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A native extension is made of two parts:
The ActionScript extension classes access and exchange data with
the native implementation. This access is provided with the ActionScript
class ExtensionContext. Only ActionScript code that is part of an
extension can access the ExtensionContext class methods.
Coding the ActionScript side of your extension includes the following
tasks:
-
Declaring the public interfaces of your ActionScript
extension class.
-
Using the static method
ExtensionContext.createExtensionContext()
to
create an ExtensionContext instance.
-
Using the
call()
method of the ExtensionContext
instance to call methods in the native implementation.
-
Adding event listeners to the ExtensionContext instance to
listen for events dispatched from the native implementation.
-
Using the
dispose()
method to delete the
ExtensionContext instance.
-
Sharing data between the ActionScript side and the native
side. The data shared can be any ActionScript object.
-
Using the
getExtensionDirectory()
method
to access the directory in which the extension is installed. All
information and resources related to the extension are in this directory.
(An exception to this rule exists for iOS devices.)
For examples of native extensions, see
Native extensions for Adobe AIR
.
For more information about the ExtensionContext class, see the
ActionScript 3.0 Reference for the Adobe
Flash Platform
.
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