| 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 |
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
Dölj ärvda publika egenskaper
Visa ärvda publika egenskaper| 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 | ||
| Metod | Definieras med | ||
|---|---|---|---|
Construct a new ArrayList using the specified array as its source. | ArrayList | ||
Adds a list of items to the current list, placing them at the end of
the list in the order they are passed. | ArrayList | ||
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 | |
Add the specified item to the end of the list. | ArrayList | ||
Add the item at the specified index. | ArrayList | ||
|
Skickar en händelse till händelseflödet. | EventDispatcher | |
Get the item at the specified index. | ArrayList | ||
Return the index of the item if it is in the list such that
getItemAt(index) == item. | ArrayList | ||
|
Kontrollerar om EventDispatcher-objektet har några avlyssnare registrerade för en viss typ av händelse. | EventDispatcher | |
|
Anger om det finns en egenskap angiven för ett objekt. | Object | |
|
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 | ||
|
Anger om den angivna egenskapen finns och är uppräkningsbar. | Object | |
Remove all items from the list. | ArrayList | ||
|
Tar bort en avlyssnare från EventDispatcher-objektet. | EventDispatcher | |
Removes the specified item from this list, should it exist. | ArrayList | ||
Remove the item at the specified index and return it. | ArrayList | ||
Place the item at the specified index. | ArrayList | ||
|
Anger tillgänglighet för en dynamisk egenskap för slingåtgärder. | Object | |
Return an Array that is populated in the same order as the IList
implementation. | ArrayList | ||
|
Returnerar det här objektets strängrepresentation, formaterad i enlighet med språkspecifika konventioner. | Object | |
[åsidosätt]
Pretty prints the contents of this ArrayList to a string and returns it. | ArrayList | ||
|
Returnerar det angivna objektets primitiva värde. | Object | |
|
Kontrollerar om en händelseavlyssnare är registrerad för det här EventDispatcher-objektet eller något av dess överordnade objekt för den angivna händelsetypen. | EventDispatcher | |
| Metod | Definieras med | ||
|---|---|---|---|
Called when any of the contained items in the list dispatch an
ObjectChange event. | ArrayList | ||
If the item is an IEventDispatcher, watch it for updates. | ArrayList | ||
If the item is an IEventDispatcher, stop watching it for updates. | ArrayList | ||
| Händelse | Sammanfattning | Definieras med | ||
|---|---|---|---|---|
| [utsändningshändelse] Skickas när Flash Player eller AIR får operativsystemfokus och blir aktivt. | EventDispatcher | ||
| Dispatched when the IList has been updated in some way. | ArrayList | |||
| [utsändningshändelse] Skickas när Flash Player eller AIR förlorar operativsystemfokus och blir inaktivt. | EventDispatcher | ||
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():intsource | 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):voiduid | egenskap |
ArrayList | () | 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.
Parametrarsource:Array (default = null) |
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 |
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) |
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
|
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) | |
oldValue:Object (default = null) | |
newValue:Object (default = null) |
Relaterade API-element
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.
|
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.
|
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
|
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.
ReturnerarArray — 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 |
collectionChange | Händelse |
mx.events.CollectionEventegenskap 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 thetype 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 |
Tue Jun 12 2018, 01:40 PM Z