Question

I have a mxml application which is loaded into another movie. this requires it to implement certain functions.
is it possible to have the main class of an mxml app to implement an interface?
if yes, how?

Answer 1

Every mxml component (and Application too) has implements property where you can add your interfaces. Here’s example:

App.mxml:

<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"
               minWidth="955" minHeight="600"
               implements="IInterface">
    <s:layout>
        <s:VerticalLayout />
    </s:layout>
    <fx:Script>
        <![CDATA[

            public function one():void
            {
                // TODO Auto Generated method stub

            }

            public function get prop():String
            {
                // TODO Auto Generated method stub
                return null;
            }

            public function set prop(value:String)
            {
                // TODO Auto Generated method stub
                return null;
            }

        ]]>
    </fx:Script>


</s:Application>

IInterface.as:

package
{
    public interface IInterface
    {
        function one():void;

        function get prop():String;
        function set prop(value:String);
    }
}