我正在尝试用Java构建一个TicTacToe游戏，并将Swing用于GUI。因为我不太了解Swing，所以我正在使用JButton创建图块。最初，所有磁贴都是空白的。
现在，当用户单击空白图块（即空白按钮）时，我想在该按钮上放置一个“ X”或“ O”描绘图像。但是我做不到。任何帮助表示赞赏。我已经尝试过了，但是没有用。
这是我的代码：
/* Showing only required code */
public void run(){
/* Creating blank JButtons */
for (int i = 0; i < 3; i++) {
for(int j = 0; j<3; j++){
tile[i][j] = new JButton("");
tile[i][j].setActionCommand("Tile: (" + String.valueOf(i) + "," + String.valueOf(i) + ")");
/* tile[i][j] has setActionCommand as "Tile: (i,j)" */
panel.add(tile[i][j]);
}
}
panel.setBounds(140, 170, 300, 300);
add(panel);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);
}
/* HERE LIES THE MAIN PROBLEM AS BUTTONS ARE NOT UPDATED AS EXPECTED*/
public void actionPerformed(ActionEvent e) {
// when lefttop corner tile is clicked
if("Tile: (0,0)".equals(e.getActionCommand())){
if(tileDone[0][0] == false){ // checking if its still empty
if(currentPlayer.equals("X")){ // checking if current player is "X"
tile[0][0] = new JButton(new ImageIcon("/home/kaustubh/Desktop /java/TicTacToe/X.png"));
panel.add(tile[0][0]);
panel.repaint();
this.repaint();
System.err.println();
}
else{
tile[0][0] = new JButton(new ImageIcon("/home/kaustubh/Desktop/java/TicTacToe/O.png"));
panel.add(tile[0][0]);
panel.repaint();
this.repaint();
System.err.println();
}
tileDone[0][0] = false;
}
}
}
}
最佳答案
目前尚不清楚为什么要在actionPerformed()中再次添加按钮。如果您打算再次添加按钮，则首先需要删除旧按钮。相反，您可能只想更新图标。
public void actionPerformed(ActionEvent e) {
// when lefttop corner tile is clicked
if("Tile: (0,0)".equals(e.getActionCommand())){
if(tileDone[0][0] == false){ // checking if its still empty
if(currentPlayer.equals("X")){ // checking if current player is "X"
// here...
tile[0][0].setIcon(new ImageIcon("/home/kaustubh/Desktop /java/TicTacToe/X.png"));
//panel.add(tile[0][0]); // remove this
panel.repaint();
this.repaint();
System.err.println();
}