調用日歷的問題

Question

我只是問Java怎么實現像VB那樣調用出日期選擇對話框，難道只有自己寫個類嗎？JBUILDER中沒有已經實現的控件嗎？

Answer 1

jb里面只有个可供选择的很难看的一个日期选择对话框JCDateChooser
需要import com.klg.jclass.util.calendar.*;
你自个试试看就知道了

Answer 2

你可以通过ｊｂ的Design将这这个控件添加到当前Swing栏里面去的说，
在工具包Sitraka JClass Gauge 4.5.1里面，属于javabeans，
所在目录com/klg/jclass/util/calendar/resources/JCDateChooser

Answer 3

import java.awt.*;
import java.util.*;
import javax.swing.*;
import java.awt.event.*;
import javax.swing.border.*;
import java.lang.*;public class DatePopup extends JDialog implements java.awt.event.ActionListener
{
private JPanel mPanel1  = new JPanel();
private JPanel mPanel2  = new JPanel();
private JPanel mPanel3  = new JPanel();
private JPanel mPanel4  = new JPanel();
private JButton mNewButton;
private JTextField mText;
private int mDay;
private int mMonth;
private int mYear;
private int mTheDate;
private int i  = 0;
private int j  = 0; public DatePopup(JTextField pText)
{
super(new JFrame(),"日期选择",true);
this.mText = pText;
try
{
DatePopupInit();
pack();
}
catch(Exception e)
{
e.printStackTrace();
}
} /**
 * 控件的初始化方法。
 */
private void DatePopupInit()
{
//设置主窗口布局
Container contentPane = getContentPane();
contentPane.setLayout(new BorderLayout());
mPanel1.setLayout(new BorderLayout());
mPanel1.setBorder(new TitledBorder(BorderFactory.createLineBorder(Color.white,1),"日期选择")); Calendar nowCalendar = Calendar.getInstance();
this.mTheDate = nowCalendar.get(Calendar.DAY_OF_WEEK);
this.mDay = nowCalendar.get(Calendar.DAY_OF_MONTH);
this.mMonth = nowCalendar.get(Calendar.MONTH);
this.mYear = nowCalendar.get(Calendar.YEAR); //设置mPanel2
JComboBox comboMonth = new JComboBox();
comboMonth.setActionCommand("MonthSelect");
for(i=1;i<=12;i++)
{
comboMonth.addItem(i+"月");
if(i==(this.mMonth+1))
{
comboMonth.setSelectedItem(i+"月");
}
}
comboMonth.addActionListener(this);
JComboBox comboYear = new JComboBox();
comboYear.setActionCommand("YearSelect");
for(i=1900;i<=2050;i++)
{
comboYear.addItem(i+"年");
if(i==this.mYear)
{
comboYear.setSelectedItem(i+"年");
}
}
comboYear.addActionListener(this);
mPanel2.setLayout(new FlowLayout());
mPanel2.add(comboMonth);
mPanel2.add(comboYear);
mPanel1.add(mPanel2,BorderLayout.NORTH); //设置mPanel3
mPanel3.setLayout(new GridLayout(7,7));
mPanel3.add(new JLabel("日",SwingConstants.CENTER));
mPanel3.add(new JLabel("一",SwingConstants.CENTER));
mPanel3.add(new JLabel("二",SwingConstants.CENTER));
mPanel3.add(new JLabel("三",SwingConstants.CENTER));
mPanel3.add(new JLabel("四",SwingConstants.CENTER));
mPanel3.add(new JLabel("五",SwingConstants.CENTER));
mPanel3.add(new JLabel("六",SwingConstants.CENTER));
Calendar calendar1 = Calendar.getInstance();
calendar1.set(this.mYear,this.mMonth+1,1);
Calendar calendar2 = Calendar.getInstance();
calendar2.set(this.mYear,this.mMonth,1);
int daysOfMonth;
if(this.mMonth==11)
{
daysOfMonth = 31;
} else {
daysOfMonth = calendar1.get(Calendar.DAY_OF_YEAR) - calendar2.get(Calendar.DAY_OF_YEAR);
}
int firstDay = calendar2.get(Calendar.DAY_OF_WEEK);
for(i=1;i<43;i++)
{
if(((i==firstDay)||(j!=0))&&(j<daysOfMonth))
{
j++;
mNewButton = new JButton((new String()).valueOf(j));
if(j==this.mDay)
{
mNewButton.setSelected(true);
mNewButton.setEnabled(false);
mNewButton.setBackground(new Color(84,215,4));
}
mNewButton.addActionListener(this);
mPanel3.add(mNewButton);
} else {
mPanel3.add(new JLabel());
}
}
mPanel1.add(mPanel3,BorderLayout.CENTER); //设置mPanel4
JButton confirmButton = new JButton("确定");
confirmButton.setActionCommand("confirm");
confirmButton.addActionListener(this);
JButton cancelButton = new JButton("取消");
cancelButton.setActionCommand("cancel");
cancelButton.addActionListener(this);
mPanel4.setLayout(new FlowLayout());
mPanel4.add(confirmButton);
mPanel4.add(cancelButton); //设置contentpane
contentPane.add(mPanel1,BorderLayout.CENTER);
contentPane.add(mPanel4,BorderLayout.SOUTH);
} /**
 * 监听事件响应。
 */
public void actionPerformed(ActionEvent e)
{
String cmd = e.getActionCommand();
Object obj = e.getSource();
String temp = "";
if(cmd.equals("MonthSelect"))
{
JComboBox comMonth = (JComboBox)obj;
temp = comMonth.getSelectedItem().toString();
temp = temp.substring(0,temp.length()-1);
int tempMonth = Integer.parseInt(temp);
this.mMonth = tempMonth-1;
mypaint();
} else if(cmd.equals("YearSelect")) {
JComboBox comYear = (JComboBox)obj;
temp = comYear.getSelectedItem().toString();
temp = temp.substring(0,4);
int tempYear = Integer.parseInt(temp);
this.mYear = tempYear;
mypaint();
} else if(cmd.equals("confirm")) {
String pFinalDate = "";
if(this.mMonth<9) {
pFinalDate = this.mYear + ":0" +(this.mMonth+1);
} else {
pFinalDate = this.mYear + ":" + (this.mMonth+1);
}
if(this.mDay<10) {
pFinalDate =  pFinalDate + ":0"+ this.mDay;
} else {
pFinalDate =  pFinalDate + ":"+ this.mDay;
}
this.mText.setText(pFinalDate);
this.dispose();
} else if(cmd.equals("cancel")) {
this.dispose();
} else {
int tempDay = Integer.parseInt(cmd);
this.mDay = tempDay;
mypaint();
//System.out.println(cmd);
}
} /**
 * 控件重新布局方法。
 */
private void mypaint()
{
this.invalidate();
mPanel3.removeAll();
mPanel3.setLayout(new GridLayout(7,7));
mPanel3.add(new JLabel("日",SwingConstants.CENTER));
mPanel3.add(new JLabel("一",SwingConstants.CENTER));
mPanel3.add(new JLabel("二",SwingConstants.CENTER));
mPanel3.add(new JLabel("三",SwingConstants.CENTER));
mPanel3.add(new JLabel("四",SwingConstants.CENTER));
mPanel3.add(new JLabel("五",SwingConstants.CENTER));
mPanel3.add(new JLabel("六",SwingConstants.CENTER));
Calendar calendar1 = Calendar.getInstance();
calendar1.set(this.mYear,this.mMonth+1,1);
Calendar calendar2 = Calendar.getInstance();
calendar2.set(this.mYear,this.mMonth,1);
int daysOfMonth;
if(this.mMonth==11)
{
daysOfMonth = 31;
} else {
daysOfMonth = calendar1.get(Calendar.DAY_OF_YEAR) - calendar2.get(Calendar.DAY_OF_YEAR);
}
int firstDay = calendar2.get(Calendar.DAY_OF_WEEK);
j = 0;
for(i=1;i<43;i++)
{
if(((i==firstDay)||(j!=0))&&(j<daysOfMonth))
{
j++;
mNewButton = new JButton((new String()).valueOf(j));
if(j==this.mDay)
{
mNewButton.setSelected(true);
mNewButton.setEnabled(false);
mNewButton.setBackground(new Color(84,215,4));
}
mNewButton.addActionListener(this);
mPanel3.add(mNewButton);
} else {
mPanel3.add(new JLabel());
}
}
mPanel1.add(mPanel3,BorderLayout.CENTER);
this.validate();
}
}

Answer 4

调用方法：
            JTextField temp=new JTextField();//日期选好后显示的TEXT控件
            DatePopup pDialog = new DatePopup(temp);
            Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
            Dimension frameSize = pDialog.getSize();
            if (frameSize.height > screenSize.height) {
              frameSize.height = screenSize.height;
            }
           if (frameSize.width > screenSize.width) {
             frameSize.width = screenSize.width;
           }
           pDialog.setLocation((screenSize.width - frameSize.width) / 2, (screenSize.height - frameSize.height) / 2);
           pDialog.setVisible(true);