Java 将图片大小调整为100x100大小,并加载到JLabel中已调整大小的图片中?
我使用Graphics类和drawImage()方法将图片大小调整为100x100。但我无法将调整大小的图像加载到JLabel中。是否可以将调整大小的图片加载到JLabel中Java 将图片大小调整为100x100大小,并加载到JLabel中已调整大小的图片中?,java,image,resize,Java,Image,Resize,我使用Graphics类和drawImage()方法将图片大小调整为100x100。但我无法将调整大小的图像加载到JLabel中。是否可以将调整大小的图片加载到JLabel中 Image image = jfc.getSelectedFile(); ImageIcon Logo = new ImageIcon(image.getPath()); BufferedImage resizedImage = new BufferedImage(width, height, Buffe
Image image = jfc.getSelectedFile();
ImageIcon Logo = new ImageIcon(image.getPath());
BufferedImage resizedImage = new BufferedImage(width, height,
BufferedImage.TYPE_INT_ARGB);
Graphics2D g = resizedImage.createGraphics();
g.drawImage(image, 0, 0, 100, 100, null); // Here i resized. But after that how can i load into Jlabel?
JLabel labelLogo;
labelLogo.setIcon(Logo);
...?
下面是一个示例:您可能需要在
actionPerformed()
中修改组件后更新布局
本文介绍了如何避免使用GetScaleInstance方法,并提供了一些替代方法
请使用代码标记,以便您的条目的格式合理。哦,本文说不要使用GetScaleInstance。。。我冒昧地重新格式化了您评论良好的代码,并添加了
pack()
&setDefaultCloseOperation()
。
public static void main(String[] args) {
JFrame frame = new JFrame();
final Container panel = frame.getContentPane();
panel.setLayout(new FlowLayout());
// create an image an draw in it.
final BufferedImage image = new BufferedImage(
200, 200, BufferedImage.TYPE_INT_ARGB);
Graphics g = image.getGraphics();
g.setColor(Color.RED);
g.drawLine(0, 0, image.getWidth(), image.getHeight());
Icon iImage = new ImageIcon(image);
// create a label with the icon.
final JLabel label = new JLabel(iImage);
panel.add(label);
// create a new button.
JButton button = new JButton("resize");
// add an action to the button.
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
// set the label with a new icon.
BufferedImage bi = new BufferedImage(
100, 100, BufferedImage.TYPE_INT_ARGB);
bi.getGraphics().drawImage(image, 0, 0, null);
label.setIcon(new ImageIcon(bi));
}
});
// add the button to the frame.
panel.add(button);
// open the frame.
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setVisible(true);
}