我堆叠了!!我是一个相对较新的java,我一直在网上搜索解决我的问题没有成功,现在是时候请求你的帮助了。
我不能......(实际上不知道)如何在JButton数组中第二次单击后更改actionlistener(actionPerformed)。请找到下面的代码,以便您可以指导我。
这就是程序现在的表现。
在第一次点击网格时,点击按钮的边框将变为“蓝色”'另一个按钮会将其边界改为红色'。在下一次单击时执行相同的操作。
我需要的是在红色'单击有边框的按钮,让我们说从红色'红色'更改按钮的颜色。到了蓝色'按钮。(x 3个按钮)。
关于如何执行最终结果的逻辑我认为我可以自己做,但我的问题是如何在点击红色边框按钮时更改动作。
非常感谢您的帮助!
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
public class ChangeGrid
{
private JButton[][] bu1 = new JButton[10][10];
public ChangeGrid(JFrame frame)
{
super();
JPanel pCenter = new JPanel();
JPanel pTop = new JPanel();
frame.add(pCenter, BorderLayout.CENTER);
frame.add(pTop, BorderLayout.NORTH);
JPanel Grid10x10 = new JPanel(new GridLayout(10,10));
pCenter.add(Grid10x10);
for(int c = 0; c< 10; c++)
{
for (int r = 0; r< 10; r++)
{
bu1[c][r] = new JButton("X");
Grid10x10.add(bu1[c][r]);
final int i = c;
final int j = r;
bu1[i][j].addActionListener(new ActionListener()
{
@Override
public void actionPerformed(ActionEvent e)
{
int f = (3-1);
bu1[i][j].setBorder(BorderFactory.createLineBorder(Color.BLUE, 2));
if ((j+f)<=9)
{
bu1[i][j+f].setBorder(BorderFactory.createLineBorder(Color.RED, 2));
}
else
{
JOptionPane.showMessageDialog(null,"move your 1st click more to the center");
}
}
});
}
}
}
}
import javax.swing.JFrame;
public class GUIFrame extends JFrame
{
public GUIFrame()
{
super("Grid 10 x 10");
this.setSize(1350, 700);
this.setVisible(true);
this.setResizable(true);
this.setDefaultCloseOperation(GUIFrame.EXIT_ON_CLOSE);
}
}
import javax.swing.JFrame;
public class Main
{
public static void main(String args[])
{
JFrame frame = new GUIFrame();
ChangeGrid pC = new ChangeGrid(frame);
frame.pack();
}
}
答案 0 :(得分:0)
您可以像下一个更改ActionListener
:
bu1[i][j].addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
int f = (3 - 1);
Border border = bu1[i][j].getBorder();
if(border instanceof LineBorder){
LineBorder lBorder = (LineBorder) border;
if(lBorder.getLineColor().equals(Color.RED)){
//red border clicked
redBorderAction(bu1[i][j]);
return;
}
}
defaultAction(i,j,f);
}
});
和其他方法:
private void defaultAction(int i, int j, int f) {
bu1[i][j].setBorder(BorderFactory.createLineBorder(Color.BLUE, 2));
if ((j + f) <= 9) {
bu1[i][j + f].setBorder(BorderFactory.createLineBorder(Color.RED, 2));
} else {
JOptionPane.showMessageDialog(null,"move your 1st click more to the center");
}
}
private void redBorderAction(JButton btn) {
btn.setBorder(BorderFactory.createLineBorder(Color.BLUE, 2));
}