我是java的新手,我必须在周日完成一个学校项目并遇到问题。
以下是代码:
private abstract class GamePanel {
JPanel panel = null;
}
private class PutPanel extends GamePanel {
JButton putShip1 = new JButton("");
JButton putShip2 = new JButton("");
JButton putShip3 = new JButton("");
JButton putShip4 = new JButton("");
ShipDirection ship1Direction = ShipDirection.NORTH;
ShipDirection ship2Direction = ShipDirection.NORTH;
ShipDirection ship3Direction = ShipDirection.NORTH;
ShipDirection ship4Direction = ShipDirection.NORTH;
JButton startButton = new JButton("Start game");
public PutPanel(){
this.panel = new JPanel();
panel.setSize(200, Torpedo.session.map.size*Field.buttonSize+300);
panel.setBackground(Color.blue);
putShip1.setSize(90, 90);
putShip1.setLocation(55, 5);
putShip1.setIcon(createImageIcon(Torpedo.session.map.shipPath+"/ship1/full_north.png", null));
putShip2.setSize(90, 90);
putShip2.setLocation(55, 105);
putShip2.setIcon(createImageIcon(Torpedo.session.map.shipPath+"/ship2/full_north.png", null));
putShip3.setSize(90, 90);
putShip3.setLocation(55, 205);
putShip3.setIcon(createImageIcon(Torpedo.session.map.shipPath+"/ship3/full_north.png", null));
putShip4.setSize(90, 90);
putShip4.setLocation(55, 305);
putShip4.setIcon(createImageIcon(Torpedo.session.map.shipPath+"/ship4/full_north.png", null));
startButton.setSize(150, 30);
startButton.setLocation(20, Torpedo.session.map.size*Field.buttonSize+205);
panel.add(putShip1);
panel.add(putShip2);
panel.add(putShip3);
panel.add(putShip4);
panel.add(startButton);
startButton.addActionListener(startButton());
startButton.addActionListener(putShip1());
startButton.addActionListener(putShip2());
startButton.addActionListener(putShip3());
startButton.addActionListener(putShip4());
panel.setLayout(null);
panel.setVisible(true);
}
private ActionListener startButton(){
return new ActionListener(){
public void actionPerformed(ActionEvent e) {
putPanel.panel.setVisible(false);
actionPanel.panel.setVisible(true);
}
};
}
private ActionListener putShip1(){
return new ActionListener(){
public void actionPerformed(ActionEvent e) {
selectedShip = 1;
putShip1.setBackground(Color.red);
putShip2.setBackground(null);
putShip3.setBackground(null);
putShip4.setBackground(null);
switch(ship1Direction){
case NORTH: ship1Direction = ShipDirection.EAST;
putShip1.setIcon(createImageIcon(Torpedo.session.map.shipPath+"/ship1/full_east.png", null));
break;
case EAST: ship1Direction = ShipDirection.SOUTH;
putShip1.setIcon(createImageIcon(Torpedo.session.map.shipPath+"/ship1/full_south.png", null));
break;
case SOUTH: ship1Direction = ShipDirection.WEST;
putShip1.setIcon(createImageIcon(Torpedo.session.map.shipPath+"/ship1/full_west.png", null));
break;
case WEST: ship1Direction = ShipDirection.NORTH;
putShip1.setIcon(createImageIcon(Torpedo.session.map.shipPath+"/ship1/full_north.png", null));
break;
}
putShip1.repaint();
putShip2.repaint();
putShip3.repaint();
putShip4.repaint();
panel.repaint();
JOptionPane.showMessageDialog(new JFrame(), "Repaint finished", "Repaint status info", JOptionPane.INFORMATION_MESSAGE); //this here hangs the program when the method is finally called
}
};
当点击其中一个putShip *按钮时,它应该将自己的图标向右旋转90°(意味着将其更改为下一个图像),但在单击startButton之前它不执行任何操作,这会将面板更改为另一个。 (只有第一个按钮的actionListener在这里,其他的'实际上是相同的)。该面板位于JFrame中,其他两个面板却什么也没做。
我怎样才能让它正常工作?
谢谢。
答案 0 :(得分:1)
正如用户Chuk Lee所说,也将ActionListener
添加到putShip*
按钮。下面是一些代码供您添加:
startButton.addActionListener(startButton());
startButton.addActionListener(putShip1());
startButton.addActionListener(putShip2());
startButton.addActionListener(putShip3());
startButton.addActionListener(putShip4());
putShip1.addActionListener(putShip1());
putShip2.addActionListener(putShip2());
putShip3.addActionListener(putShip3());
putShip3.addActionListener(putShip3());
panel.setLayout(null);
panel.setVisible(true);