checking for Image loaded

[Mrs Kensington]

I'm making a card game and loading a load of images for all the cards using this code...

for (int i=0; i<52; i++)
{
	URL url = this.getClass().getResource("Resources/" + theDeck.getCard(i).getFilename() + ".jpg");
	cardImages[i] = this.getImage(url);
}

getImage returns straight away regardless of wether its finished loading the image or not. I was wondering if anyone knew how to check if the Image has finished loading or anyway of getting it to return once it has loaded.

Thanks alot

[billrogers]

I can help ya with this... one possibility is to use the MediaTracker class. Here is an short example, but you should check out the MediaTracker class in the doc.

When loading an image over the net you frequently have to allow
for long load times. The MediaTracker class is used to monitor a
resource so that other things can happen (ie. threads) while the
image is loading. However, sometimes you really need for the
image to totally load because you need the height and width
measurements before continuing. The following code fragment
show how to wait for an image to finish loading.

// url is a String containing the URL of the image to load.
MediaTracker tr;
Image im = toolkit.getImage(url);

tr.addImage(im, 0);
tr.waitForID(0);

// at this point the image is finished
// loading and the height and width can
// be determined.
int w = im.getWidth(this);
int h = im.getHeight(this);

Hope this helps
Bill

[billrogers]

I dont remember but I think Media tracker has a wait for all has well, so I would use that in your case. Also I am not sure where you are loading the images, but I would load all the images you need in the beginning that way you have them all at your disposal during runtime which is worth the little bit of extra wait in the initialization.

[Mrs Kensington]

thanks that looks perfect! I'll have a play with it this afternoon!
Oh and yes I am loading all the images up at the beginning!

Mrs K