Flex中Object, String, XML, ArrayCollection互转
import mx.collections.ArrayCollection;
import mx.rpc.xml.SimpleXMLEncoder;
import mx.rpc.xml.SimpleXMLDecoder;
import mx.utils.ObjectUtil;
private function xmlToArrayCollection(xml:XML):ArrayCollection{
var xmlDoc:XMLDocument = new XMLDocument(xml.toString());
var decoder:SimpleXMLDecoder = new SimpleXMLDecoder(true);
var resultObj:Object = decoder.decodeXML(xmlDoc);
var ac:ArrayCollection =new ArrayCollection(Array(resultObj.root.list.source.item));
return ac;
}
private function objectToXML(obj:Object):XML {
var qName:QName = new QName(”root”);
var xmlDocument:XMLDocument = new XMLDocument();
var simpleXMLEncoder:SimpleXMLEncoder = new SimpleXMLEncoder(xmlDocument);
var xmlNode:XMLNode = simpleXMLEncoder.encodeValue(obj, qName, xmlDocument);
var xml:XML = new XML(xmlDocument.toString());
return xml;
}
private function objectToArrayCollection(obj:Object):ArrayCollection {
var ac:ArrayCollection = new ArrayCollection(obj as Array);
return ac;
}
private function arrayCollectionToXML(ac:ArrayCollection):XML{
var xml:XML = objectToXML(ac);
return xml;
}
private function init():void{
var arr:Array = new Array();
arr.push({data:0,name:’deva’});
arr.push({data:1,name:’raj’});
var ac:ArrayCollection = new ArrayCollection(arr);
var xml:XML = arrayCollectionToXML(ac);
var newAc:ArrayCollection = xmlToArrayCollection(xml);
trace(newAc[0][0].name);
}
private function objToStr(value:Object,indent:int =0,
refs:Dictionary= null,
namespaceURIs:Array = null,
exclude:Array = null):String{
var str:String;
var refCount:int = 0;
if (value is Date)
{
return value.toString();
}
else if (value is XMLNode)
{
return value.toString();
}
else if (value is Class)
{
return “(” + getQualifiedClassName(value) + “)”;
}
else
{
var classInfo:Object = ObjectUtil.getClassInfo(value, exclude,
{ includeReadOnly: true, uris: namespaceURIs });
var properties:Array = classInfo.properties;
str = “(” + classInfo.name + “)”;
if (refs == null)
refs = new Dictionary(true);
var id:Object = refs[value];
if (id != null)
{
str += “#” + int(id);
return str;
}
if (value != null)
{
str += “#” + refCount.toString();
refs[value] = refCount;
refCount++;
}
var isArray:Boolean = value is Array;
var isDict:Boolean = value is Dictionary;
var prop:*;
indent += 2;
for (var j:int = 0; j < properties.length; j++)
{
str = newline(str, indent);
prop = properties[j];
if (isArray)
str += “[";
else if (isDict)
str += "{";
if (isDict)
{
str += objToStr(prop, indent, refs,
namespaceURIs, exclude);
}
else
{
str += prop.toString();
}
if (isArray)
str += "] “;
else if (isDict)
str += “} = “;
else
str += ” = “;
try
{
str += objToStr(value[prop], indent, refs,
namespaceURIs, exclude);
}
catch(e:Error)
{
str += “?”;
}
}
indent -= 2;
return str;
}
}
private static function newline(str:String, n:int = 0):String
{
var result:String = str;
result += “\n”;
for (var i:int = 0; i < n; i++)
{
result += ” “;
}
return result;
}
/* General function for Conversion (thanks, Krystian Bień)
public function xmlToArrayCollection(xml:XML):ArrayCollection{
var temp:String = ‘<items>’ + xml.toString() + ‘</items>’;
xml = XML(temp);
var xmlDoc:XMLDocument = new XMLDocument(xml.toString());
var decoder:SimpleXMLDecoder = new SimpleXMLDecoder(true);
var resultObj:Object = decoder.decodeXML(xmlDoc);
var ac:ArrayCollection;
ac = new ArrayCollection();
ac.addItem(resultObj.items);
return ac;
}*/