Image in applet
Hi,
I'm trying to import an image to my applet. But when runnning the applet, the image won't appear. I get no errors when compiling, and the url to the imagefile is correct.
Does someone understand why this isn't working? It should work, shouldn't it?
import java.awt.*;
import java.applet.*;
public class ImageDemo extends java.applet.Applet {
private Image image;
public void paint(Graphics gr)
{
gr.drawImage(image, 10,10, this);
}
public void init() {
super.init();
image = getImage(getCodeBase(), "testimage.jpg");
resize(620,220);
}
}
[650 byte] By [
Mexela] at [2007-11-27 11:18:03]
Because your not calling the paint method.
Firstly next time you post use the code tags.
Secondly, add this in somewhere:
public void init() {
}
public void start() {
paint(this.getGraphics);
}
Havent tested this code but *should* work
No, sorry it doesn't work. I already have a init method, which gets the image. And a call to paint(or I guess you mean 'repaint'. You never call 'paint'. Only the VM calls 'paint') shouldn't be necessary, since 'paint' will be called automaticly by the VM when the applet starts.
Yes, I should use code tags. But how do I do that? =) I'm new to this forum.
Appreciate your help.
/Mexel
Mexela at 2007-7-29 14:28:29 >
// <applet code="ImageDemoRx" width="100" height="100"></applet>
import java.applet.Applet;
import java.awt.*;
public class ImageDemoRx extends Applet {
private Image image;
public void paint(Graphics gr) {
gr.drawImage(image, 10,10, this);
}
public void init() {
super.init();
image = getImage(getCodeBase(), "testimage.jpg");
//"images/bclynx.jpg");
loadImage();
resize(620,220);
}
private void loadImage() {
MediaTracker tracker = new MediaTracker(this);
tracker.addImage(image, 0);
try {
tracker.waitForID(0);
} catch(InterruptedException e) {
System.out.println("loading interrupted");
}
int status = tracker.statusID(0, false);
String s = "";
if((status & MediaTracker.LOADING) == MediaTracker.LOADING)
s += "LOADING ";
if((status & MediaTracker.ABORTED) == MediaTracker.ABORTED)
s += "ABORTED ";
if((status & MediaTracker.ERRORED) == MediaTracker.ERRORED)
s += "ERRORED ";
if((status & MediaTracker.COMPLETE) == MediaTracker.COMPLETE)
s += "COMPLETE";
System.out.println("Image loading status = " + s);
}
}
No, that doesn't work for me either.
Mexela at 2007-7-29 14:28:29 >
code taging my code
import java.awt.*;
import java.applet.*;
public class ImageDemo extends java.applet.Applet {
private Image image;
public void paint(Graphics gr)
{
gr.drawImage(image, 10,10, this);
}
public void init() {
super.init();
image = getImage(getCodeBase(), "testimage.jpg");
resize(620,220);
}
}
Mexela at 2007-7-29 14:28:29 >
why are you using applet instead of japplet? why painting directly on an applet rather than painting on a panel of sorts that is added to the applet. I've seen images imported onto imageicons that are shown on jlabels, though i don't know if this works with applets.
I'm missing something. I've tried example code from books and webpages. But they don't work either. I can draw figures and strings in the applet. But no image appears when using 'drawImage'. I don't get it. Anybody?
Mexela at 2007-7-29 14:28:29 >
ok, thanks. I will check that out. But I still want an answer why it doesn't work for me. =)
Mexela at 2007-7-29 14:28:29 >
could your image path be off? I can load into an applet like so:
import java.awt.*;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
public class ImageDemo extends java.applet.Applet
{
private Image image;
private String imageString = ".\\petes\\brief\\img_0109b.jpg";
public void paint(Graphics gr)
{
gr.drawImage(image, 10, 10, this);
}
public void init()
{
super.init();
try
{
File file = new File(imageString);
image = ImageIO.read(file);
resize(620, 220);
}
catch (IOException e)
{
e.printStackTrace();
}
}
}
Another way to do this using JApplet and JPanel is like so:
The JPanel that holds the drawing:
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class DrawOnJPanel extends JPanel
{
private String imageString = ".\\petes\\brief\\img_0109b.jpg";
private ImageIcon myImageIcon = new ImageIcon(imageString);
private JLabel myLabel = new JLabel(myImageIcon);
public DrawOnJPanel()
{
super();
add(myLabel);
}
}
The JApplet that holds the JPanel
import javax.swing.JApplet;
public class DrawOnJApplet extends JApplet
{
private DrawOnJPanel drawPane = new DrawOnJPanel();
public void init()
{
getContentPane().add(drawPane);
}
}
Hmm..my applet says "The applet has not been initialised" when I'm trying your code. I checked the path several times, so it it's not that. But I've discovered that I don't get any errors if I change the filename in the code to some filename that isn't valid. You would expect it to protest then, but it doesn't. Maybe that's a clue.
Mexela at 2007-7-29 14:28:29 >
OK, I'll try that too
Mexela at 2007-7-29 14:28:29 >
Mexel.
If you call the paint method yourself, you can make your applet more flexible (i.e have it with more parameters).
public void init() {
}
public void start() {
paint(this.getGraphics, "This message can change");
}
public void paint(Graphics g, String msg) {
g.drawString("msg", 5, 15);
}
Ill copy some example code of my game that uses images.
import java.applet.*;
import java.awt.*;
public class Client extends Applet implements Runnable {
Image grass;
public void init() {
grass = getImage(getCodeBase(),"image/grass.png");
}
public void start() {
new Thread(this).start();
}
public void run() {
while(true) {
runReturn();
try {
Thread.sleep(10);
} catch(InterruptedException e) {
}
}
}
public void runReturn() {
paint(this.getGraphics());
}
public void paint(Graphics g) {
g.drawImage(grass,0,0,null);
}
}
I tested the above code and it does in fact work.
I wish I could have helped you. At one time I was keen on using Swing and developing UI for users. It didn't take me much time to lose interest in it. A boring job, which requires very less thinking.
Futurisdom_Developer .
When I create a new applet, copy-paste your code and run it, I get "Applet has not been initialised". I think we should start from there. Have you any idea why my applet won't start, but yours will with the same code? I seem to do something wrong.
If I run my own code however(the one above), atleast my applet starts and I can draw figures and text. But I can't display images.
Mexela at 2007-7-29 14:28:33 >
