若要使用 Updater 類別,使用者或應用程式必須先以本機方式將 AIR 檔儲存在使用者的電腦上。
備註:
AIR 1.5 所具備的更新架構可協助開發人員賦予 AIR 應用程式良好的更新能力。使用這個架構可能比直接使用 Update 類別的
update()
方法簡單得多。如需詳細資訊,請參閱
使用更新架構
。
下列程式碼會從 URL (http://example.com/air/updates/Sample_App_v2.air) 讀取 AIR 檔,並將 AIR 檔儲存在應用程式儲存目錄中。
ActionScript 範例:
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 範例:
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.");
}
如需詳細資訊,請參閱:
|
|
|