I looked at using static variables but that was a little messy, I also looked at using Dependency Injection but spending a few hours to set up the framework and get it running is to costly when all I am doing is passing parameters on a popView, so what I came up with is the similar approach I have used when doing Native Android Apps with the Android SDK. A Singleton with getters and setters. Basically the way I have been able to do this is with the use of a Singleton sharedInstance. See code below:
package com.controls.Text
{
import flash.utils.Dictionary;
[Bindable]
public class ParameterManager
{
private static var instance:ParameterManager = new ParameterManager();
private var dictionary:Dictionary=new Dictionary();
public function ParameterManager( )
{
if (instance != null) { throw new Error('Must use ParameterManager.getInstance().') }
}
public static function getInstance(): ParameterManager {
return instance;
}
public function setParameter(key:*, value:*):void
{
dictionary[key]=value;
}
public function getParameter(key:*):*
{
return dictionary[key];
}
}
}
The method setting the value of the parameter:
protected function myList_changeHandler(event:IndexChangeEvent):void
{
var listViewReturnObject:String = new String();
listViewReturnObject = list.selectedItem.DMV_VALUE_1;
ParameterManager.getInstance().setParameter("selectedItem", listViewReturnObject);
navigator.popView();
}
The method getting the value:
protected function control_creationCompleteHandler(event:FlexEvent):void
{
var listViewReturnObject:Object = new Object();
listViewReturnObject= ParameterManager.getInstance().getParameter("selectedItem");
if (listViewReturnObject != null)
{
dataTxt.text= String(listViewReturnObject);
ParameterManager.getInstance().setParameter("", null); //Make sure objects are cleared when done.
}
}