Question

求教java imageicon

要用java编一个frame, 利用timer连续显示50张图片,连成一个简单的动画~用imageicon
但是现在有个问题就是图片比较大，大约都有1.2Mb左右，但是貌似icon只能用250Kb左右的图片。。现在能不能在不改变图片的基础上完成呢。。

求大神帮写个代码啊
解决再加100分

Answer 1

public class TestIcon extends JFrame implements ActionListener {

private static final long serialVersionUID = 1L;
private Timer timer;
private JPanel panel;
private ImageIcon img;
private int mark = 0; // 保存正在画的位置

public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
TestIcon frame = new TestIcon();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
});
}

public TestIcon() {
setBounds(300, 300, 450, 300);
panel = new JPanel();
setContentPane(panel);
timer = new Timer(1000, this); // 计时器每秒画一次
timer.setDelay(3000); // 设置第一次延迟
timer.start();
}

public void actionPerformed(ActionEvent e) {
if (e.getSource() == timer) {
/*画资源图片，在当前工程 classpath下有一个res目录存放图片*/
img = new ImageIcon("res/" + (++mark) + ".jpg");
if (mark >= 10) { mark = 0; }
repaint();
}
}

public void paint(Graphics g) {
if (null != img) g.drawImage(img.getImage(), 0, 0, this);
}
}
做个简单的例子 有问题q我 353314220

Answer 2

imageicon就是可以用图片的,不一定只是icon格式的.
给你一个例子
-------------------------------------------------------------------------------------------

import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.util.Date;
import java.util.Timer;
import java.util.TimerTask;

import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class App extends JFrame implements ActionListener {

int k = 0;
boolean isTree = false;
File[] imageFiles = null;

public App() {

// 放图片的目录.
File root = new File("G:\\jpg");
imageFiles = root.listFiles();
getContentPane().setLayout(null);

JPanel panel = new ImagePanel();
panel.setBounds(10, 72, 554, 586);
getContentPane().add(panel);

setDefaultCloseOperation(EXIT_ON_CLOSE);
setSize(580, 700);
setLocationRelativeTo(null);
setResizable(false);
setVisible(true);

Timer t = new Timer();
// 3秒换一次
t.schedule(new ImageTask(), new Date(), 1000 * 3);

}

public static void main(String[] args) {
new App();
}

public void actionPerformed(ActionEvent e) {

}

class ImageTask extends TimerTask {

public void run() {
repaint();
}
}

class ImagePanel extends JPanel {

int index = 0;

public void paint(Graphics g) {
super.paint(g);
if (imageFiles == null || imageFiles.length == 0) {
return;
}
if (index == imageFiles.length) {
index = 0;
}
ImageIcon img = new ImageIcon(imageFiles[index++].getPath());
g.drawImage(img.getImage(), 0, 0, 550, 580, this);
}
}
}