Java 无法更新图像“JLabel设置图标”
!! 我想在读取数组时更新图像的顺序…所以我尝试将图像的目标作为变量,然后在需要更改顺序时更改变量,但这不起作用Java 无法更新图像“JLabel设置图标”,java,swing,Java,Swing,!! 我想在读取数组时更新图像的顺序…所以我尝试将图像的目标作为变量,然后在需要更改顺序时更改变量,但这不起作用 JLabel no3 = new JLabel(); no3.setIcon(new ImageIcon(three)); panel.add(no3); frame.getContentPane().add(panel); frame.validate(); JLabel no4 = new JLabel(); no4.set
JLabel no3 = new JLabel();
no3.setIcon(new ImageIcon(three));
panel.add(no3);
frame.getContentPane().add(panel);
frame.validate();
JLabel no4 = new JLabel();
no4.setIcon(new ImageIcon(four));
panel.add(no4);
frame.getContentPane().add(panel);
frame.validate();
JLabel no5 = new JLabel();
no5.setIcon(new ImageIcon(five));
panel.add(no5);
frame.getContentPane().add(panel);
frame.validate();
当我更新图像目标变量三、四、五等时,点击另一个按钮后,图像不会改变
JButton btnNewButton = new JButton("Solve");
btnNewButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
String text=textField.getText();
int[] arr = Arrays.stream(text.split(" ")).map(String::trim).mapToInt(Integer::parseInt).toArray();
int[] solve= new int[9];
for(int i=0; i<9;i++)
{
solve[i]=arr[i];
switch (i) {
case 0: one="C:\\Users\\Mostafa\\Downloads\\Compressed\\cut_images_LVx5IFG8ujN\\image_part_00"+solve[i]+".jpg";
break;
case 1: two="C:\\Users\\Mostafa\\Downloads\\Compressed\\cut_images_LVx5IFG8ujN\\image_part_00"+solve[i]+".jpg";
break;
case 2: three="C:\\Users\\Mostafa\\Downloads\\Compressed\\cut_images_LVx5IFG8ujN\\image_part_00"+solve[i]+".jpg";
break;
case 3: four="C:\\Users\\Mostafa\\Downloads\\Compressed\\cut_images_LVx5IFG8ujN\\image_part_00"+solve[i]+".jpg";
break;
case 4: five="C:\\Users\\Mostafa\\Downloads\\Compressed\\cut_images_LVx5IFG8ujN\\image_part_00"+solve[i]+".jpg";
break;
case 5: six="C:\\Users\\Mostafa\\Downloads\\Compressed\\cut_images_LVx5IFG8ujN\\image_part_00"+solve[i]+".jpg";
break;
case 6: seven="C:\\Users\\Mostafa\\Downloads\\Compressed\\cut_images_LVx5IFG8ujN\\image_part_00"+solve[i]+".jpg";
break;
case 7: eight="C:\\Users\\Mostafa\\Downloads\\Compressed\\cut_images_LVx5IFG8ujN\\image_part_00"+solve[i]+".jpg";
break;
default: nine="C:\\Users\\Mostafa\\Downloads\\Compressed\\cut_images_LVx5IFG8ujN\\image_part_00"+solve[i]+".jpg";
break;
}
}
所以我尝试将图像的目的地作为变量,然后在需要更改顺序时更改变量,但这不起作用
JLabel no3 = new JLabel();
no3.setIcon(new ImageIcon(three));
panel.add(no3);
frame.getContentPane().add(panel);
frame.validate();
JLabel no4 = new JLabel();
no4.setIcon(new ImageIcon(four));
panel.add(no4);
frame.getContentPane().add(panel);
frame.validate();
JLabel no5 = new JLabel();
no5.setIcon(new ImageIcon(five));
panel.add(no5);
frame.getContentPane().add(panel);
frame.validate();
那当然不行。图标不知道您更改了变量,标签也不知道您更改了图标
因此,代码应该是:
//case 0: one="C:\\Users\\Mostafa\\....";
Icon icon = new ImageIcon("the file name");
no0.setIcon( icon )