Has anyone been successful with "apk expansion pack" solution through air for android for large apps

Question

We have a 300 MB application which is very video happen and we need to find a solution that packages the content along an install file that is less than 50 MB for the android market.
any help would be greatly appreciated.

Answer 1

In Flash CS6, I built my own downloader for when the app is run the first time. First it creates a list of files to be downloaded then downloads them one at a time. After all files are downloaded I used the ELS to save the download status.
import flash.net.URLRequestHeader;
import flash.net.URLLoader;
import flash.net.URLLoaderDataFormat;
import flash.net.URLRequest;
import flash.filesystem.FileStream;
import flash.filesystem.File;
import flash.filesystem.FileMode;
import flash.utils.ByteArray;
import flash.events.ProgressEvent;
import flash.display.Loader;
import VideoInfo;
import flash.events.IOErrorEvent;
import flash.net.NetworkInfo;
import flash.net.NetworkInterface;
function downloadAllFiles():void {
    //downloads files
    fileIndex = 0;
    downloadNextFile();
function downloadNextFile():void {
    //downloads one file
    if (fileIndex <= video_list.length-1) {
        //progress bar
        //progress_mc.width = 1;
        //progress_txt.text = "";
        status_txt.text = "Download in progress...";
        var fileURL:String           = video_list[fileIndex].videoURL;
        fileName                         = video_list[fileIndex].videoName;
        fileSize                           = video_list[fileIndex].videoSize;
        var fileMimeType:String = video_list[fileIndex].videoMimeType;
        var header:URLRequestHeader = new URLRequestHeader("Content-Length", "0");
        var header2:URLRequestHeader = new URLRequestHeader("Content-Type", fileMimeType);
        fileRequest = new URLRequest(fileURL);
        fileRequest.method = URLRequestMethod.GET;
        fileRequest.contentType = fileMimeType;
        fileRequest.requestHeaders.push(header);
        fileRequest.requestHeaders.push(header2);
        urlLoader = new URLLoader();
        urlLoader.addEventListener(Event.COMPLETE, onDownloadComplete);
        urlLoader.addEventListener(ProgressEvent.PROGRESS, onDownloadProgress);
        urlLoader.addEventListener(IOErrorEvent.IO_ERROR, onDownloadError);
        urlLoader.dataFormat = URLLoaderDataFormat.BINARY;
        urlLoader.load(fileRequest);
    } else {
        trace("All files have been downloaded.");
        wait_txt.text = "";
        status_txt.text = "All files were downloaded.";
        //show continue button
        btn_box_mc.btnLabel.text = "CONTINUE";
        btn_box_mc.visible = true;
        downResBtn.visible = true;
        downResBtn.addEventListener(MouseEvent.CLICK, onDownloadCompleteFunc);
        //saved download status in the local store
        MovieClip(root).setAssetsDownloadStatus();
function onDownloadCompleteFunc(evt:MouseEvent):void {
    //downloads complete handler
    //start app
function onDownloadComplete(evt:Event):void{
    //download complete handler
    status_txt.text = "Downloaded " + fileName + ".";
    //trace(fileName + " downloaded to " + File.applicationStorageDirectory.nativePath);
    var dataD:ByteArray = evt.target.data;
    //save the file
    var fileStream:FileStream = new FileStream();
    var dFile:File = File.applicationStorageDirectory;
    dFile = dFile.resolvePath(fileName);
    fileStream.open(dFile, FileMode.WRITE);
    fileStream.writeBytes(dataD, 0, dataD.length);
    fileStream.addEventListener(Event.COMPLETE, onSaveComplete);
    fileStream.addEventListener(ProgressEvent.PROGRESS, onSaveProgress);
    fileIndex++;
    //accumlated oize
    totalAccumulatedSize += curVideoAccumulatedSize;
    downloadNextFile();
function onDownloadError(evt:IOErrorEvent):void {
    //download error handler
    trace("Error downloading " + fileName);
    wait_txt.text = "";
    status_txt.text = "Error downloading " + fileName + ".";
    //show exit button
    btn_box_mc.btnLabel.text = "QUIT";
    btn_box_mc.visible = true;
    downResBtn.visible = true;
    downResBtn.addEventListener(MouseEvent.CLICK, exitFunc);
function exitFunc(evt:MouseEvent):void {
    //exit
    NativeApplication.nativeApplication.exit(0);
function onDownloadProgress(evt:ProgressEvent):void{
    //download complete handler
    //trace("Progress: " + evt.currentTarget.bytesLoaded + "/" + fileSize);
    //var temp_txt:String = debug_txt.text;
    //debug_txt.text = temp_txt + "\nFile: " + fileName + " (bytes downloaded: " + evt.currentTarget.bytesLoaded + "/" + fileSize + ")";
    curVideoAccumulatedSize = evt.bytesLoaded; //file must reside on a server that doesn't gzip enabled
    var count:Number = fileIndex + 1;
    var perc:Number = Math.round(100*(totalAccumulatedSize + curVideoAccumulatedSize)/totalSize);
    var partialMB:Number = (totalAccumulatedSize + curVideoAccumulatedSize)/1048576;
    progress_txt.text = String(perc) + "% completed (" + String(partialMB.toFixed(1)) + " of " + totalSizeMB.toFixed(1) + " MB)";
    status_txt.text = "Downloading file #" + count + " of " + video_list.length + ":  "  + fileName;
    //progress bar
    progress_mc.width = 480*(partialMB/totalSizeMB);
function onSaveProgress(evt:ProgressEvent):void{
    //save complete handler
    trace("Saving file... ");
function onSaveComplete(evt:Event):void{
    //save complete handler
    trace("File saved.");
function createVideo(fn:String, fs:int, mimetype:String):VideoInfo {
    //returns a video
    var assetsURL:String = "http://mywebsite.com/myvirtualdirectory/";
    var fURL:String = assetsURL + fn;
    var video:VideoInfo = new VideoInfo(fn, fURL, fs, mimetype);
    return video;
function createVideoList():void {
    //creates the list of videos to download
    //populate video list
    video_list.push(createVideo("building2_1.flv", 1858694, "video/x-flv"));
    video_list.push(createVideo("building2_2.flv", 1905661, "video/x-flv"));
    video_list.push(createVideo("building2_3.flv", 1810634, "video/x-flv"));
    video_list.push(createVideo("building2_4.flv", 1994332, "video/x-flv"));
    video_list.push(createVideo("building3_1.flv", 1828362, "video/x-flv"));
    video_list.push(createVideo("building3_2.flv", 2550128, "video/x-flv"));
    video_list.push(createVideo("building4_1.flv", 2249678, "video/x-flv"));
    video_list.push(createVideo("building4_2.flv", 1301540, "video/x-flv"));
    video_list.push(createVideo("building5_1.flv", 3152689, "video/x-flv"));
    video_list.push(createVideo("building5_2.flv", 4258518, "video/x-flv"));
    video_list.push(createVideo("building5_4.flv", 1741195, "video/x-flv"));
    video_list.push(createVideo("building6_1.flv", 3295741, "video/x-flv"));
    video_list.push(createVideo("building7.flv", 1723062, "video/x-flv"));
    video_list.push(createVideo("district1.mp4", 1876220, "video/mp4"));
    video_list.push(createVideo("district3.mp4", 2087587, "video/mp4"));
    video_list.push(createVideo("district6.mp4", 2011591, "video/mp4"));
    video_list.push(createVideo("district8.mp4", 4870888, "video/mp4"));
     video_list.push(createVideo("global1.mp4", 2007542, "video/mp4"));
    video_list.push(createVideo("global2.mp4", 4148857, "video/mp4"));
    video_list.push(createVideo("global3.mp4",  3563990, "video/mp4"));
    video_list.push(createVideo("global4.mp4", 2452995, "video/mp4"));
    //calculate total size
    for (var p=0; p < video_list.length; p++) {
        totalSize += video_list[p].videoSize;
    totalSizeMB = 0.1*Math.round(10*totalSize/1048576);
    //start download
    downloadAllFiles();
var fileName:String;
var fileSize:int;
var fileRequest:URLRequest;
var urlLoader:URLLoader;
var fileIndex:Number = 0;
var curVideoAccumulatedSize:Number = 0;
var totalAccumulatedSize:Number = 0;
var totalSize:Number = 0;
var totalSizeMB:Number = 0;
var video_list:Array = new Array();
//create list of files to be downloaded
createVideoList();
VideoInfo.as
package {
    public class VideoInfo {
        public var videoName:String;
        public var videoURL:String;
        public var videoSize:Number;
        public var videoMimeType:String;
        public function VideoInfo(videoNameP:String, videoURLP:String, videoSizeP:Number, mimetypeP) {
            videoName             = videoNameP;
            videoURL             = videoURLP;
            videoSize            = videoSizeP;
            videoMimeType        = mimetypeP;