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我正在尝试在ArrayList中放入一组Picture对象，然后随机随机混合并将它们显示为3x3的网格。但是，洗牌方法不适合我。或者也许我在draw或drawImage方法中做了任何错误，我不知道。 我总是从9个图片按原始顺序显示图片，而不是随机洗牌。Java drawImage方法
看下面我的PicturePiece类以及主类。
package lab;
import java.awt.Graphics2D;
import java.awt.Image;
import java.io.File;
import javax.imageio.ImageIO;
public class PicturePiece {
private int IMAGE_X = 266;
private int IMAGE_Y = 224;
private final int row;
private final int col;
private Image img;
private static int count = 0;
private int id = 0;
public PicturePiece(int row, int col, File f) {
try {
this.img = ImageIO.read(f);
} catch (Exception e) {
e.printStackTrace();
}
this.row = this.IMAGE_X * row;
this.col = this.IMAGE_Y * col;
PicturePiece.count++;
this.id = PicturePiece.count;
}
public void draw(Graphics2D g2) {
g2.drawImage(this.img, this.row, this.col, null);
}
public void setPosition(int row, int col) {
this.IMAGE_X = row;
this.IMAGE_Y = col;
}
public int getXposition() {
return this.IMAGE_X;
}
public int getYposition() {
return this.IMAGE_Y;
}
public int getRow() {
return this.row;
}
public int getCol() {
return this.col;
}
public String getImage() {
return this.img.toString();
}
public static int getPictureCount() {
return PicturePiece.count;
}
public int getId() {
return this.id;
}
}
这里是我的主类：
/* 从网上找到一个漂亮的图像，并使用图像编辑器来 分解成9块（例如，您可以使用该应用程序在Windows中绘制）。 以随机顺序在3×3网格中显示9个图像。添加一个鼠标监听器。 允许用户通过点击交换两个图像。 游戏的目标是重新创建原始图像。 当用户获胜时显示适当的消息。 */
package lab;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.io.File;
import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JPanel;
import java.util.*;
public class Puzzle {
public static void main(String[] args) throws Exception {
MyFrame frame = new MyFrame();
frame.setSize(1000, 1000);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}
class MyFrame extends JFrame {
MyPanel p;
public MyFrame() {
p = new MyPanel();
add(p);
setVisible(true);
}
}
class MyPanel extends JPanel {
private ArrayList<PicturePiece> images = new ArrayList<PicturePiece>();
public MyPanel() {
this.setFocusable(true);
try {
int j = 0, k = 0, pocet = 0;
for (int i = 1; i <= 9; i++) {
//g2.drawImage(images.get(i), (IMAGE_X * (j)), (IMAGE_Y * (k)), null);
images.add(new PicturePiece(j, k, new File(("/home/ivo/Pictures/domcek/domcek" + i + ".jpg"))));
pocet++;
//System.out.println("j = " + (j - 1) + "; k = " + (k - 1) + "; i = " + i + "; pocet = " + pocet);
if ((pocet % 3) == 0) {
j = 0;
k++;
} else {
j = j + 1;
}
}
} catch (Exception e) {
}
//Random rnd = new Random();
//rnd.setSeed(400);
//Collections.shuffle(images, rnd);
Collections.shuffle(images);
}
public void draw(Graphics2D g2) {
try {
for (int i = 0; i <= images.size(); i++) {
images.get(i).draw(g2);
}
} catch (Exception my) {
}
}
@Override
public void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2 = (Graphics2D) g;
draw(g2);
}
}
您设置洗牌前的图像位置，所以尽管绘图顺序是随机的，但这些位置不是。 – kiheru 2015-03-02 12:47:29