Creates a URLLoader object.
A URLRequest object specifying the URL to download. If this
parameter is omitted, no load operation begins. If
specified, the load operation begins immediately(see the
load entry for more information).
Indicates the number of bytes that have been loaded thus far during the load operation.
Indicates the total number of bytes in the downloaded data. This property contains 0 while the load operation is in progress and is populated when the operation is complete. Also, a missing Content-Length header will result in bytesTotal being indeterminate.
The data received from the load operation. This property is populated only
when the load operation is complete. The format of the data depends on the
setting of the dataFormat property:
If the dataFormat property is
URLLoaderDataFormat.TEXT, the received data is a string
containing the text of the loaded file.
If the dataFormat property is
URLLoaderDataFormat.BINARY, the received data is a ByteArray
object containing the raw binary data.
If the dataFormat property is
URLLoaderDataFormat.VARIABLES, the received data is a
URLVariables object containing the URL-encoded variables.
Controls whether the downloaded data is received as text
(URLLoaderDataFormat.TEXT), raw binary data
(URLLoaderDataFormat.BINARY), or URL-encoded variables
(URLLoaderDataFormat.VARIABLES).
If the value of the dataFormat property is
URLLoaderDataFormat.TEXT, the received data is a string
containing the text of the loaded file.
If the value of the dataFormat property is
URLLoaderDataFormat.BINARY, the received data is a ByteArray
object containing the raw binary data.
If the value of the dataFormat property is
URLLoaderDataFormat.VARIABLES, the received data is a
URLVariables object containing the URL-encoded variables.
Registers an event listener object with an EventDispatcher object so that the listener receives notification of an event. You can register event listeners on all nodes in the display list for a specific type of event, phase, and priority.
After you successfully register an event listener, you cannot change
its priority through additional calls to addEventListener().
To change a listener's priority, you must first call
removeListener(). Then you can register the listener again
with the new priority level.
Keep in mind that after the listener is registered, subsequent calls to
addEventListener() with a different type or
useCapture value result in the creation of a separate
listener registration. For example, if you first register a listener with
useCapture set to true, it listens only during
the capture phase. If you call addEventListener() again using
the same listener object, but with useCapture set to
false, you have two separate listeners: one that listens
during the capture phase and another that listens during the target and
bubbling phases.
You cannot register an event listener for only the target phase or the bubbling phase. Those phases are coupled during registration because bubbling applies only to the ancestors of the target node.
If you no longer need an event listener, remove it by calling
removeEventListener(), or memory problems could result. Event
listeners are not automatically removed from memory because the garbage
collector does not remove the listener as long as the dispatching object
exists(unless the useWeakReference parameter is set to
true).
Copying an EventDispatcher instance does not copy the event listeners attached to it.(If your newly created node needs an event listener, you must attach the listener after creating the node.) However, if you move an EventDispatcher instance, the event listeners attached to it move along with it.
If the event listener is being registered on a node while an event is being processed on this node, the event listener is not triggered during the current phase but can be triggered during a later phase in the event flow, such as the bubbling phase.
If an event listener is removed from a node while an event is being processed on the node, it is still triggered by the current actions. After it is removed, the event listener is never invoked again(unless registered again for future processing).
The type of event.
Determines whether the listener works in the
capture phase or the target and bubbling phases.
If useCapture is set to
true, the listener processes the
event only during the capture phase and not in the
target or bubbling phase. If
useCapture is false, the
listener processes the event only during the
target or bubbling phase. To listen for the event
in all three phases, call
addEventListener twice, once with
useCapture set to true,
then again with useCapture set to
false.
The priority level of the event listener. The priority is designated by a signed 32-bit integer. The higher the number, the higher the priority. All listeners with priority n are processed before listeners of priority n-1. If two or more listeners share the same priority, they are processed in the order in which they were added. The default priority is 0.
Determines whether the reference to the listener is strong or weak. A strong reference(the default) prevents your listener from being garbage-collected. A weak reference does not.
Class-level member functions are not subject to
garbage collection, so you can set
`useWeakReference` to `true`
for class-level member functions without
subjecting them to garbage collection. If you set
`useWeakReference` to `true`
for a listener that is a nested inner function,
the function will be garbage-collected and no
longer persistent. If you create references to the
inner function(save it in another variable) then
it is not garbage-collected and stays
persistent.
Closes the load operation in progress. Any load operation in progress is immediately terminated. If no URL is currently being streamed, an invalid stream error is thrown.
Dispatches an event into the event flow. The event target is the
EventDispatcher object upon which the dispatchEvent() method
is called.
The Event object that is dispatched into the event flow. If
the event is being redispatched, a clone of the event is
created automatically. After an event is dispatched, its
target property cannot be changed, so you must
create a new copy of the event for redispatching to work.
A value of true if the event was successfully
dispatched. A value of false indicates failure or
that preventDefault() was called on the event.
Checks whether the EventDispatcher object has any listeners registered for
a specific type of event. This allows you to determine where an
EventDispatcher object has altered handling of an event type in the event
flow hierarchy. To determine whether a specific event type actually
triggers an event listener, use willTrigger().
The difference between hasEventListener() and
willTrigger() is that hasEventListener()
examines only the object to which it belongs, whereas
willTrigger() examines the entire event flow for the event
specified by the type parameter.
When hasEventListener() is called from a LoaderInfo
object, only the listeners that the caller can access are considered.
The type of event.
A value of true if a listener of the specified type
is registered; false otherwise.
Sends and loads data from the specified URL. The data can be received as
text, raw binary data, or URL-encoded variables, depending on the value
you set for the dataFormat property. Note that the default
value of the dataFormat property is text. If you want to send
data to the specified URL, you can set the data property in
the URLRequest object.
Note: If a file being loaded contains non-ASCII characters(as found in many non-English languages), it is recommended that you save the file with UTF-8 or UTF-16 encoding as opposed to a non-Unicode format like ASCII.
A SWF file in the local-with-filesystem sandbox may not load data from, or provide data to, a resource that is in the network sandbox.
By default, the calling SWF file and the URL you load must be in exactly the same domain. For example, a SWF file at www.adobe.com can load data only from sources that are also at www.adobe.com. To load data from a different domain, place a URL policy file on the server hosting the data.
You cannot connect to commonly reserved ports. For a complete list of blocked ports, see "Restricting Networking APIs" in the ActionScript 3.0 Developer's Guide.
In Flash Player 10 and later, if you use a multipart Content-Type(for example "multipart/form-data") that contains an upload(indicated by a "filename" parameter in a "content-disposition" header within the POST body), the POST operation is subject to the security rules applied to uploads:
Also, for any multipart Content-Type, the syntax must be valid (according to the RFC2046 standards). If the syntax appears to be invalid, the POST operation is subject to the security rules applied to uploads.
For more information related to security, see the Flash Player Developer Center Topic: Security.
A URLRequest object specifying the URL to download.
Removes a listener from the EventDispatcher object. If there is no matching listener registered with the EventDispatcher object, a call to this method has no effect.
The type of event.
Specifies whether the listener was registered for the
capture phase or the target and bubbling phases. If the
listener was registered for both the capture phase and
the target and bubbling phases, two calls to
removeEventListener() are required to
remove both, one call with useCapture() set
to true, and another call with
useCapture() set to false.
Checks whether an event listener is registered with this EventDispatcher
object or any of its ancestors for the specified event type. This method
returns true if an event listener is triggered during any
phase of the event flow when an event of the specified type is dispatched
to this EventDispatcher object or any of its descendants.
The difference between the hasEventListener() and the
willTrigger() methods is that hasEventListener()
examines only the object to which it belongs, whereas the
willTrigger() method examines the entire event flow for the
event specified by the type parameter.
When willTrigger() is called from a LoaderInfo object,
only the listeners that the caller can access are considered.
The type of event.
A value of true if a listener of the specified type
will be triggered; false otherwise.
Generated using TypeDoc
The URLLoader class downloads data from a URL as text, binary data, or URL-encoded variables. It is useful for downloading text files, XML, or other information to be used in a dynamic, data-driven application.
A URLLoader object downloads all of the data from a URL before making it available to code in the applications. It sends out notifications about the progress of the download, which you can monitor through the
bytesLoadedandbytesTotalproperties, as well as through dispatched events.When loading very large video files, such as FLV's, out-of-memory errors may occur.
When you use this class in Flash Player and in AIR application content in security sandboxes other than then application security sandbox, consider the following security model:
For more information related to security, see the Flash Player Developer Center Topic: Security.
complete Dispatched after all the received data is decoded and placed in the data property of the URLLoader object. The received data may be accessed once this event has been dispatched.
httpResponseStatus Dispatched if a call to the load() method attempts to access data over HTTP, and Adobe AIR is able to detect and return the status code for the request.
httpStatus Dispatched if a call to URLLoader.load() attempts to access data over HTTP. For content running in Flash Player, this event is only dispatched if the current Flash Player environment is able to detect and return the status code for the request.(Some browser environments may not be able to provide this information.) Note that the
httpStatusevent(if any) is sent before(and in addition to) anycompleteorerrorevent.ioError Dispatched if a call to URLLoader.load() results in a fatal error that terminates the download.
open Dispatched when the download operation commences following a call to the
URLLoader.load()method.progress Dispatched when data is received as the download operation progresses.
Note that with a URLLoader object, it is not possible to access the data until it has been received completely. So, the progress event only serves as a notification of how far the download has progressed. To access the data before it's entirely downloaded, use a URLStream object.securityError Dispatched if a call to URLLoader.load() attempts to load data from a server outside the security sandbox. Also dispatched if a call to
URLLoader.load()attempts to load a SWZ file and the certificate is invalid or the digest string does not match the component.