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出于显而易见的原因，我在我的游戏中实现了 MouseListener；用户需要能够点击看板。
问题不在于单击面板本身，而在于重置按钮 resetBoard 和鼠标监听器。当我单击按钮时，电路板发生变化，但是当单击被释放时，电路板再次发生变化。考虑到我的所有操作都在 public void mouseClicked(MouseEvent e) block 下，我找不到任何地方可以解释为什么它在按下和释放时都会发生变化。我有空的 mouseReleased、mouseEntered、mouseExited、mousePressed。
基本上，有人能帮我理解为什么当只有 mouseClicked 不为空时，板会在鼠标按下和向上(以相同的 Action )时重置。
哦，我知道我不需要所有这些导入，只是我确实曾经使用过它们，但我忘了将它们取出来，因为我对当前的问题太着迷了。
对于重复的内容感到抱歉...以及其中的所有内容。这是我目前知道的唯一方法。
谢谢!
public class Blox implements ActionListener {
private final String gameVersion = "Blox - v1.0.2";
private ImageIcon purpleBlock = new ImageIcon();
private ImageIcon redBlock = new ImageIcon();
private ImageIcon blueBlock = new ImageIcon();
private ImageIcon greenBlock = new ImageIcon();
private ImageIcon closeImage = new ImageIcon();
private JButton block1 = new JButton();
private JButton block2 = new JButton();
private JButton block3 = new JButton();
private JButton block4 = new JButton();
private JButton block5 = new JButton();
private JButton block6 = new JButton();
private JButton block7 = new JButton();
private JButton block8 = new JButton();
private JButton block9 = new JButton();
private JButton block10 = new JButton();
private JButton block11 = new JButton();
private JButton block12 = new JButton();
private JButton block13 = new JButton();
private JButton block14 = new JButton();
private JButton block15 = new JButton();
private JButton block16 = new JButton();
private JButton block17 = new JButton();
private JButton block18 = new JButton();
private JButton block19 = new JButton();
private JButton block20 = new JButton();
private JButton block21 = new JButton();
private JButton block22 = new JButton();
private JButton block23 = new JButton();
private JButton block24 = new JButton();
private JButton block25 = new JButton();
private JButton block26 = new JButton();
private JButton block27 = new JButton();
private JButton block28 = new JButton();
private JButton block29 = new JButton();
private JButton block30 = new JButton();
private JButton block31 = new JButton();
private JButton block32 = new JButton();
private JButton block33 = new JButton();
private JButton block34 = new JButton();
private JButton block35 = new JButton();
private JButton block36 = new JButton();
private JButton block37 = new JButton();
private JButton block38 = new JButton();
private JButton block39 = new JButton();
private JButton block40 = new JButton();
private JButton block41 = new JButton();
private JButton block42 = new JButton();
private JButton block43 = new JButton();
private JButton block44 = new JButton();
private JButton block45 = new JButton();
private JButton block46 = new JButton();
private JButton block47 = new JButton();
private JButton block48 = new JButton();
private JButton block49 = new JButton();
// Error console init
private JLabel errorMessage = new JLabel();
private JPanel errorBg = new JPanel();
private JButton closeError = new JButton();
// Score/UI Inits
private JButton resetBoard = new JButton("Reset Board");
/**
* 700 x 480 Frame Size
* Sets Up and displays initial scene.
*
*/
private void game() {
// Initialize mainFrame
JFrame mainFrame = new JFrame(gameVersion);
Dimension minSize = new Dimension(700,480);
mainFrame.setMinimumSize(minSize);
mainFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
mainFrame.setLayout(null);
mainFrame.setResizable(false);
try {
mainFrame.setContentPane(new JLabel(new ImageIcon(
ImageIO.read(new File("bggrad.jpg")))));
} catch (IOException e) {
e.printStackTrace();
}
// Setup Block Images
try {
purpleBlock.setImage(ImageIO.read(new File("purpleBlock.png")));
redBlock.setImage(ImageIO.read(new File("redBlock.png")));
blueBlock.setImage(ImageIO.read(new File("blueBlock.png")));
greenBlock.setImage(ImageIO.read(new File("greenBlock.png")));
closeImage.setImage(ImageIO.read(new File("close.jpg")));
} catch (IOException e) {
e.printStackTrace();
}
// Sets up error message panel
// Only displayed if error occurs on ActionListener
errorMessage.setText("");
errorMessage.setForeground(Color.black);
Font newLabelFont = new Font(errorMessage.getFont().getName(),
Font.BOLD,errorMessage.getFont().getSize());
errorMessage.setFont(newLabelFont);
closeError.setIcon(closeImage);
closeError.setBounds(0,0,24,24);
errorBg.setBounds(0,430,700,30);
errorBg.setBackground(Color.lightGray);
errorBg.add(closeError);
errorBg.add(errorMessage);
errorBg.setVisible(false);
// Sets up Score/UI Portions of Screen
resetBoard.setBounds(60,363,175,25);
resetBoard.setVisible(true);
resetBoard.addActionListener(this);
// Randomize and add Images to each JButton
gameReset();
// Add Listeners to each block
block1.addActionListener(this);
block2.addActionListener(this);
block3.addActionListener(this);
block4.addActionListener(this);
block5.addActionListener(this);
block6.addActionListener(this);
block7.addActionListener(this);
block8.addActionListener(this);
block9.addActionListener(this);
block10.addActionListener(this);
block11.addActionListener(this);
block12.addActionListener(this);
block13.addActionListener(this);
block14.addActionListener(this);
block15.addActionListener(this);
block16.addActionListener(this);
block17.addActionListener(this);
block18.addActionListener(this);
block19.addActionListener(this);
block20.addActionListener(this);
block21.addActionListener(this);
block22.addActionListener(this);
block23.addActionListener(this);
block24.addActionListener(this);
block25.addActionListener(this);
block26.addActionListener(this);
block27.addActionListener(this);
block28.addActionListener(this);
block29.addActionListener(this);
block30.addActionListener(this);
block31.addActionListener(this);
block32.addActionListener(this);
block33.addActionListener(this);
block34.addActionListener(this);
block35.addActionListener(this);
block36.addActionListener(this);
block37.addActionListener(this);
block38.addActionListener(this);
block39.addActionListener(this);
block40.addActionListener(this);
block41.addActionListener(this);
block42.addActionListener(this);
block43.addActionListener(this);
block44.addActionListener(this);
block45.addActionListener(this);
block46.addActionListener(this);
block47.addActionListener(this);
block48.addActionListener(this);
block49.addActionListener(this);
// Set Block Locations
block1.setBounds(300,50,50,50);
block2.setBounds(350,50,50,50);
block3.setBounds(400,50,50,50);
block4.setBounds(450,50,50,50);
block5.setBounds(500,50,50,50);
block6.setBounds(550,50,50,50);
block7.setBounds(600,50,50,50);
block8.setBounds(300,100,50,50);
block9.setBounds(350,100,50,50);
block10.setBounds(400,100,50,50);
block11.setBounds(450,100,50,50);
block12.setBounds(500,100,50,50);
block13.setBounds(550,100,50,50);
block14.setBounds(600,100,50,50);
block15.setBounds(300,150,50,50);
block16.setBounds(350,150,50,50);
block17.setBounds(400,150,50,50);
block18.setBounds(450,150,50,50);
block19.setBounds(500,150,50,50);
block20.setBounds(550,150,50,50);
block21.setBounds(600,150,50,50);
block22.setBounds(300,200,50,50);
block23.setBounds(350,200,50,50);
block24.setBounds(400,200,50,50);
block25.setBounds(450,200,50,50);
block26.setBounds(500,200,50,50);
block27.setBounds(550,200,50,50);
block28.setBounds(600,200,50,50);
block29.setBounds(300,250,50,50);
block30.setBounds(350,250,50,50);
block31.setBounds(400,250,50,50);
block32.setBounds(450,250,50,50);
block33.setBounds(500,250,50,50);
block34.setBounds(550,250,50,50);
block35.setBounds(600,250,50,50);
block36.setBounds(300,300,50,50);
block37.setBounds(350,300,50,50);
block38.setBounds(400,300,50,50);
block39.setBounds(450,300,50,50);
block40.setBounds(500,300,50,50);
block41.setBounds(550,300,50,50);
block42.setBounds(600,300,50,50);
block43.setBounds(300,350,50,50);
block44.setBounds(350,350,50,50);
block45.setBounds(400,350,50,50);
block46.setBounds(450,350,50,50);
block47.setBounds(500,350,50,50);
block48.setBounds(550,350,50,50);
block49.setBounds(600,350,50,50);
// Add blocks to frame
mainFrame.getContentPane().add(block1);
mainFrame.getContentPane().add(block2);
mainFrame.getContentPane().add(block3);
mainFrame.getContentPane().add(block4);
mainFrame.getContentPane().add(block5);
mainFrame.getContentPane().add(block6);
mainFrame.getContentPane().add(block7);
mainFrame.getContentPane().add(block8);
mainFrame.getContentPane().add(block9);
mainFrame.getContentPane().add(block10);
mainFrame.getContentPane().add(block11);
mainFrame.getContentPane().add(block12);
mainFrame.getContentPane().add(block13);
mainFrame.getContentPane().add(block14);
mainFrame.getContentPane().add(block15);
mainFrame.getContentPane().add(block16);
mainFrame.getContentPane().add(block17);
mainFrame.getContentPane().add(block18);
mainFrame.getContentPane().add(block19);
mainFrame.getContentPane().add(block20);
mainFrame.getContentPane().add(block21);
mainFrame.getContentPane().add(block22);
mainFrame.getContentPane().add(block23);
mainFrame.getContentPane().add(block24);
mainFrame.getContentPane().add(block25);
mainFrame.getContentPane().add(block26);
mainFrame.getContentPane().add(block27);
mainFrame.getContentPane().add(block28);
mainFrame.getContentPane().add(block29);
mainFrame.getContentPane().add(block30);
mainFrame.getContentPane().add(block31);
mainFrame.getContentPane().add(block32);
mainFrame.getContentPane().add(block33);
mainFrame.getContentPane().add(block34);
mainFrame.getContentPane().add(block35);
mainFrame.getContentPane().add(block36);
mainFrame.getContentPane().add(block37);
mainFrame.getContentPane().add(block38);
mainFrame.getContentPane().add(block39);
mainFrame.getContentPane().add(block40);
mainFrame.getContentPane().add(block41);
mainFrame.getContentPane().add(block42);
mainFrame.getContentPane().add(block43);
mainFrame.getContentPane().add(block44);
mainFrame.getContentPane().add(block45);
mainFrame.getContentPane().add(block46);
mainFrame.getContentPane().add(block47);
mainFrame.getContentPane().add(block48);
mainFrame.getContentPane().add(block49);
mainFrame.getContentPane().add(errorBg);
mainFrame.getContentPane().add(resetBoard);
//mainFrame.pack();
mainFrame.setVisible(true);
}
/**
* Checks onClick event for which JButton was clicked
* and changes JButton.setIcon() accordingly.
*
* @param none
* @return none
* @see java.awt.event.*
* @see JButton
* @see setIcon()
* @see getIcon()
*
*/
public void actionPerformed(ActionEvent e) {
if(e.getSource()==resetBoard) {
System.out.println("Resetting");
gameReset();
}
if(e.getSource()==errorBg || e.getSource()==errorMessage) {
errorBg.setVisible(false);
}
if(e.getSource()==block1) {
if(block1.getIcon()==purpleBlock) {
block1.setIcon(blueBlock);
block2.setIcon(redBlock);
block8.setIcon(redBlock);
} else if(block1.getIcon()==blueBlock) {
block1.setIcon(redBlock);
block2.setIcon(greenBlock);
block8.setIcon(greenBlock);
} else if(block1.getIcon()==redBlock) {
block1.setIcon(greenBlock);
block2.setIcon(blueBlock);
block8.setIcon(blueBlock);
} else if(block1.getIcon()==greenBlock) {
block1.setIcon(blueBlock);
block2.setIcon(redBlock);
block8.setIcon(redBlock);
} else {
// Woops! Something went wrong!
errorBg.setVisible(true);
errorMessage.setText("Woops! Something went wrong! @" + e.getSource());
}
}
if(e.getSource()==block2) {
if(block2.getIcon()==purpleBlock) {
block2.setIcon(blueBlock);
block1.setIcon(redBlock);
block3.setIcon(redBlock);
block9.setIcon(redBlock);
} else if(block2.getIcon()==blueBlock) {
block2.setIcon(redBlock);
block1.setIcon(greenBlock);
block3.setIcon(greenBlock);
block9.setIcon(greenBlock);
} else if(block2.getIcon()==redBlock) {
block2.setIcon(greenBlock);
block1.setIcon(blueBlock);
block3.setIcon(blueBlock);
block9.setIcon(blueBlock);
} else if(block2.getIcon()==greenBlock) {
block2.setIcon(blueBlock);
block1.setIcon(redBlock);
block3.setIcon(redBlock);
block9.setIcon(redBlock);
} else {
// Woops! Something went wrong!
errorBg.setVisible(true);
errorMessage.setText("Woops! Something went wrong! @" + e.getSource());
}
}
if(e.getSource()==block3) {
if(block3.getIcon()==purpleBlock) {
block3.setIcon(blueBlock);
block2.setIcon(redBlock);
block4.setIcon(redBlock);
block10.setIcon(redBlock);
} else if(block3.getIcon()==blueBlock) {
block3.setIcon(redBlock);
block2.setIcon(greenBlock);
block4.setIcon(greenBlock);
block10.setIcon(greenBlock);
} else if(block3.getIcon()==redBlock) {
block3.setIcon(greenBlock);
block2.setIcon(blueBlock);
block4.setIcon(blueBlock);
block10.setIcon(blueBlock);
} else if(block3.getIcon()==greenBlock) {
block3.setIcon(blueBlock);
block2.setIcon(redBlock);
block4.setIcon(redBlock);
block10.setIcon(redBlock);
} else {
// Woops! Something went wrong!
errorBg.setVisible(true);
errorMessage.setText("Woops! Something went wrong! @" + e.getSource());
}
}
if(e.getSource()==block4) {
if(block4.getIcon()==purpleBlock) {
block4.setIcon(blueBlock);
block3.setIcon(redBlock);
block5.setIcon(redBlock);
block11.setIcon(redBlock);
} else if(block4.getIcon()==blueBlock) {
block4.setIcon(redBlock);
block3.setIcon(greenBlock);
block5.setIcon(greenBlock);
block11.setIcon(greenBlock);
} else if(block4.getIcon()==redBlock) {
block4.setIcon(greenBlock);
block3.setIcon(blueBlock);
block5.setIcon(blueBlock);
block11.setIcon(blueBlock);
} else if(block4.getIcon()==greenBlock) {
block4.setIcon(blueBlock);
block3.setIcon(redBlock);
block5.setIcon(redBlock);
block11.setIcon(redBlock);
} else {
// Woops! Something went wrong!
errorBg.setVisible(true);
errorMessage.setText("Woops! Something went wrong! @" + e.getSource());
}
}
if(e.getSource()==block5) {
if(block5.getIcon()==purpleBlock) {
block5.setIcon(blueBlock);
block4.setIcon(redBlock);
block6.setIcon(redBlock);
block12.setIcon(redBlock);
} else if(block5.getIcon()==blueBlock) {
block5.setIcon(redBlock);
block4.setIcon(greenBlock);
block6.setIcon(greenBlock);
block12.setIcon(greenBlock);
} else if(block5.getIcon()==redBlock) {
block5.setIcon(greenBlock);
block4.setIcon(blueBlock);
block6.setIcon(blueBlock);
block12.setIcon(blueBlock);
} else if(block5.getIcon()==greenBlock) {
block5.setIcon(blueBlock);
block4.setIcon(redBlock);
block6.setIcon(redBlock);
block12.setIcon(redBlock);
} else {
// Woops! Something went wrong!
errorBg.setVisible(true);
errorMessage.setText("Woops! Something went wrong! @" + e.getSource());
}
}
if(e.getSource()==block5) {
if(block5.getIcon()==purpleBlock) {
block5.setIcon(blueBlock);
block4.setIcon(redBlock);
block6.setIcon(redBlock);
block12.setIcon(redBlock);
} else if(block5.getIcon()==blueBlock) {
block5.setIcon(redBlock);
block4.setIcon(greenBlock);
block6.setIcon(greenBlock);
block12.setIcon(greenBlock);
} else if(block5.getIcon()==redBlock) {
block5.setIcon(greenBlock);
block4.setIcon(blueBlock);
block6.setIcon(blueBlock);
block12.setIcon(blueBlock);
} else if(block5.getIcon()==greenBlock) {
block5.setIcon(blueBlock);
block4.setIcon(redBlock);
block6.setIcon(redBlock);
block12.setIcon(redBlock);
} else {
// Woops! Something went wrong!
errorBg.setVisible(true);
errorMessage.setText("Woops! Something went wrong! @" + e.getSource());
}
}
if(e.getSource()==block6) {
if(block6.getIcon()==purpleBlock) {
block6.setIcon(blueBlock);
block5.setIcon(redBlock);
block7.setIcon(redBlock);
block13.setIcon(redBlock);
} else if(block6.getIcon()==blueBlock) {
block6.setIcon(redBlock);
block5.setIcon(greenBlock);
block7.setIcon(greenBlock);
block13.setIcon(greenBlock);
} else if(block6.getIcon()==redBlock) {
block6.setIcon(greenBlock);
block5.setIcon(blueBlock);
block7.setIcon(blueBlock);
block13.setIcon(blueBlock);
} else if(block6.getIcon()==greenBlock) {
block6.setIcon(blueBlock);
block5.setIcon(redBlock);
block7.setIcon(redBlock);
block13.setIcon(redBlock);
} else {
// Woops! Something went wrong!
errorBg.setVisible(true);
errorMessage.setText("Woops! Something went wrong! @" + e.getSource());
}
}
if(e.getSource()==block7) {
if(block7.getIcon()==purpleBlock) {
block7.setIcon(blueBlock);
block6.setIcon(redBlock);
block14.setIcon(redBlock);
//block13.setIcon(redBlock);
} else if(block7.getIcon()==blueBlock) {
block7.setIcon(redBlock);
block6.setIcon(greenBlock);
block14.setIcon(greenBlock);
//block13.setIcon(greenBlock);
} else if(block7.getIcon()==redBlock) {
block7.setIcon(greenBlock);
block6.setIcon(purpleBlock);
block14.setIcon(purpleBlock);
//block13.setIcon(blueBlock);
} else if(block7.getIcon()==greenBlock) {
block7.setIcon(purpleBlock);
block6.setIcon(blueBlock);
block14.setIcon(blueBlock);
//block13.setIcon(redBlock);
} else {
// Woops! Something went wrong!
errorBg.setVisible(true);
errorMessage.setText("Woops! Something went wrong! @" + e.getSource());
}
}
if(e.getSource()==block8) {
if(block8.getIcon()==purpleBlock) {
block8.setIcon(blueBlock);
block1.setIcon(redBlock);
block9.setIcon(redBlock);
block15.setIcon(redBlock);
} else if(block8.getIcon()==blueBlock) {
block8.setIcon(redBlock);
block1.setIcon(greenBlock);
block9.setIcon(greenBlock);
block15.setIcon(greenBlock);
} else if(block8.getIcon()==redBlock) {
block8.setIcon(greenBlock);
block1.setIcon(purpleBlock);
block9.setIcon(purpleBlock);
block15.setIcon(purpleBlock);
} else if(block8.getIcon()==greenBlock) {
block8.setIcon(purpleBlock);
block1.setIcon(blueBlock);
block9.setIcon(blueBlock);
block15.setIcon(blueBlock);
} else {
// Woops! Something went wrong!
errorBg.setVisible(true);
errorMessage.setText("Woops! Something went wrong! @" + e.getSource());
}
}
if(e.getSource()==block9) {
if(block9.getIcon()==purpleBlock) {
block9.setIcon(blueBlock);
block2.setIcon(redBlock);
block10.setIcon(redBlock);
block8.setIcon(redBlock);
block16.setIcon(redBlock);
} else if(block9.getIcon()==blueBlock) {
block9.setIcon(redBlock);
block2.setIcon(greenBlock);
block10.setIcon(greenBlock);
block8.setIcon(greenBlock);
block16.setIcon(greenBlock);
} else if(block9.getIcon()==redBlock) {
block9.setIcon(greenBlock);
block2.setIcon(purpleBlock);
block10.setIcon(purpleBlock);
block8.setIcon(purpleBlock);
block16.setIcon(purpleBlock);
} else if(block9.getIcon()==greenBlock) {
block9.setIcon(purpleBlock);
block2.setIcon(blueBlock);
block10.setIcon(blueBlock);
block8.setIcon(blueBlock);
block16.setIcon(blueBlock);
} else {
// Woops! Something went wrong!
errorBg.setVisible(true);
errorMessage.setText("Woops! Something went wrong! @" + e.getSource());
}
}
}
public void gameReset() {
// Add Tiles to mainFrame
block1.setIcon(randomizer());
block2.setIcon(randomizer());
block3.setIcon(randomizer());
block4.setIcon(randomizer());
block5.setIcon(randomizer());
block6.setIcon(randomizer());
block7.setIcon(randomizer());
block8.setIcon(randomizer());
block9.setIcon(randomizer());
block10.setIcon(randomizer());
block11.setIcon(randomizer());
block12.setIcon(randomizer());
block13.setIcon(randomizer());
block14.setIcon(randomizer());
block15.setIcon(randomizer());
block16.setIcon(randomizer());
block17.setIcon(randomizer());
block18.setIcon(randomizer());
block19.setIcon(randomizer());
block20.setIcon(randomizer());
block21.setIcon(randomizer());
block22.setIcon(randomizer());
block23.setIcon(randomizer());
block24.setIcon(randomizer());
block25.setIcon(randomizer());
block26.setIcon(randomizer());
block27.setIcon(randomizer());
block28.setIcon(randomizer());
block29.setIcon(randomizer());
block30.setIcon(randomizer());
block31.setIcon(randomizer());
block32.setIcon(randomizer());
block33.setIcon(randomizer());
block34.setIcon(randomizer());
block35.setIcon(randomizer());
block36.setIcon(randomizer());
block37.setIcon(randomizer());
block38.setIcon(randomizer());
block39.setIcon(randomizer());
block40.setIcon(randomizer());
block41.setIcon(randomizer());
block42.setIcon(randomizer());
block43.setIcon(randomizer());
block44.setIcon(randomizer());
block45.setIcon(randomizer());
block46.setIcon(randomizer());
block47.setIcon(randomizer());
block48.setIcon(randomizer());
block49.setIcon(randomizer());
}
public ImageIcon randomizer() {
Random r = new Random();
int rNum = r.nextInt(4);
if(rNum==0) {
return purpleBlock;
} else if(rNum==1) {
return redBlock;
} else if(rNum==2) {
return greenBlock;
} else {
return blueBlock;
}
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
new Blox().game();
}
});
}
}
最佳答案
不要将 MouseListener 与 JButton 一起使用，而应使用 ActionListeners。 button tutorial 中详细说明了这一点，我强烈建议您尽快阅读它们。
我发现您的代码存在一个主要问题:
public ImageIcon randomizer() {
try {
purpleBlock.setImage(ImageIO.read(new File("purpleBlock.png")));
redBlock.setImage(ImageIO.read(new File("redBlock.png")));
blueBlock.setImage(ImageIO.read(new File("blueBlock.png")));
greenBlock.setImage(ImageIO.read(new File("greenBlock.png")));
} catch (IOException e) {
e.printStackTrace();
}
Random r = new Random();
int rNum = r.nextInt(4);
if(rNum==0) {
return purpleBlock;
} else if(rNum==1) {
return redBlock;
} else if(rNum==2) {
return greenBlock;
} else {
return blueBlock;
}
}
每当调用 randomizer() 方法时，您都会从文件中重新读取所有色 block 图像。没有必要这样做，因为已经使用正确的图像创建了 ImageIcons，但不仅如此，这可能会痛苦地减慢您的程序。
关于java - 鼠标 ActionListener 和鼠标点击 (MouseEvent e)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/15016580/
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