Download files form server on mobile- Flash Builder 4.5

This code works for my on Android app (adapt to you own purposes):

protected var myFile:File;

//using a button to manually download a file

protected function buttonDownload_clickHandler(event:MouseEvent):void

{

var fileUrl:String = "http://path.to.my.file";

var fileName:String = fileUrl.substr(fileUrl.lastIndexOf('/')+1);

myFile = storageDir.resolvePath(fileName);

if (myFile.exists){

//do something with the file

} else {

loadFile(fileUrl);

}

}

protected function loadFile(fileUrl:String):void

{

if (!myFile.exists)

{

trace("View Activate - local file does not exist");

spinner.visible = true;

lbl.text = "Downloading file...";

urlLoader.dataFormat = URLLoaderDataFormat.BINARY;

urlLoader.load(new URLRequest(fileUrl));

urlLoader.addEventListener(Event.COMPLETE,onFileLoaded);

}

else

{

//do something with the file

}

}

// Save the image to the SD card for faster access next time

protected function onFileLoaded(event:Event):void

{

var fileStream:FileStream = new FileStream();

fileStream.open(myFile, FileMode.WRITE);

fileStream.writeBytes(urlLoader.data);

fileStream.close();

spinner.visible = false;

lbl.text="File: "+ myFile.nativePath + " downloaded.";

urlLoader.removeEventListener(Event.COMPLETE,onFileLoaded);

//do something with the file if you want

}

The File.download opens up a native operating-system dialog box before it saves the file and the application can use it, and hence you cannot use this if you are developing for mobile platform.

You can use FileStream API, in case you wish to only access the contents of the remote file.

Please share your use case further, if you face any issues.