I am trying to display a string and a BufferedImage onto a JFrame that both come as output from a method. I am not able to separate the String from the image, therefore I need to add both to the JFrame.
Here is the code I have do far and nothing is displaying. Thank you very much for your help in advance.
String path = getUserInfo("abc123"); <-- method that returns a string and a buffered image
BufferedImage image = null;
try {
image = ImageIO.read(new File(path));
} catch (IOException ex) {
Logger.getLogger(InstagramClient.class.getName()).log(Level.SEVERE, null, ex);
}
JFrame f = new JFrame();
f.setSize(400,400);
f.setVisible(true);
ImageIcon icon = new ImageIcon(image);
JLabel label = new JLabel(icon, JLabel.CENTER);
JOptionPane.showMessageDialog(null, label, "icon", -1);
You can render the string over the image using drawString(), as shown here.
Alternatively, you can use label.setText() and rely on the label's horizontal & vertical alignment for positioning, as illustrated here.
Basically, you can use the label's setText method to supply a text value for the label.
You also need to "add" the label to the frame, or it won't display anything.
String path = getUserInfo("abc123"); <-- method that returns a string and a buffered image
BufferedImage image = null;
try {
image = ImageIO.read(new File(path));
} catch (IOException ex) {
Logger.getLogger(InstagramClient.class.getName()).log(Level.SEVERE, null, ex);
}
JFrame f = new JFrame();
ImageIcon icon = new ImageIcon(image);
JLabel label = new JLabel("This is some text", icon, JLabel.CENTER);
f.add(label);
f.setVisible(true);
Hovercraft Full Of Eels actually answered my question. I wanted to return both a String and BufferedImage but now I know that is not possible. Thank you all for your help :)
Related
I am still very new to Java and programming in general. I am trying to display a GIF using Swing and the following code:
JPanel contentPane;
JLabel imageLabel = new JLabel();
public FrostyCanvas(String imageName) {
try {
setDefaultCloseOperation(EXIT_ON_CLOSE);
contentPane = (JPanel) getContentPane();
contentPane.setLayout(new BorderLayout());
setSize(new Dimension(1600, 900));
setTitle("FrostySpirit v1.1.1 (Beta) - FrostyCanvas");
// add the image label
ImageIcon ii = new ImageIcon(this.getClass().getResource(imageName));
imageLabel.setIcon(ii);
contentPane.add(imageLabel, java.awt.BorderLayout.CENTER);
// display target GIF
this.setLocationRelativeTo(null);
this.setVisible(true);
} catch (Exception exception) {
exception.printStackTrace();
}
}
The method call is the following: (in a different class)
FrostyCanvas FC = new FrostyCanvas("old.gif");
The GIF is animated at this point. I then try to replace the GIF with another one using the following method: (in the same class as ForstyCanvas(String imageName))
public void changeGif(String imageName) throws IOException
{
Icon icon; File file;
file = new File(imageName);
icon = new ImageIcon(ImageIO.read(file));
imageLabel.setIcon(icon);
}
I call the method above in a different class using the following code:
FC.changeGif("D:\\new.gif")
The image is successfully replaced. However, now it only shows the very first frame of new.gif and is no longer animated. How can I make the new GIF move?
The way ImageIO reads the image is creating a static image. The thing to do is to use ImageIcon's loader.
ImageIcon replacement = new ImageIcon(file.toURI().toURL());
That way you are using the same method to construct the image icon as you do with the resource / url.
This question already has answers here:
Show an animated BG in Swing
(3 answers)
Closed 5 years ago.
I want to show a gif in java swing.
For show gif I use from these code but in both of them the gif is not moving and it like as an image is static.
first code:
void showGif() {
try {
JPanel panel = new JPanel();
BufferedImage bufferedImage = ImageIO.read(new File("address of gif");
Icon icon = new ImageIcon(bufferedImage);
JLabel label = new JLabel(icon);
label.setVisible(true);
panel.add(label);
} catch (IOException e) {
e.printStackTrace();
}
}
second code:
void showGif() {
try {
ImageIcon imageIcon;
BufferedImage bufferedImage = ImageIO.read(new File("address of gif"));
imageIcon = new ImageIcon(bufferedImage);
JLabel label = new JLabel(imageIcon);
JPanel panel = new JPanel();
label.setVisible(true);
panel.add(label, TOP_ALIGNMENT);
} catch (IOException e) {
e.printStackTrace();
}
}
please help me to show gif correctly.
You ImageIcon in this case will be showing just the first frame of the GIF.
You can add the GIF to a JLabel, which you can add to the JPanel. Check this out for further help.
This is so frustrated. The code only work on manual generated but not work in auto generate ???
There is an image in project "Bird.png".
public ComboBox() {
initComponents();
try {
image = ImageIO.read(new File("Bird.png"));
lblShow = new JLabel(new ImageIcon(image.getScaledInstance(300, 300, Image.SCALE_SMOOTH)));
} catch (Exception e) {
}
}
This is my manual generate code :
public MainFrame(){
setDefaultCloseOperation(EXIT_ON_CLOSE);
setSize(600,400);
//create new panel and add panel to frame
JPanel pnlImg=new JPanel();
add(pnlImg);
//create new label for showing image
JLabel lblShowImg;
BufferedImage image = null;
try {
image = ImageIO.read(new File("1.jpg"));
} catch (IOException ex) {
Logger.getLogger(MainFrame.class.getName()).log(Level.SEVERE, null, ex);
}
ImageIcon ii=new ImageIcon(image.getScaledInstance(300,300,Image.SCALE_SMOOTH));
lblShowImg=new JLabel(ii);
/*add label to panel */
pnlImg.add(lblShowImg);
/* show frame*/
setVisible(true);
}
Why is this not working?
public ComboBox() {
initComponents();
try {
image = ImageIO.read(new File("Bird.png"));
lblShow = new JLabel(new ImageIcon(image.getScaledInstance(300, 300, Image.SCALE_SMOOTH)));
} catch (Exception e) {
}
}
Likely due to your not taking layout managers into account, but the truth is, as written it is impossible to say
You never show where you add the JLabel to any container
You don't indicate what layout manager the container is using
You haven't posted a valid mcve.
To possibly solve this --
allow NetBeans to generate a JPanel
Add your JLabel to your own JPanel, one whose layout you control.
Add both to a JFrame (respecting its contentPane's layout) that you display.
How can I change my images when an action is performed? My images are stored in the project.
Declared images
image = new ImageIcon ("1.jpg");
image2 = new ImageIcon ("3.jpg");
image3 = new ImageIcon ("2.jpg");
picLabel = new JLabel(image);
ActionListener Class
public void actionPerformed(ActionEvent e){
if(e.getSource().equals(A)) {
image = new ImageIcon ("1.jpg");
//picLabel = new JLabel(image); didn't work
} else if(e.getSource().equals(B)) {
image = new ImageIcon ("2.jpg");
//picLabel = new JLabel(image2); didn't work
} else if(e.getSource().equals(C)) {
image = new ImageIcon ("3.jpg");
//picLabel = new JLabel(image3); didn't work
}
}
If you assign a new JLabel to the picLabel label, you create a new object that is not part of your UI. The existing JLabel in your UI is referenced by picLabel, so calling
picLabel.setIcon(image);
should set the Icon for the existing JLabel.
You must call
picLabel.setIcon(image);
Keep a reference to picLabel in your class and in the action listener call picLabel.setIcon(new ImageIcon("Whatever.jpg")); to change the picture.
public class image {
JFrame pen = new JFrame();
public image () {
pen.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
pen.setBounds(150, 100, 613, 231);
pen.setVisible(true);
try {
URL url = new URL("http://images2.layoutsparks.com/1/56178/castle-stone-window-grey.jpg");
BufferedImage bI = ImageIO.read(url);
ImageIO.write(bI, "jpg", new File("C:\\kibAr.jpg"));
} catch (IOException e) {
e.printStackTrace();
}
}
}
I dont have error but dont work why?(I want to use BufferedImage)
And how i can set the window background this graphic?
Sory for my bad english
If by work you mean display the BufferedImage on the frame, then that's because there's no code where you're actually adding it to the frame at all!
You may wish to have a look here for some examples of how to do this.
The quickest way would probably be something along the lines of:
JLabel picLabel = new JLabel(new ImageIcon(bI));
pen.add(picLabel);