ArrayList

Pakket	mx.collections
Klasse	public class ArrayList
Overerving	ArrayList EventDispatcher Object
Implementatie	IList, IExternalizable, IPropertyChangeNotifier
Subklassen	Conflicts

Taalversie:

ActionScript 3.0

Productversie:

Flex 4

Runtimeversies:

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"
  />

Standaard-MXML-eigenschapsource

Openbare eigenschappen

Overerfde openbare eigenschappen verbergen

Overerfde openbare eigenschappen weergeven

	Eigenschap		Gedefinieerd door
		constructor : Object Verwijzing naar het klasseobject of de constructorfunctie van een bepaalde objectinstantie.	Object
		length : int [alleen-lezen] 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

Openbare methoden

Overerfde openbare methoden verbergen

Overerfde openbare methoden weergeven

	Methode		Gedefinieerd door
		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 Registreert een gebeurtenislistenerobject bij een object EventDispatcher, zodat de listener een melding van een gebeurtenis ontvangt.	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 Verzendt een gebeurtenis naar de gebeurtenisstroom.	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 Controleert of het object EventDispatcher listeners heeft geregistreerd voor een specifiek type gebeurtenis.	EventDispatcher
		hasOwnProperty(name:String):Boolean Geeft aan of voor een object een opgegeven eigenschap is gedefinieerd.	Object
		isPrototypeOf(theClass:Object):Boolean Geeft aan of een instantie van de klasse Object zich in de prototypeketen van het object bevindt dat als parameter is opgegeven.	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 Geeft aan of de opgegeven eigenschap bestaat en kan worden opgesomd.	Object
		removeAll():void Remove all items from the list.	ArrayList
		removeEventListener(type:String, listener:Function, useCapture:Boolean = false):void Verwijdert een listener uit het object EventDispatcher.	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 Stelt de beschikbaarheid van een dynamische eigenschap voor lusbewerkingen in.	Object
		toArray():Array Return an Array that is populated in the same order as the IList implementation.	ArrayList
		toLocaleString():String Geeft de tekenreeksweergave van dit object weer, geformatteerd volgens de locatiespecifieke conventies.	Object
		toString():String [overschrijven] Pretty prints the contents of this ArrayList to a string and returns it.	ArrayList
		valueOf():Object Retourneert de primitieve waarde van het opgegeven object.	Object
		willTrigger(type:String):Boolean Controleert of een gebeurtenislistener is geregistreerd bij dit object EventDispatcher of een van de voorouders voor het opgegeven type gebeurtenis.	EventDispatcher

Beschermde methoden

	Methode		Gedefinieerd door
		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

Gebeurtenissen

Klik voor meer informatie over gebeurtenissen.

Overerfde gebeurtenissen verbergen

Overerfde gebeurtenissen weergeven

	Overzicht	Gedefinieerd door
activate	[uitgezonden gebeurtenis] Wordt verzonden wanneer Flash Player of de AIR-toepassing de besturingssysteemfocus krijgt en actief wordt.	EventDispatcher
collectionChange	Dispatched when the IList has been updated in some way.	ArrayList
deactivate	[uitgezonden gebeurtenis] Wordt verzonden wanneer Flash Player of de AIR-toepassing de systeemfocus verliest en inactief wordt.	EventDispatcher

Eigenschapdetails

length

eigenschap

length:int [alleen-lezen]

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

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.

Deze eigenschap kan als de bron voor gegevensbinding worden gebruikt. Wanneer deze eigenschap wordt gewijzigd, wordt de gebeurtenis collectionChange verzonden.

Implementatie
public function get length():int

source

eigenschap

source:Array

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

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.

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

uid

eigenschap

uid:String

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Provides access to the unique id for this list.

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

Constructordetails

()

Constructor

public function ArrayList(source:Array = null)

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

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.

Parameters

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

Methodedetails

addAll

()

methode

public function addAll(addList:IList):void

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

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.

Parameters

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

addAllAt

()

methode

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

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

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.

Parameters

	`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

()

methode

public function addItem(item:Object):void

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

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

Parameters

item:Object — the item to add

addItemAt

()

methode

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

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

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.

Parameters

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

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

Gegenereerde uitzondering

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

getItemAt

()

methode

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

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Get the item at the specified index.

Parameters

	`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.

Geretourneerde waarde

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

Gegenereerde uitzondering

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

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

getItemIndex

()

methode

public function getItemIndex(item:Object):int

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

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).

Parameters

item:Object — the item to find

Geretourneerde waarde

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

itemUpdated

()

methode

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

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

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.

Parameters

	`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.)

Verwante API-elementen

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

itemUpdateHandler

()

methode

protected function itemUpdateHandler(event:PropertyChangeEvent):void

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

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.

Parameters

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

removeAll

()

methode

public function removeAll():void

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Remove all items from the list.

removeItem

()

methode

public function removeItem(item:Object):Boolean

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

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

Parameters

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

Geretourneerde waarde

Boolean — Boolean indicating if the item was removed.

removeItemAt

()

methode

public function removeItemAt(index:int):Object

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

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.

Parameters

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

Geretourneerde waarde

Object — The item that was removed.

Gegenereerde uitzondering

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

setItemAt

()

methode

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

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

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.

Parameters

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

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

Geretourneerde waarde

Object — the item that was replaced, null if none

Gegenereerde uitzondering

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

startTrackUpdates

()

methode

protected function startTrackUpdates(item:Object):void

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

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.

Parameters

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

stopTrackUpdates

()

methode

protected function stopTrackUpdates(item:Object):void

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

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.

Parameters

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

toArray

()

methode

public function toArray():Array

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

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

Geretourneerde waarde

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

Gegenereerde uitzondering

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

toString

()

methode

override public function toString():String

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

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

Geretourneerde waarde

String — A String containing the contents of the ArrayList.

Gebeurtenisdetails

collectionChange

Gebeurtenis

Type gebeurtenisobject: mx.events.CollectionEvent
eigenschap CollectionEvent.type = mx.events.CollectionEvent.COLLECTION_CHANGE

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

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

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ArrayList - AS3 Flex

Klassen x

length

source

uid

ArrayList

addAll

addAllAt

addItem

addItemAt

getItemAt

getItemIndex

itemUpdated

itemUpdateHandler

removeAll

removeItem

removeItemAt

setItemAt

startTrackUpdates

stopTrackUpdates

toArray

toString

collectionChange