Every Flash project larger than a few hundred kilobytes needs a preloader script to inform visitors on the download progress of the Flash file they are requesting to see. Without a preloader script, visitors are often left staring at a blank screen while the Flash file loads into their browser. Obviously this is unacceptable as you'll lose most visitors after a short time making them wait. Unfortunately Flash does not ship with a preloader component and preloader scripts are not that easy to create so our next project will be generating a collection of preloaders for you various Flash projects. Here's a very simple preloader script and a great place to start. If you open up the Preloader Script Text File in the Work Files folder, you can see this script. I've commented quite liberally but it's actually a rather short script as preloader scripts go. If you go ahead and Copy and Paste this text into Frame 1 of a Flash file right there in the Actions Layer, go ahead, create two frames. In the second frame create a label; Welcome to Frame 2 and then add a large image or I've added an audio file, about a two megabyte audio file. That'll give some beef to this file so we can actually see the preloader in operation. If you don't have much to preload, it'll preload quickly and you won't see the animation. The script here will create a little animation. To see the animation create another layer called Loader Bar and then create a rectangle in that frame there. Convert the rectangle to a movie clip and then name that movie clip lbar, all lowercase. Then add a dynamic text field below that. Make sure it's dynamic text there in the Properties Inspector, label that lpc. That'll match the script provided in the preloader script file. Let's double check that this script has been pasted in correctly here in the Actions Window. I'll be reviewing this script and others in more detail a little bit later in this section of the tutorial. And now let's go ahead and do a Control Test Movie. Now, you won't see the preloader the first time because it loads too quickly probably from your hard drive. Flash is now loading that large audio file into memory. It'll jump right to Frame 2 where your label is but if you go to the player here and choose Simulate Download, then you can actually see the script in operation. The bar, the lbar is growing and then I have a percentage that's going to go from zero to 100 percent. When that gets to 100 percent, it'll then mov the play back head into Frame 2. So this style of preloader requires that you have a very small component of content in Frame 1 and then the rest of your file in Frame 2 or later. The advantage of this script is it's easy and fast and you should be able to get a preloader working within minutes in your Flash project. The limitations to this script is that you cannot easily customize this preloading animation. This creates this bar that grows. It also does not indicate that well visually how much is left to download. Also, it won't move on to the rest of the movie after loading if you refresh the browser. The problem with this type of preloader is that it does not wait for the event completes; only the progress event.progress method and I'll be covering these a little bit later. But suffice it to say here that at the end of the progress event, it dispatches a complete event. This is not the same as waiting for the bytes loaded equals bytes total method that most preloaders use. That happens before the complete event gets dispatched so technically you're moving on to Frame 2 before it technically thinks everything is finished. To look at a more complete, a better script but one that's more complex, open the Preloader 2 File in the Work Files folder. Here you'll notice that I have a graphic bar there and a dynamic text field. In this case though I'll be loading an external file rather than having to create a second frame with my content. My content will actually reside in a separate fla file that's a little bit more convenient. If we go ahead and look at the script here, you'll notice that it's a little bit longer, a little bit more complex. It's actually loading in this case this file right here, the one in green, Menu underscore Mouse underscore Over and .sfw. This will look familiar when I do a Control Test Movie. Let's go ahead and do that so you can look at this. Again, it's going to jump to that file right away because the preloader has not had a chance to really run unless I choose Simulate Download from the Flash Player View Option. Also this one is a little bit smaller than my other file so let's go ahead and set the download settings from dsl to 28.8 and now let's do a Simulate Download so we can actually see the script working. So after it loads, the bar loads up from left to right and then you see a percentage sign on there. Let's actually turn this all the way down to 14.4 so we can see this. Better to put a little bit more content here or slow this down so you can actually see the preloader at work there. So this is a little bit more advanced, sophisticated type of preloader. It's using a little bit of a different type of script. It's harder to work it so I like to start my Flash students off with the first example, the Preloader 1 example. There's a copy actually of the completed file in the Work Files folder labeled Preloader 1 so you can see this right away. We'll look at both of these scripts in more detail later plus some other good preloader scripts but for now, let's explore some of the ways that Flash communicates with other applications such as web browsers, images, videos and other Flash movies. And let's start this exploration in the next movie by exploring some scripts for linking to external web pages and websites.
|Course:||Adobe Flash ActionScript 3.0 for Designers|
|Duration:||9.5 hrs / 101 lessons|
|Captions:||Available on CD and Online University|
WIN XP SP3, OS X 6+, Android 4, iOS 4, Linux
TERMS & CONDITIONS OF USE
BY SUBSCRIBING TO THIS SERVICE, YOU ARE CONSENTING TO BE BOUND BY AND ARE BECOMING A PARTY TO THIS AGREEMENT, THE TERMS AND CONDITIONS OF WHICH SHALL PREVAIL IN GOVERNING YOUR RIGHTS OF USE. BY CLICKING THE "BECOME A MEMBER" BUTTON, THE INDIVIDUAL OR ENTITY LICENSING THE PRODUCT ("YOU") IS CONSENTING TO BE BOUND BY AND IS BECOMING A PARTY TO THIS AGREEMENT. IF LICENSEE DOES NOT AGREE TO ALL OF THE TERMS OF THIS AGREEMENT, THE BUTTON INDICATING "BECOME A MEMBER" MUST NOT BE SELECTED, AND LICENSEE MUST NOT INSTALL OR USE THE SOFTWARE.
"VTC" refers to Virtual Training Company,
"You" refers to the user or subscriber.
"Software" refers to the VTC training content and software.
2. LICENSE: VTC hereby grants to You a worldwide, non-royalty bearing, non-exclusive license to use the Software according to the provisions contained herein and subject to payment of the applicable subscription fees.
3. RESTRICTIONS: You may not do any of the following:
Save the Software to Your hard disk or other storage
medium; permit others to use the Software except as specified by addendum;
modify, reverse engineer, decompile, or disassemble the Software; make
derivative works based on the Software; publish or otherwise disseminate
the Software. VTC, Inc., VTC Online University, and the Virtual Training
Company site is owned and operated by VTC, Inc. as a corporation of
All materials on this site are the property of VTC unless otherwise specified. No material from these pages may be copied, reproduced, republished, downloaded, uploaded, posted, transmitted, or distributed in any way. Modification of the materials or use of the materials for any other purpose is a violation of U.S. copyright law and other proprietary rights. For purposes of this Agreement, the use of any such material on any other web site or networked computer environment is prohibited.
4. FEES: The rights granted under this Agreement
are effective only upon payment of the subscription fees, which are
strictly non-refundable other than as expressly provided herein. The
term "monthly subscription" is defined as any 30 day period.
The term "yearly subscription" is defined as one 365 day
period. A yearly subscription ends on the same numerical date as it
began (example July 28, 2004 to July 28, 2005).
The VTC Online University is access to every VTC training tutorial in our library. You pay a flat fee for access to these titles. You are billed according to your renewal selection below, and can renew monthly, yearly, or in any other increment offered. If you choose to be billed monthly, you will be billed every 30 days for the subscription until you request the subscription be cancelled. Our terms of service state that you must cancel a monthly subscription at least two business days before your renewal date. These two days give us enough time to ensure that you will not be charged again.
5. LIMITED WARRANTY: VTC warrants that the Software, if operated as directed, will substantially achieve the functionality described. VTC does not warrant, however, that Your use of the Software will be uninterrupted or that the operation of the Software will be error-free or secure. In addition, the security mechanisms implemented by the Software have inherent limitations, and You must determine that the Software sufficiently meets Your requirements. VTC also warrants that the media containing the Software, if provided by VTC, is free from defects in material from the date You acquired the Software. VTC's sole liability for any breach of this warranty shall be, in VTC's sole discretion: (i) to replace Your defective media or Software; or (ii) to advise You how to achieve substantially the same functionality with the Software as described; or (iii) if the above remedies are impracticable, to refund the subscription fee You paid for the Software. Only if You inform VTC of Your problem with the Software during the applicable subscription period will VTC be obligated to honor this warranty. VTC will use reasonable commercial efforts to repair, replace, advise, or refund pursuant to the foregoing warranty within thirty (30) days of being so notified. If any modifications are made to the Software by You during the warranty period; if the medium is subjected to accident, abuse, or improper use; or if You violate the terms of this Agreement, then this warranty shall immediately terminate. This warranty shall not apply if the Software is used on or in conjunction with hardware or software other than the unmodified version of hardware and software with which the Software was designed to be used as described.
THIS IS A LIMITED WARRANTY, AND IT IS THE ONLY WARRANTY MADE BY VTC OR ITS SUPPLIERS. VTC MAKES NO OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NONINFRINGEMENT OF THIRD PARTIES' RIGHTS. YOU MAY HAVE OTHER STATUTORY RIGHTS. HOWEVER, TO THE FULL EXTENT PERMITTED BY LAW, THE DURATION OF STATUTORILY REQUIRED WARRANTIES, IF ANY, SHALL BE LIMITED TO THE ABOVE LIMITED WARRANTY PERIOD. MOREOVER, IN NO EVENT WILL WARRANTIES PROVIDED BY LAW, IF ANY, APPLY UNLESS THEY ARE REQUIRED TO APPLY BY STATUTE NOTWITHSTANDING THEIR EXCLUSION BY CONTRACT. NO DEALER, AGENT, OR EMPLOYEE OF VTC IS AUTHORIZED TO MAKE ANY MODIFICATIONS, EXTENSIONS, OR ADDITIONS TO THIS LIMITED WARRANTY.
6. PROPRIETARY RIGHTS: VTC reserves all proprietary rights in and to the Software, is protected by copyright and other intellectual property laws and by international treaties. VTC, Inc.
Trademark Notice: VTC, Virtual Training Company,
Inc., The VTC Logo, and VTC Online University, are trademarks of VTC,
Inc. All other company and product names may be trademarks of their
The information contained herein is subject to change without notice. Copyright © 1995 - 2005 VTC, Inc. All rights reserved.
7. TERMINATION: This Agreement shall automatically terminate if You fail to comply with the restrictions described herein. Your obligations to pay outstanding subscription fees shall survive any termination of this Agreement.
8. LIMITATION OF LIABILITY: UNDER NO CIRCUMSTANCES
AND UNDER NO LEGAL THEORY, TORT, CONTRACT, OR OTHERWISE, SHALL VTC
OR ITS SUPPLIERS OR RESELLERS BE LIABLE TO YOU OR ANY OTHER PERSON
FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES OF
ANY CHARACTER, INCLUDING WITHOUT LIMITATION, DAMAGES FOR LOSS OF GOODWILL,
WORK STOPPAGE, COMPUTER FAILURE OR MALFUNCTION, OR ANY AND ALL OTHER
COMMERCIAL DAMAGES OR LOSSES. IN NO EVENT WILL VTC BE LIABLE FOR ANY
DAMAGES IN EXCESS OF THE AMOUNT VTC RECEIVED FROM YOU FOR A LICENSE
TO THE SOFTWARE, EVEN IF VTC SHALL HAVE BEEN INFORMED OF THE POSSIBILITY
DAMAGES, OR FOR ANY CLAIM BY ANY OTHER PARTY. THIS LIMITATION OF LIABILITY SHALL NOT APPLY TO LIABILITY FOR DEATH OR PERSONAL INJURY RESULTING FROM VTC'S NEGLIGENCE TO THE EXTENT APPLICABLE LAW PROHIBITS SUCH LIMITATION. SOME JURISDICTIONS DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THIS EXCLUSION AND LIMITATION MAY NOT APPLY TO YOU.
9. Links To Other Materials: Linked sites found at the VTC site are not under the control of VTC, and we are not responsible for the content of any linked site or any link contained in a linked site. VTC may change links based solely on our discretion, and we reserve the right to terminate any link or linking program at any time. VTC does not, by linking to sites, endorse companies or products to which it links and reserves the right to note as such on its web pages. If you decide to access any of the third party sites linked to this site, you do this entirely at your own risk.
Forums, and Chat are not always screened by VTC, and we are not responsible for the content of any public or open forum content at the site. VTC may change these public forums based solely on our discretion, and we reserve the right to terminate any forum at any time. VTC does not, by allowing these forums, endorse companies or products which may be mentioned in these forums, and reserves the right to note as such on its web pages. If you decide to access any of the public forums in this site, or linked to this site, you do this entirely at your own risk.
9. GOVERNING LAW & DISPUTE RESOLUTION: This Agreement is governed by Virginia law. All disputes between You and VTC shall be finally resolved through arbitration in Winchester, Virginia. This site is controlled by VTC from its offices within the United States of America. VTC makes no representation that materials in the site are appropriate or available for use in other locations, and access to them from territories where their content is illegal is prohibited. Those who choose to access this site from other locations do so on their own initiative and are responsible for compliance with applicable local laws. You may not use or export the Materials in violation of U.S. export laws and regulations. Any claim relating to the Materials shall be governed by the internal substantive laws of the Commonwealth of Virginia, USA.
VTC may revise these Terms at any time by updating this posting. You should visit this page from time to time to review the then-current Terms because they are binding on you. Certain provisions of these Terms may be superseded by expressly designated legal notices or terms located on particular pages at this Site.
If you have any questions regarding this policy,
or your information specifically,
you may email us at:email@example.com.