F4MElement

套件	org.osmf.elements
類別	public class F4MElement
繼承	F4MElement LoadFromDocumentElement ProxyElement MediaElement EventDispatcher Object

語言版本:

ActionScript 3.0

產品版本:

OSMF 1.0

執行階段版本:

Flash Player 10, AIR 1.5

F4MElement is a media element used to load media from F4M files. F4M files are XML documents that adhere to the Flash Media Manifest format, and which represent all of the information needed to load and play a media file.

The basic steps for creating and using an F4MElement are:

Create a new URLResource pointing to the URL of the F4M file.
Create the new F4MElement, passing the URLResource as a parameter.
Create a new MediaPlayer.
Assign the F4MElement to the MediaPlayer's media property.
Control the media using the MediaPlayer's methods, properties, and events.
When done with the F4MElement, set the MediaPlayer's media property to null. This will unload the F4MElement.

Note: It is simplest to use the MediaPlayer class in conjunction with the F4MElement. If you work directly with an F4MElement, then it's important to listen for events related to traits being added and removed. If you use the MediaPlayer class with an F4MElement, then the MediaPlayer will automatically listen for these events for you.

檢視範例

詳細資訊

Flash Media Manifest File Format Specification

公用屬性

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	屬性		定義自
		constructor : Object 類別物件的參照或是特定物件實體的建構函數。	Object
		container : IMediaContainer [唯讀] The media container that this element uses.	MediaElement
		metadataNamespaceURLs : Vector.<String> [唯讀] A Vector containing the namespace URLs for all Metadata objects stored within this MediaElement.	MediaElement
		proxiedElement : MediaElement The MediaElement for which this ProxyElement serves as a proxy, or wrapper.	ProxyElement
		resource : MediaResourceBase The media resource that this media element operates on.	MediaElement
		traitTypes : Vector.<String> [唯讀] A Vector of MediaTraitType values representing the trait types on this media element.	MediaElement

保護屬性

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	屬性		定義自
		blockedTraits : Vector.<String> The set of MediaTraitTypes that this ProxyElement will block.	ProxyElement

公用方法

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	方法		定義自
		F4MElement(resource:MediaResourceBase = null, loader:F4MLoader = null) Constructor.	F4MElement
		addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void 會在 EventDispatcher 物件註冊事件偵聽程式，以便讓偵聽程式收到事件的通知。	EventDispatcher
		addMetadata(namespaceURL:String, metadata:Metadata):void Adds a Metadata object to this MediaElement under the specified namespace URL.	MediaElement
		dispatchEvent(event:Event):Boolean 會將事件傳送到事件流程。	EventDispatcher
		getMetadata(namespaceURL:String):Metadata Returns the Metadata object that is stored under this MediaElement with the specified namespace URL.	MediaElement
		getTrait(type:String):org.osmf.traits:MediaTraitBase Returns the media trait of the specified type.	MediaElement
		hasEventListener(type:String):Boolean 會檢查 EventDispatcher 物件是否有對特定的事件類型註冊偵聽程式。	EventDispatcher
		hasOwnProperty(name:String):Boolean 指出物件是否有已定義的指定屬性。	Object
		hasTrait(type:String):Boolean Determines whether this media element has a media trait of the specified type.	MediaElement
		isPrototypeOf(theClass:Object):Boolean 指出 Object 類別的實體是否位於指定為參數的物件原型鏈中。	Object
		propertyIsEnumerable(name:String):Boolean 指出指定的屬性是否存在，以及是否可列舉。	Object
		removeEventListener(type:String, listener:Function, useCapture:Boolean = false):void 會從 EventDispatcher 物件移除偵聽程式。	EventDispatcher
		removeMetadata(namespaceURL:String):Metadata Removes the Metadata object that was stored under this MediaElement with the specified namespace URL.	MediaElement
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void 為迴圈作業設定動態屬性的可用性。	Object
		toLocaleString():String 傳回代表此物件的字串，根據地區特定慣例進行格式化。	Object
		toString():String 會傳回指定之物件的字串形式。	Object
		valueOf():Object 會傳回指定之物件的基本值。	Object
		willTrigger(type:String):Boolean 檢查此 EventDispatcher 物件是否已註冊事件偵聽程式，或者此物件的任何祖系已為特定事件類型註冊事件偵聽程式。	EventDispatcher

保護方法

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	方法		定義自
		addTrait(type:String, instance:org.osmf.traits:MediaTraitBase):void Adds a new media trait to this media element.	MediaElement
		removeTrait(type:String):org.osmf.traits:MediaTraitBase Removes a media trait from this media element.	MediaElement
		setupTraits():void Sets up the traits for this media element.	MediaElement

事件

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	摘要	定義自
activate	[廣播事件] 當 Flash Player 或 AIR 應用程式取得作業系統焦點並成為作用中時傳送。	EventDispatcher
containerChange	Dispatched when the element's container property changed.	MediaElement
deactivate	[廣播事件] 當 Flash Player 或 AIR 應用程式失去作業系統焦點並成為非作用中時傳送。	EventDispatcher
mediaError	Dispatched when an error which impacts the operation of the media element occurs.	MediaElement
mediaInfo	Dispatched when a info which impacts the operation of the media element is available.	MediaElement
metadataAdd	Dispatched when a Metadata object has been added to this media element.	MediaElement
metadataRemove	Dispatched when a Metadata object has been removed from this media element.	MediaElement
traitAdd	Dispatched when a trait is added to the media element.	MediaElement
traitRemove	Dispatched when a trait is removed from the media element.	MediaElement

建構函式詳細資料

範例如何使用本範例

F4MElementExample.as

package
{
    import flash.display.Sprite;
    import flash.display.StageAlign;
    import flash.display.StageScaleMode;
    
    import org.osmf.elements.F4MElement;
    import org.osmf.elements.VideoElement;
    import org.osmf.media.MediaPlayer;
    import org.osmf.media.MediaPlayerSprite;
    import org.osmf.media.URLResource;
    
    public class F4MElementExample extends Sprite
    {
        public function F4MElementExample()
        {
            super();
            
            stage.scaleMode = StageScaleMode.NO_SCALE;
            stage.align = StageAlign.TOP_LEFT;
            
            var mediaPlayerSprite:MediaPlayerSprite = new MediaPlayerSprite();
            var manifestElement:F4MElement = new F4MElement();
            manifestElement.resource = new URLResource("http://mediapm.edgesuite.net/osmf/content/test/manifest-files/progressive.f4m");
            
            addChild(mediaPlayerSprite);
            mediaPlayerSprite.media = manifestElement;    
            
        }
    }
}

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F4MElement - AS3 OSMF

套件x

語言元素

附錄

套件 org.osmf.elements

	`resource:MediaResourceBase` (default = `null`) — MediaResourceBase that points to the F4M file that this F4MElement will use.

	`loader:F4MLoader` (default = `null`) — F4MLoader used to load the F4M file. If null, an F4MLoader will be created by the F4MElement.