Basic Preloaders in ActionScript 3

SWF Example

 

import flash.net.URLRequest;

import flash.display.Stage;

import flash.display.Loader;

import flash.display.LoaderInfo;

import flash.events.Event;

import flash.events.ProgressEvent;

import flash.text.TextField;

 

var theLoader:Loader = new Loader();

var myRequest:URLRequest = new URLRequest("idx.swf");

theLoader.load(myRequest);

 

var loadProgress_txt:TextField = new TextField();

loadProgress_txt.width = 500;

 

theLoader.contentLoaderInfo.addEventListener(Event.INIT,initHandler);

theLoader.contentLoaderInfo.addEventListener(Event.OPEN,showPreloader);

theLoader.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS,showProgress);

theLoader.contentLoaderInfo.addEventListener(Event.COMPLETE,doneLoading);

 

function initHandler(evt:Event):void {

                trace("Init");

                MovieClip(LoaderInfo(evt.target).content).stop();

}

 

function showPreloader(evt:Event):void {

                trace("Show preloader");

                addChild(loadProgress_txt);

}

 

function showProgress(evt:ProgressEvent):void {

                //trace("Show progress")

                loadProgress_txt.text = "loaded:"+evt.bytesLoaded+" from "+evt.bytesTotal;

                trace(loadProgress_txt.text);

}

 

function doneLoading(evt:Event):void {

                trace("Done loading")

                stop();

                removeChild(loadProgress_txt);

                addChild(theLoader);

                MovieClip(LoaderInfo(evt.target).content).play();

}

 

stop();

 

FLV Example

 

import fl.video.*;

import fl.controls.ProgressBarMode;

 

// FLV Playback Pro - http://www.communitymx.com/content/article.cfm?page=1&cid=88033

import com.flashsupport.video.FLVPlaybackPro;

var displayFLV:FLVPlaybackPro = new FLVPlaybackPro();

 

displayFLV.width = 500;

displayFLV.height = 500;

displayFLV.x = 0;

displayFLV.y = 0;

displayFLV.scaleMode = VideoScaleMode.EXACT_FIT;

 

// Prevent full screen takeover

displayFLV.fullScreenTakeOver = false;

 

// Set Variables

var flvSource = flvSourceFile.text; // Obtain FLV filename from parent

trace(flvSourceFile.text);

displayFLV.source = flvSource;

 

// Prevent the FLV from starting until we tell it to

displayFLV.autoPlay = false

 

displayFLV.align = StageAlign.TOP_LEFT;

 

displayFLV.addEventListener(VideoEvent.COMPLETE, goNext);

function goNext(e:VideoEvent):void {

                nextFrame();

}

 

// Create event handler functions to control the progressbar

function progressHandler(event:VideoProgressEvent):void

{

   var bl = Math.round(event.bytesLoaded/1000);

   var bt = Math.round(event.bytesTotal/1000);

 

   // Update progress...

   pb.setProgress(bl,bt);

  

   trace(bl + "/" + bt);

   stuff.text = bl.toString() + "/" + bt.toString();

 

   if (bl >= bt-5) {

                addChild(displayFLV);

                removeChild(pb)

                displayFLV.play()

   }

}

 

// Set progress bar state

pb.mode = ProgressBarMode.MANUAL;

pb.indeterminate = false;

 

// Add listeners and load the video

displayFLV.addEventListener(VideoProgressEvent.PROGRESS, progressHandler);

 

stop();