在GridLayout(2,2)
上使用JPanel
显示4张图片最合适的方法是什么?
问题解决了!!这就是我做到的。它可能效率不高,但它易于阅读且有效:) 请随时告诉我如何改进它!我一直都在寻找改进编码方式的方法!
// Create panel and set layout
pFlag= new JPanel();
pFlag.setLayout(new GridLayout(2,2,10,10));
// Get image
flag1Img = getImage(getCodeBase(), "croatia.png");
flag2Img = getImage(getCodeBase(), "eng.png");
flag3Img = getImage(getCodeBase(), "romania.png");
flag4Img = getImage(getCodeBase(), "spain.png");
// Set as icon
flag1Icon = new ImageIcon(flag1Img);
flag2Icon = new ImageIcon(flag2Img);
flag3Icon = new ImageIcon(flag3Img);
flag4Icon = new ImageIcon(flag4Img);
// Create JLabel
flag1Label = new JLabel();
flag2Label = new JLabel();
flag3Label = new JLabel();
flag4Label = new JLabel();
// Set JLabel alignment
flag1Label.setHorizontalAlignment(JLabel.CENTER);
flag1Label.setVerticalAlignment(JLabel.CENTER);
flag2Label.setHorizontalAlignment(JLabel.CENTER);
flag2Label.setVerticalAlignment(JLabel.CENTER);
flag3Label.setHorizontalAlignment(JLabel.CENTER);
flag3Label.setVerticalAlignment(JLabel.CENTER);
flag4Label.setHorizontalAlignment(JLabel.CENTER);
flag4Label.setVerticalAlignment(JLabel.CENTER);
// Set JLabels as icons
flag1Label.setIcon(flag1Icon);
flag2Label.setIcon(flag2Icon);
flag3Label.setIcon(flag3Icon);
flag4Label.setIcon(flag4Icon);
// Assign icons to images
pFlag.add(flag1Label);
pFlag.add(flag2Label);
pFlag.add(flag3Label);
pFlag.add(flag4Label);
con.add(pFlag);
答案 0 :(得分:1)
只需将图片放入JLabel
s。
JFrame frame = new JFrame("Test");
JPanel panel = new JPanel(new GridLayout(2, 2));
frame.setContentPane(panel);
frame.setVisible(true);
JLabel label1 = new JLabel();
panel.add(label1);
JLabel label2 = new JLabel();
panel.add(label2);
JLabel label3 = new JLabel();
panel.add(label3);
JLabel label4 = new JLabel();
panel.add(label4);
try {
BufferedImage myPicture = ImageIO.read(new File("test.jpg"));
label1.setIcon(new ImageIcon(myPicture));
label2.setIcon(new ImageIcon(myPicture));
label3.setIcon(new ImageIcon(myPicture));
label4.setIcon(new ImageIcon(myPicture));
} catch (Exception e) {
e.printStackTrace();
}
frame.pack();
frame.setMinimumSize(frame.getPreferredSize());
更新更新为Andrew Thompson建议
这是一个非常简单的Applet,它显示来自URL的4个图像。
public class Main extends JApplet {
public void paint(Graphics g) {
JPanel panel = new JPanel(new GridLayout(2, 2));
add(panel);
JLabel label1 = new JLabel();
panel.add(label1);
JLabel label2 = new JLabel();
panel.add(label2);
JLabel label3 = new JLabel();
panel.add(label3);
JLabel label4 = new JLabel();
panel.add(label4);
try {
URL url = new URL("YOU_IMAGE_URL.jpg");
Image myPicture = getImage(url);
label1.setIcon(new ImageIcon(myPicture));
label2.setIcon(new ImageIcon(myPicture));
label3.setIcon(new ImageIcon(myPicture));
label4.setIcon(new ImageIcon(myPicture));
} catch (Exception e) {
e.printStackTrace();
}
}
}