To use the Updater class, the user or the application must
first save an AIR file locally to the user's computer.
Note: AIR 1.5 includes an update framework, which assists developers
in providing good update capabilities in AIR applications. Using
this framework may be much easier than using the
update() method
of the Update class directly. For details, see
Using the update framework.
The following code reads an AIR file from a URL (http://example.com/air/updates/Sample_App_v2.air)
and saves the AIR file to the application storage directory.
ActionScript example:
var urlString:String = "http://example.com/air/updates/Sample_App_v2.air";
var urlReq:URLRequest = new URLRequest(urlString);
var urlStream:URLStream = new URLStream();
var fileData:ByteArray = new ByteArray();
urlStream.addEventListener(Event.COMPLETE, loaded);
urlStream.load(urlReq);
function loaded(event:Event):void {
urlStream.readBytes(fileData, 0, urlStream.bytesAvailable);
writeAirFile();
}
function writeAirFile():void {
var file:File = File.applicationStorageDirectory.resolvePath("My App v2.air");
var fileStream:FileStream = new FileStream();
fileStream.open(file, FileMode.WRITE);
fileStream.writeBytes(fileData, 0, fileData.length);
fileStream.close();
trace("The AIR file is written.");
}
JavaScript example:
var urlString = "http://example.com/air/updates/Sample_App_v2.air";
var urlReq = new air.URLRequest(urlString);
var urlStream = new air.URLStream();
var fileData = new air.ByteArray();
urlStream.addEventListener(air.Event.COMPLETE, loaded);
urlStream.load(urlReq);
function loaded(event) {
urlStream.readBytes(fileData, 0, urlStream.bytesAvailable);
writeAirFile();
}
function writeAirFile() {
var file = air.File.desktopDirectory.resolvePath("My App v2.air");
var fileStream = new air.FileStream();
fileStream.open(file, air.FileMode.WRITE);
fileStream.writeBytes(fileData, 0, fileData.length);
fileStream.close();
trace("The AIR file is written.");
}
For more information, see:
