[英]Giving mulitple Jbuttons the same actionListener
我已經編寫了一個2x2x2的rubiks多維數據集求解器,我想讓用戶更好地輸入他們的多維數據集,目前他們輸入的數字已分配給多維數據集的顏色。 例如0可以代表白色,1可以代表黃色,等等。我一直在研究一個GUI,它是由按鈕組成的2d立方體,單擊它們時會在一系列顏色上循環變化。 到目前為止,這是我所擁有的,但是我無法將actionListener應用於所有按鈕。
public static void main(String[] args) {
final int WINDOW_HEIGHT = 500;
final int WINDOW_WIDTH = 700;
//create a window
window.setTitle("First Window");
window.setSize(WINDOW_WIDTH, WINDOW_HEIGHT);
window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
window.setVisible(true);
window.setResizable(false);
allButtons();
}
private static void allButtons(){
panel.setLayout(null);
window.add(panel);
final JButton button[]=new JButton[23];
for(int i=0;i<button.length;i++){
button[i] = new JButton();
}
panel.add(button[0]);
button[0].setBounds(30, 30, 60, 60);
final Color[] ColorArray = {Color.WHITE, Color.ORANGE,Color.GREEN,Color.RED,Color.BLUE,Color.YELLOW};
button[0].addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
final int stickerNum = 24;
if(stickerNum <= 3){
for(Color i : ColorArray){
button[0].setBackground(i);
cube[Side][0] = 0;
}
}
}
});
}
只需將ActionListener實例分配給變量,然后將其添加到循環中的JButtons中即可。
public static void main(String[] args) {
final int WINDOW_HEIGHT = 500;
final int WINDOW_WIDTH = 700;
//create a window
window.setTitle("First Window");
window.setSize(WINDOW_WIDTH, WINDOW_HEIGHT);
window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
window.setVisible(true);
window.setResizable(false);
allButtons();
}
private static void allButtons(){
panel.setLayout(null);
window.add(panel);
final JButton button[]=new JButton[23];
for(int i=0;i<button.length;i++){
button[i] = new JButton();
}
panel.add(button[0]);
button[0].setBounds(30, 30, 60, 60);
final Color[] ColorArray = {Color.WHITE, Color.ORANGE,Color.GREEN,Color.RED,Color.BLUE,Color.YELLOW};
ActionListener actionListener = new ActionListener(){
public void actionPerformed(ActionEvent e){
final int stickerNum = 24;
if(stickerNum <= 3){
for(Color i : ColorArray){
button[0].setBackground(i);
cube[Side][0] = 0;
}
}
}
};
for(int i=0;i<button.length;i++){
button[i].addActionListener( actionListener);
}
}
您可以像下面這樣創建一個ButtonListener類來存儲索引。 然后,您只需將偵聽器的新實例添加到每個按鈕即可。
public static void main(String[] args) {
final int WINDOW_HEIGHT = 500;
final int WINDOW_WIDTH = 700;
//create a window
window.setTitle("First Window");
window.setSize(WINDOW_WIDTH, WINDOW_HEIGHT);
window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
window.setVisible(true);
window.setResizable(false);
allButtons();
}
private static void allButtons() {
panel.setLayout(null);
window.add(panel);
final JButton button[]=new JButton[23];
for(int i=0;i<button.length;i++){
button[i] = new JButton();
}
panel.add(button[0]);
button[0].setBounds(30, 30, 60, 60);
final Color[] ColorArray = {Color.WHITE, Color.ORANGE,Color.GREEN,Color.RED,Color.BLUE,Color.YELLOW};
class ButtonListener implements ActionListener {
private int buttonIndex;
public ButtonListener(int buttonIndex) {
this.buttonIndex = buttonIndex;
}
@Override
public void actionPerformed(ActionEvent e) {
final int stickerNum = 24;
if(stickerNum <= 3){
for(Color i : ColorArray){
button[buttonIndex].setBackground(i);
cube[Side][0] = 0;
}
}
}
}
for(int i = 0; i < button.length; i++) {
button[i].addActionListener(new ButtonListener(i));
}
}
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