《Java程序设计》第17周课程设计：《猜猜看》游戏 第二天

今天我完成了显示图片的部分，但并不是随机出现图片的，我是按一定公式来进行图片的显示。

// 再猜一次 按钮，点击则更新相应的三张图片 与 带猜测学生姓名
JButton btnGuessAgain = new JButton("\u518D\u731C\u4E00\u6B21");
btnGuessAgain.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {

String strTmp = fileArray[index+1].toString();
index++;
if(index==NUM_IMG)
index =0;
lblImg1.setIcon(new ImageIcon(strTmp));

String strTmp1 = fileArray[index1+10].toString();
index1++;
if(index1==NUM_IMG)
index1 = 0;
lblImg2.setIcon(new ImageIcon(strTmp1));

String strTmp2 = fileArray[index2+18].toString();
index2++;
if(index2==NUM_IMG)
index2 = 0;
lblImg3.setIcon(new ImageIcon(strTmp2));先定义了变量index，index1，index2，默认都为0，可是增长量并不同；index的为+1，index1的为+10，index2的为+18；然而这最大的问题是达到了文件排列最后的文件时会出现图片不显示或者报告错误，还有没改善图片缩放的问题；





下一步我还需要利用txt文件在框内输出其中的信息，并设置按钮去核对判断是否猜中；

import java.awt.EventQueue;

import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.AbstractButton;
import javax.swing.ImageIcon;
import javax.swing.JFileChooser;
import javax.swing.JButton;
import javax.swing.JTextField;
import javax.swing.JLabel;
import java.awt.Color;
import java.awt.Component;
import java.awt.Image;
import java.awt.SystemColor;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.io.File;
import java.io.FilenameFilter;
import java.io.IOException;
import java.util.EventObject;
public class Guess01<lblImg1> extends JFrame {
/**
*
*/
private static final long serialVersionUID = 1L;
String strPath = ""; //文件夹路径
String strFileName = ""; //文件名称

File[] fileArray; // 文件夹下所有文件
int NUM_IMG = 0; // 文件总数目
int index = 0; // 当前文件的序号
int index1 =0;
int index2 =0;
private JPanel contentPane;
private JTextField tfDir;
private JTextField tfClass;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
Guess01 frame = new Guess01();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}

/**
* Create the frame.
*/
public Guess01() {
setTitle("\u731C\u731C\u770B\u6E38\u620FV0.1");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 645, 409);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);

// 选择目录 按钮的处理程序
final JButton btnDir = new JButton("\u9009\u62E9\u76EE\u5F55");
btnDir.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {

JFileChooser jfc=new JFileChooser();
//jfc.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES );
jfc.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
jfc.showDialog(new JLabel(), "选择");
File file=jfc.getSelectedFile();
tfDir.setText(file.getAbsolutePath());
strPath = file.getAbsolutePath();
strFileName = jfc.getSelectedFile().getName();

if(file!=null && file.isDirectory()){
// 参考： java中File.listFiles(FileFilter) FileFilter的使用
// http://zhouzaibao.iteye.com/blog/347557 ;

// 获取文件夹下所有的文件
fileArray = file.listFiles();
NUM_IMG = fileArray.length;
}
}
});
btnDir.setBounds(26, 26, 93, 23);
contentPane.add(btnDir);

// 文本框，显示目录
tfDir = new JTextField();
tfDir.setEditable(false);
tfDir.setBounds(125, 27, 363, 21);
contentPane.add(tfDir);
tfDir.setColumns(10);

// 选择班级 按钮的处理程序
final JButton btnClass = new JButton("\u9009\u62E9\u73ED\u7EA7");
btnClass.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JFileChooser jfc=new JFileChooser();
//jfc.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES );
jfc.setFileSelectionMode(JFileChooser.FILES_ONLY);
jfc.showDialog(new JLabel(), "选择");
File file=jfc.getSelectedFile();
tfClass.setText(file.getAbsolutePath());

}
});
btnClass.setBounds(26, 59, 93, 23);
contentPane.add(btnClass);

// 文本框，显示班级文件
tfClass = new JTextField();
tfClass.setEditable(false);
tfClass.setBounds(125, 60, 363, 21);
contentPane.add(tfClass);
tfClass.setColumns(10);

// 标签，显示带猜测学生姓名
JLabel lbGuessName = new JLabel("\u59D3\u540D");
lbGuessName.setBounds(259, 91, 102, 23);
contentPane.add(lbGuessName);

// 标签，显示第一个学生相片
final JLabel lblImg1 = new JLabel("\u56FE\u72471");
lblImg1.setBackground(Color.RED);
this.add(lblImg1);

lblImg1.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent arg0) {

}
});
lblImg1.setBounds(26, 151, 183, 178);
contentPane.add(lblImg1);

// 标签，显示第二个学生相片
final JLabel lblImg2 = new JLabel("\u56FE\u72472");
lblImg2.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {

}
});
lblImg2.setForeground(Color.BLACK);
lblImg2.setBackground(SystemColor.inactiveCaption);
lblImg2.setBounds(241, 155, 183, 172);
contentPane.add(lblImg2);

// 标签，显示第三个学生相片
final JLabel lblImg3 = new JLabel("\u56FE\u72473");
lblImg3.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {

}
});
lblImg3.setBounds(434, 155, 185, 172);
contentPane.add(lblImg3);

// 再猜一次 按钮，点击则更新相应的三张图片 与 带猜测学生姓名
JButton btnGuessAgain = new JButton("\u518D\u731C\u4E00\u6B21");
btnGuessAgain.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {

String strTmp = fileArray[index+1].toString();
index++;
if(index==NUM_IMG)
index =0;
lblImg1.setIcon(new ImageIcon(strTmp));

String strTmp1 = fileArray[index1+10].toString();
index1++;
if(index1==NUM_IMG)
index1 = 0;
lblImg2.setIcon(new ImageIcon(strTmp1));

String strTmp2 = fileArray[index2+18].toString();
index2++;
if(index2==NUM_IMG)
index2 = 0;
lblImg3.setIcon(new ImageIcon(strTmp2));

}
});
btnGuessAgain.setBounds(223, 337, 93, 23);
contentPane.add(btnGuessAgain);
}

private void add(JLabel lblImg1) {
// TODO Auto-generated method stub

}
}