Java

Java RSS

Help! Adding an Image through a method.

•

Join Date: Oct 2009

Posts: 8

Reputation: CuteCat is an unknown quantity at this point

Solved Threads: 0

CuteCat

Offline

Newbie Poster

Help! Adding an Image through a method.

Oct 9th, 2009

I don't know what to do... I've been trying for weeks to figure out the problem. You see, I'm supposed to make a game, as a project for school. Since it's going to be a rather large game, I decided not to flood the main file with a bunch of images and such. Instead, I tried to put the images in another program, as I've learned that the "main" program can call upon the smaller ones.

But... It won't read the image! If I copy the code to the main file then it works perfectly, so why does it make such a fuss when put into another file? I don't know where to turn, please help me even if it's something stupidly easy...

 Help with Code Tags 
 Java Syntax (Toggle Plain Text) 
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
 
public class Panels
{
	static void floorpanel1(int x, int y, Graphics g)
	{
 
		Image fp1 = Toolkit.getDefaultToolkit().getImage("graphics/Scrapfloor1.gif");
		Rectangle hitground = new Rectangle(x, y, 60, 1);
 
		g.drawImage(fp1,x,y, 60, 60,this);
	}
}
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class Panels
{
	static void floorpanel1(int x, int y, Graphics g)
	{

		Image fp1 = Toolkit.getDefaultToolkit().getImage("graphics/Scrapfloor1.gif");
		Rectangle hitground = new Rectangle(x, y, 60, 1);

		g.drawImage(fp1,x,y, 60, 60,this);
	}
}

This is the code for the side-program. I'm still learning as I go along... It's called upon to be in the "paint" part of the main program.

•

Join Date: Apr 2008

Posts: 972

Reputation: JamesCherrill is just really nice

Solved Threads: 146

JamesCherrill JamesCherrill is offline

Offline

Posting Shark

Oct 9th, 2009

If you put that code in your main class then the "this" on line 13 refers to an instance of the main class. When the same code is in class Panels, "this" refers to an instance of Panel. So maybe that's why the drawimage is doing something different?

•

Join Date: Oct 2009

Posts: 8

Reputation: CuteCat is an unknown quantity at this point

Solved Threads: 0

CuteCat

Offline

Newbie Poster

Oct 9th, 2009

That's most likely it - but what do I replace it with? If I just remove it, it won't be recognized. If I try putting in the name of the main program, gameinit, then it thinks it's a program and says it can't recognize it...

•

Join Date: Apr 2008

Posts: 972

Reputation: JamesCherrill is just really nice

Solved Threads: 146

JamesCherrill JamesCherrill is offline

Offline

Posting Shark

Oct 9th, 2009

Can yu pass it as an extra parameter when you call floorpanel1?

•

Join Date: Oct 2009

Posts: 8

Reputation: CuteCat is an unknown quantity at this point

Solved Threads: 0

CuteCat

Offline

Newbie Poster

Oct 9th, 2009

Extra parameter...? I'm sorry, I don't quite understand. How would that help? What would it do?

•

Join Date: Apr 2008

Posts: 972

Reputation: JamesCherrill is just really nice

Solved Threads: 146

JamesCherrill JamesCherrill is offline

Offline

Posting Shark

Oct 9th, 2009

Assuming you are calling floorpanel1 from your main class, you can change the signature of the method to
static void floorpanel1(int x, int y, Graphics g, ImageObserver io)
and use the extra parameter in the drawimage call
g.drawImage(fp1,x,y, 60, 60,io);

When you call it from your main class you can use "this" as the fourth parameter.

ps: If you're not actually using the ImageObserver, you may simply be able to use
g.drawImage(fp1,x,y, 60, 60, null);
... but I haven't tried that myself.

Last edited by JamesCherrill; Oct 9th, 2009 at 2:22 pm.

•

Join Date: Oct 2009

Posts: 8

Reputation: CuteCat is an unknown quantity at this point

Solved Threads: 0

CuteCat

Offline

Newbie Poster

Oct 9th, 2009

I see... I haven't used ImageObserver, so I'll try "null", but if it doesn't work I'll try the IO. Thanks!

•

Join Date: Oct 2009

Posts: 8

Reputation: CuteCat is an unknown quantity at this point

Solved Threads: 0

CuteCat

Offline

Newbie Poster

Oct 15th, 2009

Update! Although the program itself works if I enter "null" instead of "this", the graphic itself won't show up. I imagine that I told it to upload the image to nowhere...

I tried ImageObserver too, but it said it couldn't find it. Do I need a certain package, or add code to the main program?

•

Join Date: Oct 2009

Posts: 8

Reputation: CuteCat is an unknown quantity at this point

Solved Threads: 0

CuteCat

Offline

Newbie Poster

25 Days Ago

Here again... Please help. Through the help of a friend, I've switched from Images to JLabels, but the problems continue! Rather than staying where I tell them to be, the images stubbornly stay at the top center of the screen. Why is this? Not even my friend knows... I suspect that it has to do with the fact that the JLabels are from a side program, but I don't know what can be done about it.

Does anyone here have experience with this situation? Anything that shows JLabels or ImageIcons being called from another program helps!

Thread Tools	Search this Thread
Show Printable Version Email this Page

DaniWeb Message

Cancel Changes