移动图片后坐标的获取问题

Question

     将图片添加到JLabel上，然后拖动JLabel在面板上移动，能捕获它移动后的坐标（即jLabel移动后新的坐标），怎样才能将新获得的这个坐标记录下来，将来以便在其他地方调用。希望赐教，不胜感激。
下面是代码，已经实现移动和得到新的坐标。/**
 * @(#)ImageMove.java
 *
 *
 * @author 
 * @version 1.00 2009/10/14
 */import java.awt.Color;
import java.awt.Point;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.net.URL;
import javax.swing.BorderFactory;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;public class ImageMove {
  static Point p; //Jlabel随鼠标移动后的坐标
      static int x,y;
      public static void main(String[] args) throws Exception{
         //int x,y;
          JFrame f = new JFrame();
          f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          f.getContentPane().setLayout(null);
          f.setBounds(0,0,400,400);
          Icon icon = new ImageIcon(new URL("http://img.baidu.com/img/logo-zhidao.gif"));
          JLabel l = new JLabel(icon);
          l.setSize(icon.getIconWidth(),icon.getIconHeight());
          l.setBorder(BorderFactory.createLineBorder(Color.red));
          f.getContentPane().add(l);
          f.setVisible(true);
             
          l.addMouseListener(new MouseAdapter(){
               public void mousePressed(MouseEvent e){
                x = e.getX();
                y = e.getY();
              }
          });
          
          l.addMouseListener(new MouseAdapter(){
             public void mouseReleased(MouseEvent e){
                 JLabel l = (JLabel)e.getSource();
                 p = new Point(l.getLocation()) ;//这里获取到Jlabel新的坐标点
                 System.out.println (p);
             }
          });
         
          l.addMouseMotionListener(new MouseMotionListener(){
               public void mouseDragged(MouseEvent e) {
                   JLabel l = (JLabel)e.getSource();
                   l.setLocation(l.getX()+ e.getX()-x,l.getY()+ e.getY()-y);
                }      
               public void mouseMoved(MouseEvent e) {
                   throw new UnsupportedOperationException("Not supported yet.");
               }
               });     
      }  
       //System.out.println (p);
       //想要在这里能获得移动Jlabel后鼠标释放后的坐标，以便将来在其他程序里能调用这个坐标值
       //但是这里的p值输出不出来
 } 

Answer 1

看看MouseMotionListener这个接口
里面有    public void mouseDragged(MouseEvent e) {
        //e.getX(),e.getY()就能拿到拖动到的位置了
     }

Answer 2

l.addMouseListener(new MouseAdapter() {
public void mouseReleased(MouseEvent e){
JLabel l = (JLabel) e.getSource();
p = new Point(l.getLocation());// 这里获取到Jlabel新的坐标点
x = p.x;//得到移动后的x坐标
y = p.y;//得到移动后的y坐标
System.out.println(p);
}
});

Answer 3

你的打印语句放错地方了
要放到main方法里System.out.println("x is :"+ImageMove.x + " y is :"+ImageMove.y);

Answer 4

   不行啊 放到Main里输出的是 0，0

Answer 5

放到main里当然是0,0的啊
你的mouse都没有动一开始.

Answer 6

    实现implements MouseListener public void mouseClicked(MouseEvent e) {
//打印x、y坐标
System.out.println(e.getX());
System.out.println(e.getY());
}

Answer 7

其实我的意思是这样的 
   有一个add（int x ，int y）{}方法；
   在这个main函数里调用add方法，里面传的参数是新获得的坐标点的值

Answer 8

再说明白点 我的程序是这样 我做了个图片移动的函数int xPoint;
int yPoint;//移动图片是鼠标在JLabel上的坐标；
private  void move(String tObject,int x,int y){
       int w = tObject.indexOf("[");
       String componentClass = tObject.substring(0,w);
            String tPath = "d:\\" + componentClass + ".png";
            File tfile = new File(tPath);
       try{
             Image tImage = ImageIO.read(tfile);
             Icon icon = new ImageIcon(tImage);
             JLabel I = new JLabel(icon);
             I.setSize(icon.getIconWidth(),icon.getIconHeight());
             I.setBounds(x,y,icon.getIconWidth(),icon.getIconHeight());
             jPanel1.add(I);
             I.setVisible(true);    I.addMouseListener(new MouseAdapter(){
            @Override
         public void mousePressed(MouseEvent e){
           xPoint = e.getX();
           yPoint = e.getY();
        }
    });    I.addMouseListener(new MouseAdapter(){
                @Override
         public void mouseReleased(MouseEvent e){
              JLabel I = (JLabel)e.getSource();
              I.getLocation();   
         }
    });
    I.addMouseMotionListener(new MouseMotionListener(){
       public void mouseDragged(MouseEvent e) {
             JLabel I = (JLabel)e.getSource();
             I.setLocation(I.getX()+e.getX()-xPoint,I.getY()+e.getY()-yPoint);
          }      public void mouseMoved(MouseEvent e) {
              throw new UnsupportedOperationException("Not supported yet.");
            }
        });
    }catch(Exception e){
      }       
            //add（新的坐标点）；怎样将鼠标释放后新获得的坐标点传到里面去
}

Answer 9

为什么要在main方法里调用add这个方法呢?/**
 * @(#)ImageMove.java
 *
 *
 * @author 
 * @version 1.00 2009/10/14
 */import java.awt.Color;
import java.awt.Point;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.net.URL;
import javax.swing.BorderFactory;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;public class ImageMove {
      static Point p; //Jlabel随鼠标移动后的坐标
      static int x,y;
      public static void main(String[] args) throws Exception{
            //int x,y;
          JFrame f = new JFrame();
          f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          f.getContentPane().setLayout(null);
          f.setBounds(0,0,400,400);
          Icon icon = new ImageIcon(new URL("http://img.baidu.com/img/logo-zhidao.gif"));
          JLabel l = new JLabel(icon);
          l.setSize(icon.getIconWidth(),icon.getIconHeight());
          l.setBorder(BorderFactory.createLineBorder(Color.red));
          f.getContentPane().add(l);
          f.setVisible(true);
             
          l.addMouseListener(new MouseAdapter(){
                  public void mousePressed(MouseEvent e){
                x = e.getX();
                y = e.getY();
              }
          });
          
          l.addMouseListener(new MouseAdapter(){
                public void mouseReleased(MouseEvent e){
                       JLabel l = (JLabel)e.getSource();
                       p = new Point(l.getLocation()) ;//这里获取到Jlabel新的坐标点
                       new ImageMove().add(p.x, p.y); //这里不是把参数传出去了吗?
                }
          });
         
          l.addMouseMotionListener(new MouseMotionListener(){
               public void mouseDragged(MouseEvent e) {
                   JLabel l = (JLabel)e.getSource();
                   l.setLocation(l.getX()+ e.getX()-x,l.getY()+ e.getY()-y);
                }      
               public void mouseMoved(MouseEvent e) {
                     // throw new UnsupportedOperationException("Not supported yet.");
               }
               });     
      }  
      
      //你的add function
      public void add(int x,int y) {
        System.out.println("(" + x + "," + y + ")");
      }
      
          //System.out.println (p);
          //想要在这里能获得移动Jlabel后鼠标释放后的坐标，以便将来在其他程序里能调用这个坐标值
          //但是这里的p值输出不出来
 }

Answer 10

  可能我没说明白int xPoint;
int yPoint;//移动图片是鼠标在JLabel上的坐标；
private  void move(String tObjName,int x,int y){
       removeHashMapByKey(tObjName);
       System.out.println(LeftTopHashMap.size());
       int w = tObjName.indexOf("[");
       String componentClass = tObjName.substring(0,w);
            String tPath = "d:\\" + componentClass + ".png";
            File tfile = new File(tPath);
       try{
             Image tImage = ImageIO.read(tfile);
             Icon icon = new ImageIcon(tImage);
             JLabel I = new JLabel(icon);
             I.setSize(icon.getIconWidth(),icon.getIconHeight());
             I.setBounds(x,y,icon.getIconWidth(),icon.getIconHeight());
             jPanel1.add(I);
             I.setVisible(true);    I.addMouseListener(new MouseAdapter(){
            @Override
         public void mousePressed(MouseEvent e){
           xPoint = e.getX();
           yPoint = e.getY();
        }
    });    I.addMouseListener(new MouseAdapter(){
                @Override
         public void mouseReleased(MouseEvent e){
              JLabel I = (JLabel)e.getSource();
              int x = (int)I.getLocation().getX();// 相当于m  
              int y = (int)I.getLocation().getY();// 相当于n  看最后面的draw函数就明白了
              jPanel1.remove(I);
         }
    });
    I.addMouseMotionListener(new MouseMotionListener(){
       public void mouseDragged(MouseEvent e) {
             JLabel I = (JLabel)e.getSource();
             I.setLocation(I.getX()+e.getX()-xPoint,I.getY()+e.getY()-yPoint);
          }      public void mouseMoved(MouseEvent e) {
              throw new UnsupportedOperationException("Not supported yet.");
            }
        });
    }catch(Exception e){
      }       
      drawpIC(tObject，m，n）;// 这里想要传入心获得的坐标m ， n    
}