DFdou's Blog » Remote Proxy http://nwhy.org Life is short,Be yourself. Wed, 08 Sep 2010 05:34:51 +0000 en hourly 1 http://wordpress.org/?v=3.0.1 AAS3WDP-Chapter 6 Remote Proxy 远程代理 http://nwhy.org/aas3wdp-chapter-6-remote-proxy.html http://nwhy.org/aas3wdp-chapter-6-remote-proxy.html#comments Fri, 15 May 2009 02:10:09 +0000 DFdou http://nwhy.org/?p=4291 这里是一个Flickr的远程图片搜索代理实例，对了，Flickr的远程图片搜索需要申请API，别忘了去申请一个。
代码部分，类PhotoSearchProxy.as：
[js]
package{
import flash.events.DataEvent;
import flash.events.Event;
import flash.events.EventDispatcher;
import flash.net.URLLoader;
import flash.net.URLRequest;

public class PhotoSearchProxy extends EventDispatcher{
private static const API_KEY:String="c4643072bfc38caa0257f4c039624cb5";//这是我的Flickr Api_key
private static const FLICKR_URL:String="http://api.flickr.com/services/rest/";//Flickr的api地址

public function PhotoSearchProxy(){}
private function onComplete(_evt:Event):void{
dispatchEvent(new DataEvent(Event.COMPLETE,false,false,XML(_evt.target.data)));
}
public function search(userId:String,tags:String):void{
var loader:URLLoader=new URLLoader();
var request:URLRequest=new URLRequest(PhotoSearchProxy.FLICKR_URL+"?method=flickr.photos.search&user_id="+userId+"&tags="+tags+"&api_key="+PhotoSearchProxy.API_KEY);
loader.addEventListener(Event.COMPLETE,onComplete);
loader.load(request);
}
}
}
[/js]
在loader载入request之后dispatchEvent一个DataEvent。
具体调用部分：
[js]
import PhotoSearchProxy;
var flickr:PhotoSearchProxy=new PhotoSearchProxy();
flickr.addEventListener(Event.COMPLETE,onComplete);
flickr.search("","yellow");
function onComplete(_evt:DataEvent){
trace(_evt.data);
}
[/js]
实际化PhotoSearchProxy之后，调用search方法，load完之后接收dispatchEvent的DataEvent的data并trace。
记得以前看过的一个AIR的RSS阅读器也是这样做的，写了个EventDispatcher的子类，载入RSS源地址后dispatchEvent。。。

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