高分求教,关于Drag and drop

lianyunzxp 2003-03-14 01:31:38
下面是我的一个测试程序关于Drag and drop的,在Jdk1.3下DropTargetListener的Drop方法始终都不被调用,但是在JDK1.4下却可以被正常调用,不知道为什么,开始的时候我用的是表格,我以为是表格的问题,但是后来我改成JTextField还是存在这个问题,请高手指教..........必重分相与.......还有请看http://expert.csdn.net/Expert/topic/1527/1527245.xml?temp=4.076785E-02分都给大家.回复者有分.

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.awt.dnd.*;
import java.awt.datatransfer.*;

/**
* <p>Title: </p>
* <p>Description: </p>
* <p>Copyright: Copyright (c) 2002</p>
* <p>Company: </p>
* @author unascribed
* @version 1.0
*/

public class FrmTest1 extends JFrame {
private JButton jButton1 = new JButton();
String sTbl1 = "tbl1";
String sTbl2 = "tbl2";
String[] sCols1 = {"a1","b1","c1","d","e","f","g","h","i"};
String[] sCols2 = {"a2","b2","c2"};
private JTextField jTable1 = new JTextField(sTbl1);
private JTextField jTable2 = new JTextField(sTbl2);
public FrmTest1() {
try {
jbInit();
//ウィンドウを中央に配置
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
Dimension frameSize = this.getSize();
if (frameSize.height > screenSize.height)
frameSize.height = screenSize.height;
if (frameSize.width > screenSize.width)
frameSize.width = screenSize.width;
this.setLocation((screenSize.width - frameSize.width) / 2, (screenSize.height - frameSize.height) / 2);
this.setVisible(true);
new DropTarget(jTable2, DnDConstants.ACTION_LINK,new TblDropListenre());
DragSource dragSource = DragSource.getDefaultDragSource();
dragSource.createDefaultDragGestureRecognizer(
jTable1, // component where drag originates
DnDConstants.ACTION_LINK, // actions
new TblGesture());
}
catch(Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
FrmTest1 frmTest1 = new FrmTest1();
frmTest1.show();
}
private void jbInit() throws Exception {
this.setSize(400,300);
jButton1.setBounds(new Rectangle(41, 29, 58, 16));
jButton1.setText("jButton1");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
jButton1_actionPerformed(e);
}
});
this.getContentPane().setLayout(null);
jTable1.setBounds(new Rectangle(37, 89, 136, 98));
jTable2.setBounds(new Rectangle(199, 87, 146, 102));
this.getContentPane().add(jButton1, null);
this.getContentPane().add(jTable1, null);
this.getContentPane().add(jTable2, null);
}

void jButton1_actionPerformed(ActionEvent e) {

}
class TblDragListener implements DragSourceListener{
public void dragEnter(DragSourceDragEvent dsde){
System.out.println("dragEnter(DragSourceDragEvent dsde)");
}
public void dragOver(DragSourceDragEvent dsde){
System.out.println("dragOver(DragSourceDragEvent dsde)");
}
public void dragDropEnd(DragSourceDropEvent dsde){
System.out.println("dragDropEnd(DragSourceDropEvent dsde)");
}
public void dropActionChanged(DragSourceDragEvent dsde){
System.out.println("dropActionChanged(DragSourceDragEvent dsde)");
}
public void dragExit(DragSourceEvent dse){
System.out.println("dragExit(DragSourceEvent dse)");
}
}
class TblDropListenre implements DropTargetListener{
public void dragEnter(DropTargetDragEvent dtde){
System.out.println("dragEnter(DropTargetDragEvent dtde)");
}
public void dragOver(DropTargetDragEvent dtde){
System.out.println("dragOver(DropTargetDragEvent dtde)");
}
public void dropActionChanged(DropTargetDragEvent dtde){
System.out.println("dropActionChanged(DropTargetDragEvent dtde)");
}
public void dragExit(DropTargetEvent dte){
System.out.println("dragExit(DropTargetEvent dte)");
}
public void drop(DropTargetDropEvent e){
System.out.println("drop(DropTargetDropEvent e)");
}
}
class TblGesture implements DragGestureListener{
public void dragGestureRecognized(DragGestureEvent dge){
System.out.println("dragGestureRecognized(DragGestureEvent dge)");
int i = 1;
DragData dd = new DragData(null,i);
StrDataTransfer dataTransfer = new StrDataTransfer(dd);
if(dataTransfer == null){
return;
}
dge.startDrag(DragSource.DefaultLinkDrop,dataTransfer,new TblDragListener());
}
}
class StrDataTransfer implements Transferable{
DragData data;
DataFlavor flavor;
public StrDataTransfer(JPanel tbl,int col){
this.data = new DragData(tbl,col);
try{
flavor = new DataFlavor(Class.forName("FrmTest1$DragData"),"DragData");
}catch(Exception e){
e.printStackTrace();
}
}
public StrDataTransfer(DragData df){
this.data = df;
try{
flavor = new DataFlavor(Class.forName("FrmTest1$DragData"),"DragData");
}catch(Exception e){
e.printStackTrace();
}
}
public Object getTransferData(DataFlavor flavor) {
if(isDataFlavorSupported(flavor))
return data;
return null;
}
public DataFlavor[] getTransferDataFlavors(){
DataFlavor[] df = {flavor};
return df;
}
public boolean isDataFlavorSupported(DataFlavor flavor1){
if(flavor1.equals(flavor))
return true;
return false;
}
}
class DragData{
private JPanel table;
private int iCol;
public DragData(JPanel tbl,int iCol){
this.table = tbl;
this.iCol = iCol;
}
public JPanel getTable(){
return table;
}
public int getCol(){
return iCol;
}
}
}
...全文
32 13 打赏 收藏 转发到动态 举报
写回复
用AI写文章
13 条回复
切换为时间正序
请发表友善的回复…
发表回复
bjzhanghao 2003-03-15
  • 打赏
  • 举报
 回复
不会吧……555哭死了
lianyunzxp 2003-03-14
  • 打赏
  • 举报
 回复
:)
0,90,10,0,100,0,0,0,0,0
贴子回复次数大于跟给分次数
这是什么意思呀?
怎么不让我结帖呀.....
lianyunzxp 2003-03-14
  • 打赏
  • 举报
 回复
:)
lianyunzxp 2003-03-14
  • 打赏
  • 举报
 回复
终于搞定了,呵呵
原来是传递的数据类型必须实现序列化接口
让DragData类implements Serializable就可以了
Faint............Java真是变态.....
好在JDK1.4中已经正常了.
谢谢bjzhanghao(八进制)老兄鼎立相帮助............
结贴.
bjzhanghao 2003-03-14
  • 打赏
  • 举报
 回复
我觉得就是拖动源的问题，你试没试过把拖动源里的东西拖到word？
左边的框一动鼠标就异常啊，好象是数据类型不对。
lianyunzxp 2003-03-14
  • 打赏
  • 举报
 回复
拖动源好象没什么问题的,因为他的方法都正确的调用了
是的,不好意思,没改以前从ie里拖确实不触发drop,因为我只接受Link操作,毛病到底出在哪呢?哎~~~~~~~~~~~~~~~~~~~~
bjzhanghao 2003-03-14
  • 打赏
  • 举报
 回复
不对啊，没改以前从ie里拖也不触发drop，而且拖动的时候鼠标是禁止放下的图标。
如果从左边拖不到右边，那么是拖动源的问题。
lianyunzxp 2003-03-14
  • 打赏
  • 举报
 回复
如果是从IE选段文字拖到右边那个table里,这不改就是这个结果的
你试过从左边拖到右边吗?
还是不行的....,Drop还是出不来的
bjzhanghao 2003-03-14
  • 打赏
  • 举报
 回复
改过的文件还给你，从IE选段文字拖到右边那个table里是上面的结果，鼠标指针是带加号的。jdk1.3.1

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.awt.dnd.*;
import java.awt.datatransfer.*;

/**
* <p>Title: </p>
* <p>Description: </p>
* <p>Copyright: Copyright (c) 2002</p>
* <p>Company: </p>
* @author unascribed
* @version 1.0
*/

public class FrmTest1 extends JFrame {
private JButton jButton1 = new JButton();
String sTbl1 = "tbl1";
String sTbl2 = "tbl2";
String[] sCols1 = {"a1","b1","c1","d","e","f","g","h","i"};
String[] sCols2 = {"a2","b2","c2"};
private JTextField jTable1 = new JTextField(sTbl1);
private JTextField jTable2 = new JTextField(sTbl2);
public FrmTest1() {
try {
jbInit();
//ウィンドウを中央に配置
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
Dimension frameSize = this.getSize();
if (frameSize.height > screenSize.height)
frameSize.height = screenSize.height;
if (frameSize.width > screenSize.width)
frameSize.width = screenSize.width;
this.setLocation((screenSize.width - frameSize.width) / 2, (screenSize.height - frameSize.height) / 2);
this.setVisible(true);
new DropTarget(jTable2,new TblDropListenre());
DragSource dragSource = DragSource.getDefaultDragSource();
dragSource.createDefaultDragGestureRecognizer(
jTable1, // component where drag originates
DnDConstants.ACTION_LINK, // actions
new TblGesture());
}
catch(Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
FrmTest1 frmTest1 = new FrmTest1();
frmTest1.show();
}
private void jbInit() throws Exception {
this.setSize(400,300);
jButton1.setBounds(new Rectangle(41, 29, 58, 16));
jButton1.setText("jButton1");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
jButton1_actionPerformed(e);
}
});
this.getContentPane().setLayout(null);
jTable1.setBounds(new Rectangle(37, 89, 136, 98));
jTable2.setBounds(new Rectangle(199, 87, 146, 102));
this.getContentPane().add(jButton1, null);
this.getContentPane().add(jTable1, null);
this.getContentPane().add(jTable2, null);
}

void jButton1_actionPerformed(ActionEvent e) {

}
class TblDragListener implements DragSourceListener{
public void dragEnter(DragSourceDragEvent dsde){
System.out.println("dragEnter(DragSourceDragEvent dsde)");
}
public void dragOver(DragSourceDragEvent dsde){
System.out.println("dragOver(DragSourceDragEvent dsde)");
}
public void dragDropEnd(DragSourceDropEvent dsde){
System.out.println("dragDropEnd(DragSourceDropEvent dsde)");
}
public void dropActionChanged(DragSourceDragEvent dsde){
System.out.println("dropActionChanged(DragSourceDragEvent dsde)");
}
public void dragExit(DragSourceEvent dse){
System.out.println("dragExit(DragSourceEvent dse)");
}
}
class TblDropListenre implements DropTargetListener{
public void dragEnter(DropTargetDragEvent dtde){
System.out.println("dragEnter(DropTargetDragEvent dtde)");
}
public void dragOver(DropTargetDragEvent dtde){
System.out.println("dragOver(DropTargetDragEvent dtde)");
}
public void dropActionChanged(DropTargetDragEvent dtde){
System.out.println("dropActionChanged(DropTargetDragEvent dtde)");
}
public void dragExit(DropTargetEvent dte){
System.out.println("dragExit(DropTargetEvent dte)");
}
public void drop(DropTargetDropEvent e){
System.out.println("drop(DropTargetDropEvent e)");
}
}
class TblGesture implements DragGestureListener{
public void dragGestureRecognized(DragGestureEvent dge){
System.out.println("dragGestureRecognized(DragGestureEvent dge)");
int i = 1;
DragData dd = new DragData(null,i);
StrDataTransfer dataTransfer = new StrDataTransfer(dd);
if(dataTransfer == null){
return;
}
dge.startDrag(DragSource.DefaultLinkDrop,dataTransfer,new TblDragListener());
}
}
class StrDataTransfer implements Transferable{
DragData data;
DataFlavor flavor;
public StrDataTransfer(JPanel tbl,int col){
this.data = new DragData(tbl,col);
try{
flavor = new DataFlavor(Class.forName("FrmTest1$DragData"),"DragData");
}catch(Exception e){
e.printStackTrace();
}
}
public StrDataTransfer(DragData df){
this.data = df;
try{
flavor = new DataFlavor(Class.forName("FrmTest1$DragData"),"DragData");
}catch(Exception e){
e.printStackTrace();
}
}
public Object getTransferData(DataFlavor flavor) {
if(isDataFlavorSupported(flavor))
return data;
return null;
}
public DataFlavor[] getTransferDataFlavors(){
DataFlavor[] df = {flavor};
return df;
}
public boolean isDataFlavorSupported(DataFlavor flavor1){
if(flavor1.equals(flavor))
return true;
return false;
}
}
class DragData{
private JPanel table;
private int iCol;
public DragData(JPanel tbl,int iCol){
this.table = tbl;
this.iCol = iCol;
}
public JPanel getTable(){
return table;
}
public int getCol(){
return iCol;
}
}
}
bjzhanghao 2003-03-14
  • 打赏
  • 举报
 回复
我也试了呀，可以了
dragEnter(DropTargetDragEvent dtde)

dragOver(DropTargetDragEvent dtde)

dragOver(DropTargetDragEvent dtde)

dragOver(DropTargetDragEvent dtde)

dragOver(DropTargetDragEvent dtde)

dragOver(DropTargetDragEvent dtde)

dragOver(DropTargetDragEvent dtde)

dragOver(DropTargetDragEvent dtde)

dragOver(DropTargetDragEvent dtde)

dragOver(DropTargetDragEvent dtde)

dragOver(DropTargetDragEvent dtde)

dragOver(DropTargetDragEvent dtde)

dragOver(DropTargetDragEvent dtde)

dragOver(DropTargetDragEvent dtde)

dragOver(DropTargetDragEvent dtde)

dragOver(DropTargetDragEvent dtde)

dragOver(DropTargetDragEvent dtde)

dragOver(DropTargetDragEvent dtde)

dragOver(DropTargetDragEvent dtde)

dragOver(DropTargetDragEvent dtde)

dragOver(DropTargetDragEvent dtde)

dragExit(DropTargetEvent dte)

drop(DropTargetDropEvent e)
lianyunzxp 2003-03-14
  • 打赏
  • 举报
 回复
我试了,不行呀
还是没有调用Drop方法.
bjzhanghao 2003-03-14
  • 打赏
  • 举报
 回复
new DropTarget(jTable2, DnDConstants.ACTION_LINK,new TblDropListenre());
改为
new DropTarget(jTable2,new TblDropListenre());
lianyunzxp 2003-03-14
  • 打赏
  • 举报
 回复
大家快来帮帮忙呀..........
21.[开源][安卓][拖拽]drag-sort-listview-master
21.[开源][安卓][拖拽]drag-sort-listview-master DragSortListView（DSLV）是Android ListView的一个扩展，支持拖拽排序和左右滑动删除功能。重写了TouchInterceptor（TI）类来提供更加优美的拖拽动画效果。 DSLV...
Source Code: WPF拖放功能实现
Source Code: WPF拖放功能实现
Jetpack 又双叒一新成员 DragAndDrop 框架：大大简化拖放手势开发
外网原文：Simplifying drag and drop 翻译：TechMerger ...基于此， Jetpack 框架集合里推出了新成员 DragAndDrop 。 本文着重阐述该框架的愿景和核心要点，主要内容译自 Android 开发者关系工程师 Paul 在 Med.
VMVare中Ubuntu报错：Drag and drop is not supported
VMVare中安装了VMVare tools的Ubuntu系统无法和win主机拖拽传输文件，并且报错：Drag and drop is not supported。
Drag and drop拖放框架
Drag and drop拖放框架 android11-release 应用使用 拖放 Drag and drop Drag and drop拖放启动 APP调用启动 拖放 Drag and drop startDragAndDrop启动 frameworks/base/core/java/android/view/View.java ...
Java SE

62,614

社区成员

307,326

社区内容

发帖
与我相关
我的任务
社区描述
Java 2 Standard Edition
社区管理员
  • Java SE
加入社区
  • 近7日
  • 近30日
  • 至今

加载中

查看更多榜单
社区公告
暂无公告

试试用AI创作助手写篇文章吧

+ 用AI写文章