DateFormatter

Pacote	mx.formatters
Classe	public class DateFormatter
Herança	DateFormatter Formatter Object
Subclasses	ExpiryDateFormat

Versão da linguagem:

ActionScript 3.0

Versão de produto:

Flex 3

Versões de runtime:

Flash Player 9, AIR 1.1

Ao iniciar com Flex 4.5, a Adobe recomenda que você use a classe de spark.formatters.DateTimeFormatter como uma alternativa a esta classe.

The DateFormatter class uses a format String to return a formatted date and time String from an input String or a Date object. You can create many variations easily, including international formats.

If an error occurs, an empty String is returned and a String describing the error is saved to the error property. The error property can have one of the following values:

"Invalid value" means a value that is not a Date object or a is not a recognized String representation of a date is passed to the format() method. (An empty argument is allowed.)
"Invalid format" means either the formatString property is set to empty (""), or there is less than one pattern letter in the formatString property.

The parseDateString() method uses the mx.formatters.DateBase class to define the localized string information required to convert a date that is formatted as a String into a Date object.

Sintaxe MXML expanded

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You use the <mx:DateFormatter> tag to render date and time Strings from a Date object.

The <mx:DateFormatter> tag inherits all of the tag attributes of its superclass, and adds the following tag attributes:

  <mx:DateFormatter
    formatString="Y|M|D|A|E|H|J|K|L|N|S|Q"
   />

Veja os exemplos

Elementos da API relacionados

mx.formatters.DateBase

Propriedades públicas

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	Propriedade		Definido por
		constructor : Object Uma referência ao objeto de classe ou à função de construtor de uma determinada ocorrência de objeto.	Object
		error : String Description saved by the formatter when an error occurs.	Formatter
		formatString : String The mask pattern.	DateFormatter

Propriedades protegidas

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	Propriedade		Definido por
		resourceManager : IResourceManager [somente leitura] A reference to the object which manages all of the application's localized resources.	Formatter

Métodos públicos

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	Método		Definido por
		DateFormatter() Constructor.	DateFormatter
		format(value:Object):String [substituir] Generates a date-formatted String from either a date-formatted String or a Date object.	DateFormatter
		hasOwnProperty(name:String):Boolean Indica se um objeto tem uma propriedade especificada definida.	Object
		isPrototypeOf(theClass:Object):Boolean Indica se uma ocorrência da classe Object está na cadeia de protótipos do objeto especificado como o parâmetro.	Object
		parseDateString(str:String):Date [estático] Converts a date that is formatted as a String into a Date object.	DateFormatter
		propertyIsEnumerable(name:String):Boolean Indica se a propriedade especificada existe e é enumerável.	Object
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void Define a disponibilidade de uma propriedade dinâmica para operações de repetição.	Object
		toLocaleString():String Retorna a representação da string deste objeto, formatado segundo as convenções específicas para a localidade.	Object
		toString():String Retorna a representação de string do objeto especificado.	Object
		valueOf():Object Retorna o valor primitivo do objeto especificado.	Object

Métodos protegidos

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	Método		Definido por
		resourcesChanged():void This method is called when a Formatter is constructed, and again whenever the ResourceManager dispatches a "change" Event to indicate that the localized resources have changed in some way.	Formatter

Detalhes da propriedade

formatString

propriedade

formatString:String

Versão da linguagem:

ActionScript 3.0

Versão de produto:

Flex 3

Versões de runtime:

Flash Player 9, AIR 1.1

The mask pattern.

You compose a pattern String using specific uppercase letters, for example: YYYY/MM.

The DateFormatter pattern String can contain other text in addition to pattern letters. To form a valid pattern String, you only need one pattern letter.

The following table describes the valid pattern letters:

Pattern letter	Description
Y	Year. If the number of pattern letters is two, the year is truncated to two digits; otherwise, it appears as four digits. The year can be zero-padded, as the third example shows in the following set of examples: YY = 05 YYYY = 2005 YYYYY = 02005
M	Month in year. The format depends on the following criteria: If the number of pattern letters is one, the format is interpreted as numeric in one or two digits. If the number of pattern letters is two, the format is interpreted as numeric in two digits. If the number of pattern letters is three, the format is interpreted as short text. If the number of pattern letters is four, the format is interpreted as full text. Examples: M = 7 MM= 07 MMM=Jul MMMM= July
D	Day in month. While a single-letter pattern string for day is valid, you typically use a two-letter pattern string. Examples: D=4 DD=04 DD=10
E	Day in week. The format depends on the following criteria: If the number of pattern letters is one, the format is interpreted as numeric in one or two digits. If the number of pattern letters is two, the format is interpreted as numeric in two digits. If the number of pattern letters is three, the format is interpreted as short text. If the number of pattern letters is four, the format is interpreted as full text. Examples: E = 1 EE = 01 EEE = Mon EEEE = Monday
A	am/pm indicator.
J	Hour in day (0-23).
H	Hour in day (1-24).
K	Hour in am/pm (0-11).
L	Hour in am/pm (1-12).
N	Minute in hour. Examples: N = 3 NN = 03
S	Second in minute. Example: SS = 30
Q	Millisecond in second Example: QQ = 78 QQQ = 078
Other text	You can add other text into the pattern string to further format the string. You can use punctuation, numbers, and all lowercase letters. You should avoid uppercase letters because they may be interpreted as pattern letters. Example: EEEE, MMM. D, YYYY at L:NN:QQQ A = Tuesday, Sept. 8, 2005 at 1:26:012 PM

O valor padrão é "MM/DD/YYYY".

Implementação
public function get formatString():String
public function set formatString(value:String):void

Detalhes do construtor

()

Construtor

public function DateFormatter()

Versão da linguagem:

ActionScript 3.0

Versão de produto:

Flex 3

Versões de runtime:

Flash Player 9, AIR 1.1

Constructor.

Detalhes do método

format

()

método

override public function format(value:Object):String

Versão da linguagem:

ActionScript 3.0

Versão de produto:

Flex 3

Versões de runtime:

Flash Player 9, AIR 1.1

Generates a date-formatted String from either a date-formatted String or a Date object. The formatString property determines the format of the output String. If value cannot be formatted, return an empty String and write a description of the error to the error property.

Parâmetros

value:Object — Date to format. This can be a Date object, or a date-formatted String such as "Thursday, April 22, 2004".

Retorna

String — Formatted String. Empty if an error occurs. A description of the error condition is written to the error property.

parseDateString

()

método

public static function parseDateString(str:String):Date

Versão da linguagem:

ActionScript 3.0

Versão de produto:

Flex 3

Versões de runtime:

Flash Player 9, AIR 1.1

Converts a date that is formatted as a String into a Date object. Month and day names must match the names in mx.formatters.DateBase. The hour value in the String must be between 0 and 23, inclusive. The minutes and seconds value must be between 0 and 59, inclusive. The following example uses this method to create a Date object:

      var myDate:Date = DateFormatter.parseDateString("2009-12-02 23:45:30");

Parâmetros

str:String — Date that is formatted as a String.

Retorna

Date — Date object.

Elementos da API relacionados

mx.formatters.DateBase

Exemplos Como usar este exemplo

DateFormatterExample.mxml

<?xml version="1.0" encoding="utf-8"?>
<!-- Simple example to demonstrate the DateFormatter. -->
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
        xmlns:s="library://ns.adobe.com/flex/spark"
        xmlns:mx="library://ns.adobe.com/flex/mx">

    <fx:Script>
        <![CDATA[
            import mx.events.ValidationResultEvent;

            private var vResult:ValidationResultEvent;

            // Event handler to validate and format input.
            private function Format():void {
                vResult = dateVal.validate();
                if (vResult.type == ValidationResultEvent.VALID) {
                    formattedDate.text = dateFormatter.format(dob.text);
                } else {
                    formattedDate.text = "";
                }
            }
        ]]>
    </fx:Script>

    <fx:Declarations>
        <mx:DateFormatter id="dateFormatter" formatString="month: MM, day: DD, year: YYYY"/>
        <mx:DateValidator id="dateVal" source="{dob}" property="text" inputFormat="mm/dd/yyyy"/>
    </fx:Declarations>

    <s:Panel title="DateFormatter Example" width="75%" height="75%" horizontalCenter="0" verticalCenter="0">
        <mx:Form left="10" right="10" top="10" bottom="10">
            <mx:FormItem label="Enter date (mm/dd/yyyy):" width="100%">
                <s:TextInput id="dob" text=""/>
            </mx:FormItem>
            <mx:FormItem label="Formatted date: " width="100%">
                <s:TextInput id="formattedDate" text="" editable="false"/>
            </mx:FormItem>
            <mx:FormItem>
                <s:Button label="Validate and Format" click="Format();"/>
            </mx:FormItem>
        </mx:Form>
    </s:Panel>

</s:Application>

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DateFormatter - AS3 Flex

Classes x

formatString

DateFormatter

format

parseDateString