java Swing中的停止计时器
我刚开始在Swing中使用java Swing中的停止计时器,java,swing,timer,actionlistener,mouselistener,Java,Swing,Timer,Actionlistener,Mouselistener,我刚开始在Swing中使用计时器。我编写的程序基本上是将一个矩形上下移动到屏幕上的特定点，我使用计时器使其缓慢而平稳地运行。但我在试图阻止它时遇到了问题。代码如下： 提升等级更改矩形的y位置： public void moveUp(int destination){ speed++; if(speed>5){ speed = 5; } System.out.println("Speed is: "+s
计时器 public void moveUp(int destination){
speed++;
if(speed>5){
speed = 5;
}
System.out.println("Speed is: "+speed);
yPos -= speed;
if(yPos < destination){
yPos = destination;
isStop = true;
}
setPos(xPos, yPos);
}
为了可视化如何处理这个问题，我编写了一个小示例： 启动时，将创建两个矩形。当您在绘图区域上单击鼠标左键时，它们开始移动 到达目的地线路时，运动将停止 逻辑取决于矩形类中的状态。当计时器事件处理程序运行时，如果到达的所有矩形都具有ISSTTOPED状态，则会检查每个矩形的状态，并停止计时器：
public void mousePressed(MouseEvent e) {
if (e.getButton() == MouseEvent.BUTTON1) {
timer = new Timer(100, new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
/**
* Variable isStopped is used to track, if any
* rectangle didn't reach the destination yet
*/
boolean isStopped = true;
for(int i = 0; i < count; i++){
rectangles[i].moveUp(destination);
if (!rectangles[i].isStopped()) {
isStopped = false;
}
}
drawPanel.repaint();
/**
* With all rectangles having arrived at destination,
* the timer can be stopped
*/
if (isStopped) {
timer.stop();
}
}
});
timer.start();
}
}
public void鼠标按下（MouseEvent e）{
如果（例如getButton（）==MouseEvent.BUTTON1）{
计时器=新计时器（100，新ActionListener（）{
@凌驾
已执行的公共无效操作（操作事件e）{
/**
*变量ISS用于跟踪（如果有）
*矩形尚未到达目的地
*/
布尔值=真；
for（int i=0；i/**
* Moves the rectangle up until destination is reached
* speed is the amount of a single movement.
*/
public void moveUp(int destination) {
if (speed < 5) {
speed++;
}
y -= speed;
if (y < destination) {
y = destination;
isStop = true;
}
}
public boolean isStopped() {
return isStop;
}
/**
*向上移动矩形，直到到达目标
*速度是单个运动的量。
*/
公共无效移动（整数目的地）{
如果（速度<5）{
速度++；
}
y-=速度；
如果（y<目的地）{
y=目的地；
isStop=true；
}
}
公共布尔值（）{
返回顶部；
}
package question;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import javax.swing.SwingUtilities;
import javax.swing.Timer;
public class MovingRectangle extends JPanel {
/**
* The serial version uid.
*/
private static final long serialVersionUID = 1L;
private Rectangle[] rectangles = new Rectangle[10];
private int count;
private int destination;
private JPanel controlPanel;
private DrawingPanel drawPanel;
private JButton stop;
private Timer timer;
public static void main(String[] args){
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
JFrame frame = new JFrame("Rectangles");
frame.setContentPane(new MovingRectangle());
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.pack();
frame.setVisible(true);
}
});
}
public MovingRectangle(){
/** Imaginary horizontal line - the destination */
destination = 200;
/** Create the control panel for the left side containing the buttons */
controlPanel = new JPanel();
controlPanel.setPreferredSize(new Dimension(120, 400));
/** Create the button */
stop = new JButton("Stop");
stop.addActionListener(new ButtonListener());
controlPanel.add(stop);
/** Create a hint how to start the movement. */
JTextArea textHint = new JTextArea(5, 10);
textHint.setEditable(true);
textHint.setText("Please click on the drawing area to start the movement");
textHint.setLineWrap(true);
textHint.setWrapStyleWord(true);
controlPanel.add(textHint);
/** Add control panel to the main panel */
add(controlPanel);
/** Create the drawing area for the right side */
drawPanel = new DrawingPanel();
/** Add the drawing panel to the main panel */
add(drawPanel);
/** With a left mouse button click the timer can be started */
drawPanel.addMouseListener(new MouseListener() {
@Override
public void mousePressed(MouseEvent e) {
if (e.getButton() == MouseEvent.BUTTON1) {
timer = new Timer(100, new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
/**
* Variable isStopped is used to track, if any
* rectangle didn't reach the destination yet
*/
boolean isStopped = true;
for(int i = 0; i < count; i++){
rectangles[i].moveUp(destination);
if (!rectangles[i].isStopped()) {
isStopped = false;
}
}
drawPanel.repaint();
/**
* With all rectangles having arrived at destination,
* the timer can be stopped
*/
if (isStopped) {
timer.stop();
}
}
});
timer.start();
}
}
@Override
public void mouseReleased(MouseEvent arg0) {
}
@Override
public void mouseClicked(MouseEvent e) {
}
@Override
public void mouseEntered(MouseEvent e) {
}
@Override
public void mouseExited(MouseEvent e) {
}
});
/** Add two rectangles to the drawing area */
addRectangle(100, 30, 0, 370, new Color(255, 0, 0));
addRectangle(120, 50, 200, 350, new Color(0, 0, 255));
}
private void addRectangle(final int widthParam, final int heightParam, final int xBegin, final int yBegin, final Color color) {
/** Add a new rectangle, if array not filled yet */
if (count < rectangles.length) {
rectangles[count] = new Rectangle(widthParam, heightParam, xBegin, yBegin, color);
count++;
drawPanel.repaint();
}
}
/** This inner class is used to handle the button event. */
private class ButtonListener implements ActionListener {
public void actionPerformed(ActionEvent e){
if (e.getSource() == stop){
timer.stop();
}
}
}
/** This inner class provides the drawing panel */
private class DrawingPanel extends JPanel{
/** The serial version uid. */
private static final long serialVersionUID = 1L;
public DrawingPanel() {
this.setPreferredSize(new Dimension(400, 400));
setBackground(new Color(200, 220, 255));
}
public void paintComponent(Graphics g){
super.paintComponent(g);
/** Draw destination line */
g.setColor(new Color(150, 150, 150));
g.drawLine(0, destination, 400, destination);
/** Draw rectangles */
for(int i = 0; i < count; i++){
rectangles[i].display(g);
}
}
}
}
包装问题；
导入java.awt.Color；
导入java.awt.Dimension；
导入java.awt.Graphics；
导入java.awt.event.ActionEvent；
导入java.awt.event.ActionListener；
导入java.awt.event.MouseEvent；
导入java.awt.event.MouseListener；
导入javax.swing.JButton；
导入javax.swing.JFrame；
导入javax.swing.JPanel；
导入javax.swing.JTextArea；
导入javax.swing.SwingUtilities；
导入javax.swing.Timer；
公共类MovingRectangle扩展了JPanel{
/**
*串行版本为uid。
*/
私有静态最终长serialVersionUID=1L；
私有矩形[]矩形=新矩形[10]；
私人整数计数；
私人目的地；
专用JPanel控制面板；
私人绘图面板绘图面板；
私人按钮站；
私人定时器；
公共静态void main（字符串[]args）{
SwingUtilities.invokeLater（新的Runnable（）{
@凌驾
公开募捐{
JFrame=新的JFrame（“矩形”）；
setContentPane（新的MovingRectangle（））；
frame.setDefaultCloseOperation（JFrame.DISPOSE_ON_CLOSE）；
frame.pack（）；
frame.setVisible（true）；
}
});
}
公共移动矩形（）{
/**假想水平线-目的地*/
目的地=200；
/**为包含按钮的左侧创建控制面板*/
控制面板=新的JPanel（）；
控制面板。设置首选尺寸（新尺寸（120400））；
/**创建按钮*/
停止=新按钮（“停止”）；
addActionListener（新按钮Listener（））；
控制面板。添加（停止）；
/**创建如何开始移动的提示*/
JTextArea textHint=新的JTextArea（5,10）；
textHint.setEditable（true）；
text提示.setText（“请单击绘图区域开始移动”）；
textHint.setLineWrap（true）；
textHint.setWrapStyleWord（true）；
添加（文本提示）；
/**将控制面板添加到主面板*/
添加（控制面板）；
/**创建右侧的绘图区域*/
drawPanel=新的DrawingPanel（）；
/**将图形面板添加到主面板*/
添加（绘图面板）；
/**用鼠标左键单击计时器即可启动*/
drawPanel.AddMouseStener（新的MouseStener（）{
@凌驾
公共无效鼠标按下（MouseEvent e）{
如果（例如getButton（）==MouseEvent.BUTTON1）{
计时器=新计时器（100，新ActionListener（）{
@凌驾
已执行的公共无效操作（操作事件e）{
/**
*变量ISS用于跟踪（如果有）
*矩形尚未到达目的地
*/
布尔值=真；
for（int i=0；ipackage question;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import javax.swing.SwingUtilities;
import javax.swing.Timer;
public class MovingRectangle extends JPanel {
/**
* The serial version uid.
*/
private static final long serialVersionUID = 1L;
private Rectangle[] rectangles = new Rectangle[10];
private int count;
private int destination;
private JPanel controlPanel;
private DrawingPanel drawPanel;
private JButton stop;
private Timer timer;
public static void main(String[] args){
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
JFrame frame = new JFrame("Rectangles");
frame.setContentPane(new MovingRectangle());
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.pack();
frame.setVisible(true);
}
});
}
public MovingRectangle(){
/** Imaginary horizontal line - the destination */
destination = 200;
/** Create the control panel for the left side containing the buttons */
controlPanel = new JPanel();
controlPanel.setPreferredSize(new Dimension(120, 400));
/** Create the button */
stop = new JButton("Stop");
stop.addActionListener(new ButtonListener());
controlPanel.add(stop);
/** Create a hint how to start the movement. */
JTextArea textHint = new JTextArea(5, 10);
textHint.setEditable(true);
textHint.setText("Please click on the drawing area to start the movement");
textHint.setLineWrap(true);
textHint.setWrapStyleWord(true);
controlPanel.add(textHint);
/** Add control panel to the main panel */
add(controlPanel);
/** Create the drawing area for the right side */
drawPanel = new DrawingPanel();
/** Add the drawing panel to the main panel */
add(drawPanel);
/** With a left mouse button click the timer can be started */
drawPanel.addMouseListener(new MouseListener() {
@Override
public void mousePressed(MouseEvent e) {
if (e.getButton() == MouseEvent.BUTTON1) {
timer = new Timer(100, new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
/**
* Variable isStopped is used to track, if any
* rectangle didn't reach the destination yet
*/
boolean isStopped = true;
for(int i = 0; i < count; i++){
rectangles[i].moveUp(destination);
if (!rectangles[i].isStopped()) {
isStopped = false;
}
}
drawPanel.repaint();
/**
* With all rectangles having arrived at destination,
* the timer can be stopped
*/
if (isStopped) {
timer.stop();
}
}
});
timer.start();
}
}
@Override
public void mouseReleased(MouseEvent arg0) {
}
@Override
public void mouseClicked(MouseEvent e) {
}
@Override
public void mouseEntered(MouseEvent e) {
}
@Override
public void mouseExited(MouseEvent e) {
}
});
/** Add two rectangles to the drawing area */
addRectangle(100, 30, 0, 370, new Color(255, 0, 0));
addRectangle(120, 50, 200, 350, new Color(0, 0, 255));
}
private void addRectangle(final int widthParam, final int heightParam, final int xBegin, final int yBegin, final Color color) {
/** Add a new rectangle, if array not filled yet */
if (count < rectangles.length) {
rectangles[count] = new Rectangle(widthParam, heightParam, xBegin, yBegin, color);
count++;
drawPanel.repaint();
}
}
/** This inner class is used to handle the button event. */
private class ButtonListener implements ActionListener {
public void actionPerformed(ActionEvent e){
if (e.getSource() == stop){
timer.stop();
}
}
}
/** This inner class provides the drawing panel */
private class DrawingPanel extends JPanel{
/** The serial version uid. */
private static final long serialVersionUID = 1L;
public DrawingPanel() {
this.setPreferredSize(new Dimension(400, 400));
setBackground(new Color(200, 220, 255));
}
public void paintComponent(Graphics g){
super.paintComponent(g);
/** Draw destination line */
g.setColor(new Color(150, 150, 150));
g.drawLine(0, destination, 400, destination);
/** Draw rectangles */
for(int i = 0; i < count; i++){
rectangles[i].display(g);
}
}
}
}
package question;
import java.awt.Color;
import java.awt.Graphics;
public class Rectangle {
private int x, y, width, height;
private Color color;
private boolean isStop = false;
private int speed = 0;
public Rectangle(final int widthParam, final int heightParam, final int xBegin, final int yBegin, final Color colorParam) {
width = widthParam;
height = heightParam;
this.x = xBegin;
this.y = yBegin;
this.color = colorParam;
}
public void display(Graphics g){
g.setColor(this.color);
g.fillRect(this.x, this.y, this.width, this.height);
}
/**
* Moves the rectangle up until destination is reached
* speed is the amount of a single movement.
*/
public void moveUp(int destination) {
if (speed < 5) {
speed++;
}
y -= speed;
if (y < destination) {
y = destination;
isStop = true;
}
}
public boolean isStopped() {
return isStop;
}
}
Point rv;
rv= rectangle.this.getLocation();
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
timer1.setInitialDelay(0);
timer1.start();
jTextArea1.append("Timer 1 Started Moving Down\n");
}
private Timer timer1 = new Timer(10, new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
rv.y++;
if (rv.y == 500) {
timer1.stop();
jTextArea1.append("Timer 1 Stopped\n");
jTextArea1.append("Timer 2 Started Moving Up\n");
timer2.setInitialDelay(0);
timer2.start();
}
rectangle.this.setLocation(rv.x , rv.y);
rectangle.this.repaint();
}
});
private Timer timer2 = new Timer(5, new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
rv.y--;
if (rv.y == 200 ) {
timer2.stop();
jTextArea1.append("Timer 2 Stopped\n");
}
rectangle.this.setLocation(rv.x , rv.y);
rectangle.this.repaint();
}
});