少总是有一个按钮。但是您可以使用例如this之类的启动面板,也可以使用普通面板并在其中运行线程。喜欢
public class TestFrame extends JFrame implements Runnabel{
private Thread thread;
private CallerClass c; //Class which built this frame
public TestPanel(CallerClass cc){
this.c = cc;
this.thread = null;
//Window can't be closed on (x)
this.setDefaultCloseOperation(DO_NOTHING_ON_CLOSE);
//some things you put into your frame
//...
this.setVisible(true);
}
public synchronized void start(){
if (thread == null){
thread = new Thread(this);
thread.start();
}
@Override
public void run() {
try{
Thread.sleep(5000);
}catch(InterruptedException e){ }
this.setVisible(false);
this.c.destroyFrame();
this.stop();
}
}
Where destroyFrame()是类中的e方法,用于构建该面板以销毁它(将其设置为null或其他东西),并且如果您不希望其余图形被创建,则必须使用SwingUtilities.invokeLater(new TestFrame(this))
创建此Frame。冻结。