maven-flex-plugin/examples/i18n/runtime-locales/swf/src/main/flex/Main.mxml

<?xml version="1.0" encoding="utf-8"?>
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<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
               xmlns:s="library://ns.adobe.com/flex/spark"
               creationComplete="onCreationComplete(event)">

    <fx:Metadata>
        [ResourceBundle("myresources")]
    </fx:Metadata>

    <fx:Script>
      <![CDATA[
        import mx.collections.ArrayCollection;
        import mx.events.FlexEvent;
        import mx.events.ResourceEvent;
        import mx.modules.ModuleBase;

        import spark.events.IndexChangeEvent;

        // Actually I don't quite know why I need to do this ...
        // without it, I get an error, that this class is missing.
        private var tst:ModuleBase = null;

        [Bindable]
        private var locales:ArrayCollection = new ArrayCollection([{label: "English", locale: "en_US"},
            {label: "German", locale: "de_DE"}]);

        private function onCreationComplete(event:FlexEvent):void {
            if("en" == Capabilities.language) {
                localeSelector.selectedItem = locales.getItemAt(0);
            } else if("de" == Capabilities.language) {
                localeSelector.selectedItem = locales.getItemAt(1);
            }
            onLanguageChange();
        }

        private function onLanguageChange(event:IndexChangeEvent = null):void {
            var selectedLocale:String = String(localeSelector.selectedItem.locale);

            // Ensure that you are not loading the same resource module more than once.
            if (resourceManager.getLocales().indexOf(selectedLocale) != -1) {
                completeHandler(null);
            } else {
                var resourceModuleURL:String =
                        "./locales/runtime-locales-swf-1.0.0-SNAPSHOT-" + selectedLocale + ".swf";
                var eventDispatcher:IEventDispatcher = resourceManager.loadResourceModule(resourceModuleURL);
                eventDispatcher.addEventListener(ResourceEvent.COMPLETE, completeHandler);
            }
        }

        private function completeHandler(event:ResourceEvent):void {
            resourceManager.localeChain = [localeSelector.selectedItem.locale];
        }

        ]]>
   </fx:Script>

    <s:VGroup>
        <s:ComboBox id="localeSelector" dataProvider="{locales}" change="onLanguageChange(event)"/>
        <s:Label text="{resourceManager.getString('myresources','greeting')}"/>
    </s:VGroup>

</s:Application>