ArrayList

Paket	mx.collections
Klass	public class ArrayList
Arv	ArrayList EventDispatcher Object
Implementerar	IList, IExternalizable, IPropertyChangeNotifier
Underklasser	Conflicts

Språkversion:

ActionScript 3.0

Produktversion:

Flex 4

Körningsmiljöversioner:

Flash Player 10, AIR 1.5

The ArrayList class is a simple implementation of IList that uses a backing Array as the source of the data. Items in the backing Array can be accessed and manipulated using the methods and properties of the IList interface. Operations on an ArrayList instance modify the data source; for example, if you use the removeItemAt() method on an ArrayList, you remove the item from the underlying Array. This base class will not throw ItemPendingErrors but it is possible that a subclass might.

  <mx:ArrayList
  Properties
  source="null"
  />

MXML-standardegenskapsource

Publika egenskaper

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	Egenskap		Definieras med
		constructor : Object En referens till klassobjektet eller konstruktorfunktionen för en given objektinstans.	Object
		length : int [skrivskyddad] Get the number of items in the list.	ArrayList
		source : Array The source array for this ArrayList.	ArrayList
		uid : String Provides access to the unique id for this list.	ArrayList

Publika metoder

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	Metod		Definieras med
		ArrayList(source:Array = null) Construct a new ArrayList using the specified array as its source.	ArrayList
		addAll(addList:IList):void Adds a list of items to the current list, placing them at the end of the list in the order they are passed.	ArrayList
		addAllAt(addList:IList, index:int):void Adds a list of items to the current list, placing them at the position index passed in to the function.	ArrayList
		addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void Registrerar ett händelseavlyssnarobjekt för ett EventDispatcher-objekt så att avlyssnaren får meddelanden om händelser.	EventDispatcher
		addItem(item:Object):void Add the specified item to the end of the list.	ArrayList
		addItemAt(item:Object, index:int):void Add the item at the specified index.	ArrayList
		dispatchEvent(event:Event):Boolean Skickar en händelse till händelseflödet.	EventDispatcher
		getItemAt(index:int, prefetch:int = 0):Object Get the item at the specified index.	ArrayList
		getItemIndex(item:Object):int Return the index of the item if it is in the list such that getItemAt(index) == item.	ArrayList
		hasEventListener(type:String):Boolean Kontrollerar om EventDispatcher-objektet har några avlyssnare registrerade för en viss typ av händelse.	EventDispatcher
		hasOwnProperty(name:String):Boolean Anger om det finns en egenskap angiven för ett objekt.	Object
		isPrototypeOf(theClass:Object):Boolean Anger om en instans av klassen Object finns i prototypkedjan för objektet som anges som parameter.	Object
		itemUpdated(item:Object, property:Object = null, oldValue:Object = null, newValue:Object = null):void Notify the view that an item has been updated.	ArrayList
		propertyIsEnumerable(name:String):Boolean Anger om den angivna egenskapen finns och är uppräkningsbar.	Object
		removeAll():void Remove all items from the list.	ArrayList
		removeEventListener(type:String, listener:Function, useCapture:Boolean = false):void Tar bort en avlyssnare från EventDispatcher-objektet.	EventDispatcher
		removeItem(item:Object):Boolean Removes the specified item from this list, should it exist.	ArrayList
		removeItemAt(index:int):Object Remove the item at the specified index and return it.	ArrayList
		setItemAt(item:Object, index:int):Object Place the item at the specified index.	ArrayList
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void Anger tillgänglighet för en dynamisk egenskap för slingåtgärder.	Object
		toArray():Array Return an Array that is populated in the same order as the IList implementation.	ArrayList
		toLocaleString():String Returnerar det här objektets strängrepresentation, formaterad i enlighet med språkspecifika konventioner.	Object
		toString():String [åsidosätt] Pretty prints the contents of this ArrayList to a string and returns it.	ArrayList
		valueOf():Object Returnerar det angivna objektets primitiva värde.	Object
		willTrigger(type:String):Boolean Kontrollerar om en händelseavlyssnare är registrerad för det här EventDispatcher-objektet eller något av dess överordnade objekt för den angivna händelsetypen.	EventDispatcher

Skyddade metoder

	Metod		Definieras med
		itemUpdateHandler(event:PropertyChangeEvent):void Called when any of the contained items in the list dispatch an ObjectChange event.	ArrayList
		startTrackUpdates(item:Object):void If the item is an IEventDispatcher, watch it for updates.	ArrayList
		stopTrackUpdates(item:Object):void If the item is an IEventDispatcher, stop watching it for updates.	ArrayList

Händelser

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	Sammanfattning	Definieras med
activate	[utsändningshändelse] Skickas när Flash Player eller AIR får operativsystemfokus och blir aktivt.	EventDispatcher
collectionChange	Dispatched when the IList has been updated in some way.	ArrayList
deactivate	[utsändningshändelse] Skickas när Flash Player eller AIR förlorar operativsystemfokus och blir inaktivt.	EventDispatcher

Egenskapsdetaljer

length

egenskap

length:int [skrivskyddad]

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

Get the number of items in the list. An ArrayList should always know its length so it shouldn't return -1, though a subclass may override that behavior.

Den här egenskapen kan användas som källan för databindning. När den här egenskapen ändras, skickas händelsen collectionChange .

Implementering
public function get length():int

source

egenskap

source:Array

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

The source array for this ArrayList. Any changes done through the IList interface will be reflected in the source array. If no source array was supplied the ArrayList will create one internally. Changes made directly to the underlying Array (e.g., calling theList.source.pop() will not cause CollectionEvents to be dispatched.

Implementering
public function get source():Array
public function set source(value:Array):void

uid

egenskap

uid:String

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

Provides access to the unique id for this list.

Implementering
public function get uid():String
public function set uid(value:String):void

Konstruktordetaljer

()

Konstruktor

public function ArrayList(source:Array = null)

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

Construct a new ArrayList using the specified array as its source. If no source is specified an empty array will be used.

Parametrar

source:Array (default = null) — The Array to use as a source for the ArrayList.

Metoddetaljer

addAll

()

metod

public function addAll(addList:IList):void

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

Adds a list of items to the current list, placing them at the end of the list in the order they are passed.

Parametrar

addList:IList — The list of items to add to the current list

addAllAt

()

metod

public function addAllAt(addList:IList, index:int):void

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

Adds a list of items to the current list, placing them at the position index passed in to the function. The items are placed at the index location and placed in the order they are recieved.

Parametrar

	`addList:IList` — The list of items to add to the current list

	`index:int` — The location of the current list to place the new items.

addItem

()

metod

public function addItem(item:Object):void

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

Add the specified item to the end of the list. Equivalent to addItemAt(item, length);

Parametrar

item:Object — the item to add

addItemAt

()

metod

public function addItemAt(item:Object, index:int):void

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

Add the item at the specified index. Any item that was after this index is moved out by one.

Parametrar

	`item:Object` — the item to place at the index

	`index:int` — the index at which to place the item

Utlöser

RangeError — if index is less than 0 or greater than the length

getItemAt

()

metod

public function getItemAt(index:int, prefetch:int = 0):Object

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

Get the item at the specified index.

Parametrar

	`index:int` — the index in the list from which to retrieve the item

	`prefetch:int` (default = `0`) — int indicating both the direction and amount of items to fetch during the request should the item not be local.

Returnerar

Object — the item at that index, null if there is none

Utlöser

	`Error` — if the data for that index needs to be loaded from a remote location

	`RangeError` — if the index < 0 or index >= length

getItemIndex

()

metod

public function getItemIndex(item:Object):int

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

Return the index of the item if it is in the list such that getItemAt(index) == item. Note that in this implementation the search is linear and is therefore O(n).

Parametrar

item:Object — the item to find

Returnerar

int — the index of the item, -1 if the item is not in the list.

itemUpdated

()

metod

public function itemUpdated(item:Object, property:Object = null, oldValue:Object = null, newValue:Object = null):void

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

Notify the view that an item has been updated. This is useful if the contents of the view do not implement IEventDispatcher. If a property is specified the view may be able to optimize its notification mechanism. Otherwise it may choose to simply refresh the whole view.

Parametrar

	`item:Object` — The item within the view that was updated.

	`property:Object` (default = `null`) — A String, QName, or int specifying the property that was updated.

	`oldValue:Object` (default = `null`) — The old value of that property. (If property was null, this can be the old value of the item.)

	`newValue:Object` (default = `null`) — The new value of that property. (If property was null, there's no need to specify this as the item is assumed to be the new value.)

Relaterade API-element

mx.events.CollectionEvent
mx.core.IPropertyChangeNotifier
mx.events.PropertyChangeEvent

itemUpdateHandler

()

metod

protected function itemUpdateHandler(event:PropertyChangeEvent):void

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

Called when any of the contained items in the list dispatch an ObjectChange event. Wraps it in a CollectionEventKind.UPDATE object.

Parametrar

event:PropertyChangeEvent — The event object for the ObjectChange event.

removeAll

()

metod

public function removeAll():void

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

Remove all items from the list.

removeItem

()

metod

public function removeItem(item:Object):Boolean

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

Removes the specified item from this list, should it exist.

Parametrar

item:Object — Object reference to the item that should be removed.

Returnerar

Boolean — Boolean indicating if the item was removed.

removeItemAt

()

metod

public function removeItemAt(index:int):Object

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

Remove the item at the specified index and return it. Any items that were after this index are now one index earlier.

Parametrar

index:int — The index from which to remove the item.

Returnerar

Object — The item that was removed.

Utlöser

RangeError — if index < 0 or index >= length.

setItemAt

()

metod

public function setItemAt(item:Object, index:int):Object

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

Place the item at the specified index. If an item was already at that index the new item will replace it and it will be returned.

Parametrar

	`item:Object` — the new value for the index

	`index:int` — the index at which to place the item

Returnerar

Object — the item that was replaced, null if none

Utlöser

RangeError — if index is less than 0 or greater than or equal to length

startTrackUpdates

()

metod

protected function startTrackUpdates(item:Object):void

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

If the item is an IEventDispatcher, watch it for updates. This method is called by the addItemAt() method, and when the source is initially assigned.

Parametrar

item:Object — The item passed to the addItemAt() method.

stopTrackUpdates

()

metod

protected function stopTrackUpdates(item:Object):void

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

If the item is an IEventDispatcher, stop watching it for updates. This method is called by the removeItemAt() and removeAll() methods, and before a new source is assigned.

Parametrar

item:Object — The item passed to the removeItemAt() method.

toArray

()

metod

public function toArray():Array

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

Return an Array that is populated in the same order as the IList implementation.

Returnerar

Array — An Array populated in the same order as the IList implementation.

Utlöser

Error — if the data is not yet completely loaded from a remote location

toString

()

metod

override public function toString():String

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

Pretty prints the contents of this ArrayList to a string and returns it.

Returnerar

String — A String containing the contents of the ArrayList.

Händelsedetaljer

collectionChange

Händelse

Typ av händelseobjekt: mx.events.CollectionEvent
egenskap CollectionEvent.type = mx.events.CollectionEvent.COLLECTION_CHANGE

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

Dispatched when the IList has been updated in some way.

The CollectionEvent.COLLECTION_CHANGE constant defines the value of the type property of the event object for an event that is dispatched when a collection has changed.

The properties of the event object have the following values. Not all properties are meaningful for all kinds of events. See the detailed property descriptions for more information.

Property	Value
`bubbles`	false
`cancelable`	false
`currentTarget`	The Object that defines the event listener that handles the event. For example, if you use `myButton.addEventListener()` to register an event listener, myButton is the value of the `currentTarget`.
`items`	An Array of objects with information about the items affected by the event. The contents of this field depend on the event kind; for details see the `items` property
`kind`	The kind of event. The valid values are defined in the CollectionEventKind class as constants.
`location`	Location within the target collection of the item(s) specified in the `items` property.
`oldLocation`	the previous location in the collection of the item specified in the `items` property.
`target`	The Object that dispatched the event; it is not always the Object listening for the event. Use the `currentTarget` property to always access the Object listening for the event.
`type`	CollectionEvent.COLLECTION_CHANGE

Juridiska meddelanden | Onlinesekretesspolicy

ArrayList - AS3 Flex

Paketx

Språkelement

Bilagor

Paket mx.collections

length

source

uid

ArrayList

addAll

addAllAt

addItem

addItemAt

getItemAt

getItemIndex

itemUpdated

itemUpdateHandler

removeAll

removeItem

removeItemAt

setItemAt

startTrackUpdates

stopTrackUpdates

toArray

toString

collectionChange