如何使用Cairngorm3的导航库（Spring AS）
一、概述
二、LIB库包配置
package cn.com.enboga.scdemo.core.application{public class ContentDestination{public static const LOGIN:String = "content.login";public static const MAIN:String = "content.main";public static const MAIN_TRUE:String = "content.main.true";public static const MAIN_FALSE:String = "content.main.false";}}? 四、设置导航器，并设置导航点在导航器里面需要定义元数据[Waypoint]设置为导航器，然后设置每个导航点的automationName为上面定义的导航点名称。这样导航点时候可以根据这个名字导航到这个导航点上。<?xml version="1.0" encoding="utf-8"?><mx:ViewStack xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" width="100%" height="100%" xmlns:main="cn.com.enboga.scdemo.core.presentation.main.*" xmlns:login="cn.com.enboga.scdemo.core.presentation.login.*"><fx:Metadata>[Waypoint]</fx:Metadata><fx:Script><![CDATA[import cn.com.enboga.scdemo.core.application.ContentDestination;]]></fx:Script><s:NavigatorContent width="100%"height="100%"automationName="{ ContentDestination.LOGIN }"><login:UILoginGroup /></s:NavigatorContent><s:NavigatorContent width="100%"height="100%"automationName="{ ContentDestination.MAIN }"><main:UIMainGroup /></s:NavigatorContent></mx:ViewStack>?? 五、接下来为导航器定义一个PMnavigateTo 方法传入导航点名称，就可以导航定位到该导航点package cn.com.enboga.scdemo.core.presentation{import com.adobe.cairngorm.LogUtil;import com.adobe.cairngorm.navigation.NavigationEvent;import com.adobe.cairngorm.navigation.state.ISelectedIndex;import mx.logging.ILogger;import org.springextensions.actionscript.core.event.EventBus;[Landmark(name="content")]public class ContentPM implements ISelectedIndex{private static const LOG:ILogger = LogUtil.getLogger(ContentPM);[Bindable]/** 导航索引 */public var selectedIndex:int;[Enter(time="first")]public function firstEnter():void{LOG.info("content:FirstEnter");}[Enter(time="next")]public function enter():void{LOG.info("content:Enter");}[Exit]public function exit():void{LOG.info("content:Exit");}/** 导航到destination */public function navigateTo(destination:String):void{EventBus.dispatchEvent(NavigationEvent.createNavigateToEvent(destination));}/** 导航到destination */public function navigateAway(destination:String):void{EventBus.dispatchEvent(NavigationEvent.createNavigateAwayEvent(destination));}}}? 六、将导航器组件加入到Spring AS 配置文件<?xml version="1.0" encoding="utf-8"?><Objects xmlns:mx="http://www.adobe.com/2006/mxml" xmlns="http://www.springactionscript.org/mxml/config" xmlns:application="cn.com.enboga.scdemo.core.application.*" xmlns:presentation="cn.com.enboga.scdemo.core.presentation.*" xmlns:stage="org.springextensions.actionscript.stage.*" xmlns:config="org.springextensions.actionscript.ioc.factory.config.*" xmlns:cairngorm="http://ns.adobe.com/cairngorm" xmlns:main="cn.com.enboga.scdemo.core.presentation.main.*" xmlns:login="cn.com.enboga.scdemo.core.presentation.login.*"><!-- Presentation --><presentation:ContentPM /><!-- Application --><!-- Infrastructure --><!--Spring AS specific initializations--><stage:DefaultAutowiringStageProcessor/><config:EventHandlerMetadataProcessor/><cairngorm:NavigationAdaptor/><cairngorm:FirstEnterProcessor/><cairngorm:EveryEnterProcessor/><cairngorm:NextEnterProcessor/><cairngorm:ExitProcessor/><cairngorm:LandmarkProcessor/><cairngorm:WaypointProcessor/><cairngorm:WaypointHistory id="contentHistory"><mx:String>content</mx:String></cairngorm:WaypointHistory><cairngorm:GlobalHistory id="globalHistory"/></Objects>?加载配置文件，这里是使用的是MXML的加载模式，也可以使用配置文件的加载模式。
<?xml version="1.0" encoding="utf-8"?><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" xmlns:cairngorm="com.adobe.cairngorm.*" minWidth="955" minHeight="600" creationComplete="creationCompleteHandler()" xmlns:presentation="cn.com.enboga.scdemo.core.presentation.*"><fx:Script><![CDATA[import cn.com.enboga.scdemo.ContentContext;import cn.com.enboga.scdemo.core.presentation.UIContentViewStack;import mx.controls.Alert;import mx.events.FlexEvent;import mx.logging.LogEventLevel;import org.springextensions.actionscript.context.support.FlexXMLApplicationContext;import org.springextensions.actionscript.context.support.MXMLApplicationContext;/** Spring 上下文 */private var _appContext:FlexXMLApplicationContext = new FlexXMLApplicationContext();private var appContext:MXMLApplicationContext;/** 初始化 */protected function creationCompleteHandler():void{//_appContext = new FlexXMLApplicationContext();//_appContext.addConfigLocation("config/application-context.xml");//_appContext.addEventListener(Event.COMPLETE, applicationContext_completeHandler);//_appContext.addEventListener(IOErrorEvent.IO_ERROR, applicationContext_ioErrorHandler);//_appContext.load();appContext = new MXMLApplicationContext(ContentContext);appContext.load();}/** Spring 配置文件初始化完成后执行 */private function applicationContext_completeHandler(event:Event):void {this.addElement(new UIContentViewStack());}/** Spring 配置文件初始化错误 */private function applicationContext_ioErrorHandler(event:IOErrorEvent):void {Alert.show("读取StringAS配置文件出错！", "错误");}]]></fx:Script><fx:Declarations><!-- 定义日志 --><mx:TraceTarget level="{ LogEventLevel.ALL }"includeCategory="true"><mx:filters><fx:Array><fx:String>com.adobe.cairngorm.*</fx:String><fx:String>cn.com.enboga.scdemo.*</fx:String></fx:Array></mx:filters></mx:TraceTarget></fx:Declarations><presentation:UIContentViewStack /></s:Application>七、在导航点里面导航到其他导航点
UILoginGroup.mxml<?xml version="1.0" encoding="utf-8"?><s:VGroup xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" width="400" height="300"><fx:Script><![CDATA[import cn.com.enboga.scdemo.core.application.ContentDestination;import cn.com.enboga.scdemo.core.presentation.ContentPM;[Bindable][Autowired]public var contentPM:ContentPM;]]></fx:Script><s:Button label="首页" click="contentPM.navigateTo(ContentDestination.MAIN)" /><s:Button label="true" click="contentPM.navigateTo(ContentDestination.MAIN_TRUE)" /><s:Button label="false" click="contentPM.navigateTo(ContentDestination.MAIN_FALSE)" /></s:VGroup>
?
UIMainGroup.mxml<?xml version="1.0" encoding="utf-8"?><s:VGroup xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" width="400" height="300" xmlns:main="cn.com.enboga.scdemo.core.presentation.main.*"><fx:Script><![CDATA[import cn.com.enboga.scdemo.core.application.ContentDestination;import cn.com.enboga.scdemo.core.presentation.ContentPM;[Bindable][Autowired]public var contentPM:ContentPM;]]></fx:Script><s:Button label="返回登录" click="contentPM.navigateTo(ContentDestination.LOGIN)" /><s:Button label="true" click="contentPM.navigateTo(ContentDestination.MAIN_TRUE)" /><s:Button label="false" click="contentPM.navigateTo(ContentDestination.MAIN_FALSE)" /><main:UIMainViewStack /></s:VGroup>?UIMainViewStack.mxml
<?xml version="1.0" encoding="utf-8"?><mx:ViewStack xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" width="400" height="300"><fx:Metadata>[Waypoint]</fx:Metadata><fx:Script><![CDATA[import cn.com.enboga.scdemo.core.application.ContentDestination;]]></fx:Script><s:NavigatorContent width="100%"height="100%"automationName="{ ContentDestination.MAIN_TRUE }"><s:Label text="MAIN_TRUE" /></s:NavigatorContent><s:NavigatorContent width="100%"height="100%"automationName="{ ContentDestination.MAIN_FALSE }"><s:Label text="MAIN_FALSE" /></s:NavigatorContent></mx:ViewStack>?