MACROMEDIA FLEX-GETTING STARTED WITH FLEX Manual do Utilizador descarregar pdf (Página 126)

paddingTop="0"

creationComplete="flickReq.send();" backgroundAlpha="0"

backgroundColor="white"

backgroundGradientColors="[0xFFFFFF,0xFFFFFF]">

<mx:Script>

<![CDATA[

import mx.rpc.events.ResultEvent;

import mx.collections.ArrayCollection;

private var images:Array = [];

private var currentImage:int = 0;

private function onFetchResult( event:ResultEvent ) : void {

var items:ArrayCollection = event.result.rss.channel.item as

ArrayCollection;

for each ( var item:Object in items )

images.push( item.thumbnail.url.toString() );

flickImg.source = images[currentImage];

var t:Timer = new Timer( 2000 );

t.addEventListener( TimerEvent.TIMER, onTimer );

t.start();

}

private function onTimer( event:Event ) : void {

currentImage += 1;

if ( currentImage >= images.length )

currentImage = 0;

flickImg.source = images[currentImage];

}

]]>

</mx:Script>

<mx:HTTPService id="flickReq"

url="http://api.flickr.com/services/feeds

/photos_public.gne?format=rss_200_enc"

result="onFetchResult(event)" />

<mx:Image width="100" height="100" id="flickImg">

<mx:filters><mx:DropShadowFilter /></mx:filters>

</mx:Image>

</mx:Application>

At the top of the application I define two methods. The first is

onFetchResult, which handles the response from Flickr and

sets up the list of images. The onFetchResult method also sets

up a timer that calls back to the onTimer method every 2,000

milliseconds (every two seconds) to change the source of the

image. The bottom portion of the example defines the HTTPSer

vice to connect to, and the image object to use to display the

Flickr image.

110 | Chapter 8: Flex for Widgets

1 2 ... 121 122 123 124 125 126 127 128 129 130 131 ... 147 148

Comentários a estes Manuais

Sem comentários

MACROMEDIA FLEX-GETTING STARTED WITH FLEX Manual do Utilizador Página 126

Comentários a estes Manuais

Manuais e produtos relacionados com Manuais de software MACROMEDIA FLEX-GETTING STARTED WITH FLEX