loading external jpegs w/ buttons

[TRJNET]

For example I have a target mc named "target_mc" and I have a image that would load per button. Now I've dealt with regular preloaders, and sound class preloaders, but I'm kinda confused as to how-to preload the jpeg loading percentage into a dynamic textfield, this kinda reminds me of making a basic mp3 preloader as shown below, any suggestions would be great.

sound_1 = new Sound();
sound_1.loadSound("http://themakers.com/sounds/atmospheres_1.mp3", true);
function checkLoad(){
var percentLoaded = (sound_1.getBytesLoaded()/sound_1.getBytesTotal())*100;
progress.text = Math.round(percentLoaded)
message.text = "MEK - Far From Home";

}
checkProgress = setInterval(checkLoad, 1000);

[TRJNET]

k I remember someone on here showing me an example of how-to load any jpeg on fly dynamically w/ some slick AS on a button:

So just say i had a list of buttons, each button would call & load a jpeg dynamically from the same directory, my trouble is figuring out the proper AS to make that jpeg preload and show the percentage in a dynamic textfield named "percent" and the main target mc would be called "target_mc", heres a site with good examples of this method being used throughout the site:

http://www.n-graph.com/hello.html

[TRJNET]

hmmm the coding that Im trying to get working for this list of buttons would similiar to this, the target MC is named "target_mc" and the dynamic textfield instance name is "percent":




on (release) function
target_mc.loadMovie("cat.jpg")
var percentLoaded = (target_mc.getBytesLoaded()/target_mc.getBytesTotal())*100;
percent.text = Math.round(percentLoaded)

}

-----------------------------------
So the script above would go on each button, and for the example above, upon button release, it will load the jpeg dynamically and also show the download progress percentage into a dynamic textifeld. Now you might be wondering why would anyone need this, 2 reasons:

It's a good method to make flash photo galleries, and it only downloads the pictures that the user wants to see (on the listing) therefore making the overall movie less in weight for file size and not needing to preload every image with the rest of movie, versus downloading specific files when needed while still viewing the flash movie. So in general, its a good method for the fact it doesnt force the flash client to download everything which they might not want to see.

[stcymrk]

i've got the same situation.

the problem i'm seeing is that... getBytesLoaded() and getBytesTotal()used on the empty mc(holderClip) that gets the jpg loaded into it are both equal to 0 when the script checks them... therefore it assumes its loaded and skips ahead.

i'm trying this ...

//blah
holderClip.loadMovie("img.jpg");
//blah
if(holderClip.getBytesLoaded() < holderClip.getBytesTotal()){
gotoAndPlay(blah);
}else{
gotoAndPlay(blah);
}


but when it check ... they both equal 0, so it plays instead of waiting. grrr.

[stcymrk]

hmm... this seems to work for me. i added another check to see if getBytesLoaded() < 1 to make sure its not comparing 0 to 0.


if (loadedBytes < totalBytes || loadedBytes < 1) {
gotoAndPlay("blah");
} else {
gotoAndPlay("blah");
}

[TRJNET]

Originally posted by TRJNET
heres a site with good examples of this method being used throughout the site:

http://www.n-graph.com/hello.html

I checked out the AS for that site using a decompiler and I found out that example, wasn't preloading jpegs but it was really loading swf's dynamically and have a preloader in each external swf, I found it quite interesting and I tested it out for myself and realized, what's the point of loading jpegs when u can load swf's which can do more Plus it was easier to use swf's that have their own preloaders.

I'll post a link to my prototype when it's ready.