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java实现动画的代码 java实现简单动画效果源代码
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怎么用java做动画
重写paint方法，来实现将自己定义的图片绘制到组件中，然后启动一个线程来控制paint方法。 示例： ××××××××××××××××××××××××××× import javax.swing.*; import java.awt.*;class MyPanel extends JPanel implements Runnable {private Image img;private int i=0;private int j=0;public MyPanel(){img=new ImageIcon("1.png").getImage();}public void paint(Graphics g){g.drawImage(img,0,0,60,104,i*60,j*104,i*60+60,j*104+104,this);}public void run(){while(true){while(j {while(i {try{Thread.sleep(300);}catch(Exception e){}this.repaint();i++;}j++;i=0;}i=0;j=0;}} }public class test extends JFrame {private MyPanel p;public test(){p=new MyPanel();this.add(p,BorderLayout.CENTER);this.setBounds(300,200,300,300);this.setTitle("人物行走图");new Thread(p).start();this.setVisible(true);this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);}public static void main(String args[]){new test();} }××××××××××××××××××××××× 将以上源码保存为：test.java，编译，然后下载下面的图片 将下载的图片改名为1.png" target="_blank"
,然后将其和编译后生成的class文件放在同一文件夹下，然后运行就可以了·～～
相关问答
Q1: 用JAVA在界面中实现幻灯片播放，求代码
要让照片随机播放,需要把照片名改成比如photo1.jpg,photo2.jpg,photo3.jpg...的有序号顺序排列的文件名,
然后把改名后的照片文件放到你的项目名的目录下,比如你的项目名叫"slideshow",你就把照片文件放到slideshow文件夹下.
最后把下面的Java程序拷贝到你的项目中,把有DD类名的地方改成你的类名,就行了.
完整的让一些照片在JFrame窗体里自动随机播放的幻灯片程序如下
(我用的图片文件是photo1.jpg,photo2.jpg,photo3.jpg,注意事项在注释中注明
import java.awt.Graphics;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
public class DD extends JFrame implements Runnable{
ImageIcon ii=new ImageIcon("photo1.jpg");//这里换成你的图片文件名,放在你的项目名的文件夹中
DD(){
super("Slide");
setSize(400, 400);
setLocationRelativeTo(null);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);
}
public void paint(Graphics g){
super.paint(g);
g.drawImage(ii.getImage(),0,0,400,400,null);
}
@Override
public void run() {
while(true){
try {
Thread.sleep(500);//这里是幻灯片播放间隔的时间,这里为500毫秒=0.5秒
} catch (InterruptedException e) {
e.printStackTrace();
}
int i=(int)(Math.random()*3)+1;//这里是产生从1-3的随机数,如果你有6个图片文件,把3改成6就是从1-6的随机数了.
ii=new ImageIcon("photo"+i+".jpg");//这里调用你的图片文件,如果你有6个图片文件,改成从1-6的文件名方便调用
this.repaint();
}
}
public static void main(String[] args) {
DD d=new DD();
Thread t=new Thread(d);
t.start();
}
}
Q2: 求java做动画代码
import java.awt.Canvas;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.RenderingHints;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
public class TestImage extends Frame
{
private static final long serialVersionUID = 1L;
private static boolean PRESSED = false;
private static int pointX = 0;
private static int pointy = 200;
private static int RIGHT_GO = 0;
private static int LEFT_GO = 0;
private static int DIR = 0;
private static int ANGLE = 0;
private static int W = 50;
private static int H = 60;
private _Canvas canvas = null;
public TestImage ()
{
add (canvas = new _Canvas ());
setIgnoreRepaint (true);
requestFocus ();
}
public class _Canvas extends Canvas implements Runnable
{
private static final long serialVersionUID = 1L;
private BufferedImage bi = null;
private Image bufferedImage = null;
private Thread thread = null;
private long sleepTime = 10;
public _Canvas ()
{
try
{
bi = ImageIO.read (new File ("go.png"));
}
catch (IOException e)
{}
setBackground (Color.BLACK);
requestFocus ();
addKeyListener (new KeyListener ()
{
@Override
public void keyTyped ( KeyEvent e )
{}
@Override
public void keyReleased ( KeyEvent e )
{
RIGHT_GO = 0;
PRESSED = false;
}
@Override
public void keyPressed ( KeyEvent e )
{
// 38 40 37 39上下左右
DIR = e.getKeyCode ();
PRESSED = true;
}
});
}
@Override
public void paint ( Graphics g )
{
Graphics2D g2d = (Graphics2D) g;
g2d.setRenderingHint (RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g2d.drawImage (rotateImage (bi.getSubimage (RIGHT_GO, LEFT_GO, W, H), ANGLE, true), pointX, pointy, W, H,
this);
g2d.dispose ();
}
@Override
public void update ( Graphics g )
{
if (null == bufferedImage)
{
bufferedImage = createImage (getWidth (), getHeight ());
}
Graphics bufferedG = bufferedImage.getGraphics ();
bufferedG.clearRect (0, 0, getWidth (), getHeight ());
paint (bufferedG);
bufferedG.dispose ();
g.drawImage (bufferedImage, 0, 0, this);
g.dispose ();
}
public void start ()
{
thread = new Thread (this);
thread.setName ("TestImage");
thread.setPriority (Thread.MIN_PRIORITY);
thread.start ();
}
public synchronized void stop ()
{
thread = null;
notify ();
}
@Override
public void run ()
{
Thread me = Thread.currentThread ();
while (thread == me !isShowing () || getSize ().width == 0)
{
try
{
Thread.sleep (555);
}
catch (InterruptedException e)
{
return;
}
}
while (thread == me isShowing ())
{
if (PRESSED)
{
try
{
if (DIR == 39)
{
RIGHT_GO = RIGHT_GO + 50;
LEFT_GO = 0;
pointX = pointX + 1;
if (pointX 420)
{
ANGLE = 90;
pointX--;
pointy--;
W = 60;
H = 50;
}
if (RIGHT_GO 50)
{
RIGHT_GO = 0;
}
}
else if (DIR == 37)
{
pointX = pointX - 1;
RIGHT_GO = RIGHT_GO + 50;
LEFT_GO = 60;
if (pointX 0)
{
ANGLE = -90;
pointX++;
pointy--;
W = 60;
H = 50;
}
if (RIGHT_GO 50)
{
RIGHT_GO = 0;
}
}
else if (DIR == 38)
{
W = 50;
H = 60;
pointy = 150;
ANGLE = 0;
RIGHT_GO = 100;
}
else if (DIR == 40)
{
W = 50;
H = 60;
ANGLE = 0;
pointy = 200;
RIGHT_GO = 0;
}
Thread.sleep (sleepTime);
repaint ();
}
catch (InterruptedException e)
{
break;
}
}
else
{
RIGHT_GO = RIGHT_GO + 50;
LEFT_GO = 0;
pointX = pointX + 1;
if (RIGHT_GO 50)
{
RIGHT_GO = 0;
}
if (pointX 500)
{
pointX = 0;
}
try
{
Thread.sleep (sleepTime);
repaint ();
}
catch (InterruptedException e)
{
break;
}
}
}
thread = null;
}
}
/**
* 旋转图像为指定角度
*
* @param degree
* @return
*/
public static BufferedImage rotateImage ( final BufferedImage image, final int angdeg, final boolean d )
{
int w = image.getWidth ();
int h = image.getHeight ();
int type = image.getColorModel ().getTransparency ();
BufferedImage img;
Graphics2D graphics2d;
( graphics2d = ( img = new BufferedImage (w, h, type) ).createGraphics () ).setRenderingHint (
RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
graphics2d.rotate (d ? -Math.toRadians (angdeg) : Math.toRadians (angdeg), w / 2, h / 2);
graphics2d.drawImage (image, 0, 0, null);
graphics2d.dispose ();
return img;
}
public static void main ( String[] args )
{
EventQueue.invokeLater (new Runnable ()
{
@Override
public void run ()
{
final TestImage ti = new TestImage ();
ti.setSize (new Dimension (500, 300));
ti.setLocationRelativeTo (null);
ti.addWindowListener (new WindowAdapter ()
{
@Override
public void windowClosing ( WindowEvent e )
{
System.exit (0);
}
@Override
public void windowDeiconified ( WindowEvent e )
{
ti.canvas.start ();
}
@Override
public void windowIconified ( WindowEvent e )
{
ti.canvas.stop ();
}
});
ti.setResizable (false);
ti.canvas.start ();
ti.setVisible (true);
}
});
}
}
Q3: JAVA运行时出现 exception in thread \"main\"java.lang.NullPointerException at
- -! 多谢抬举啊
ImageIcon的构造函数抛出空值针异常 那就是说 getClass().getResource('..') 未能找到图片呗
十有八九你是用myeclipse运行的 eclipse的运行目录是项目的根目录 也就是说你的 images/目录 应该在项目的根目录下 而不是在 src目录下
还是建议你们不要过早的使用 eclipse netbean 之类的东西 字符行更适合初学 或者Ant Maven 这样你才能更了解 java环境
其实就构建和工程化来说 Ant 和 Maven 比 eclipse好用得多
=========
建议你把这个字符串先打印出来看一下 "images/"+IMAGE_NAME+count+".jpg"
Q4: 假如用JAVA编写出了一个小游戏代码 如何让它和动画结合 变成游戏
动画效果的制作原理就是：容器上已有的图片在不断的重绘此容器的过程中改变其图片的坐标，就会产生动画效果。因此可以做一个线程，在while循环里调用repaint()方法，不断地重新绘制面板。或者用javax.swing.Timer类每隔一段时间重绘面板。
Q5: 2.Java有哪几种常见的实现动画的方法?
一: 用多线程播放一组图片, 实现动画片java实现动画的代码的效果; 类似于逐帧动画,每个图片是动画java实现动画的代码的一帧
二: 在awt/swing界面里, 可以使用paint方法,去绘制图形,然后用swing提供java实现动画的代码的Timer或者多线程技术,去刷新绘制java实现动画的代码的图形
三:在JavaFX里, 本身就支持动画,并且封装java实现动画的代码了很多动画效果可以直接使用,比如逐帧动画.缩放动画,渐变动画,旋转动画,位置动画等.
强烈推荐使用javaFX来实现动画, 因为javaFX是现代化的图形界面工具,具有简单,强大,组件丰富,跨平台,支持Html5, 支持表格, 支持动画等多种优势
下面是一个javaFX绘制的动态表格
javaFX动态表格
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