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The ApplicationUpdater object dispatches the updateStatus event
after the updater successfully downloads and interprets the update
descriptor file. The default behavior is to start downloading the
update file if it is available. If you cancel the default behavior,
you can call the downloadUpdate() method to resume
the update process:
appUpdater.downloadUpdate();
Calling this method causes the updater to asynchronously download
the update version of the AIR file.
The downloadUpdate() method can dispatch the
following events:
UpdateEvent.DOWNLOAD_START—The connection
to the server was established. When using ApplicationUpdaterUI library,
this event displays a dialog box with a progress bar to track the
download progress.
ProgressEvent.PROGRESS—Dispatched periodically
as file download progresses.
DownloadErrorEvent.DOWNLOAD_ERROR—Dispatched
if there is an error while connecting or downloading the update
file. It is also dispatched for invalid HTTP statuses (such as “404
- File not found”). This event has an errorID property,
an integer defining additional error information. An additional subErrorID property
may contain more error information.
UpdateEvent.DOWNLOAD_COMPLETE—The updater
has downloaded and interpreted the update descriptor file successfully.
If you do not cancel this event, the ApplicationUpdater version
proceeds to install the update version. In the ApplicationUpdaterUI
version, the user is presented with a dialog box that gives them
the option to proceed.
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