ADC/devnet/flex/TransitionsSamples/ViewTransitionsSample/src/views/FadeView.mxml

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<s:View xmlns:fx="http://ns.adobe.com/mxml/2009"
		xmlns:s="library://ns.adobe.com/flex/spark"
		title="Sample Fade">
	
	<fx:Script>
		<![CDATA[
			import mx.events.FlexEvent;
			
			import spark.effects.easing.Bounce;
			import spark.effects.easing.Elastic;
			import spark.events.ViewNavigatorEvent;
			import spark.transitions.CrossFadeViewTransition;
			import spark.transitions.FlipViewTransition;
			import spark.transitions.SlideViewTransition;
			import spark.transitions.ViewTransitionDirection;
			
			public var fadeTrans:CrossFadeViewTransition = new CrossFadeViewTransition();
			
			protected function onFade():void 
			{
				if (txtDuration.text!=null && txtDuration.text.length>0)
					fadeTrans.duration = parseInt(txtDuration.text)*1000;
				if (rgEasing.selectedValue=="Bounce")
					fadeTrans.easer = new Bounce();
				else if (rgEasing.selectedValue=="Elastic")
					fadeTrans.easer = new Elastic();
				navigator.pushView(views.SampleView,views.FadeView,null,fadeTrans);
			}
			
			protected function add_clickHandler(event:MouseEvent):void
			{
				var n:int = parseInt(txtDuration.text);
				txtDuration.text = new String(n+1);
			}
			
			protected function subtract_clickHandler(event:MouseEvent):void
			{
				var n:int = parseInt(txtDuration.text);
				txtDuration.text = new String(n-1);
			}
		]]>
	</fx:Script>
	
	<fx:Declarations>
		<s:RadioButtonGroup id="rgEasing"/>
	</fx:Declarations>
	
	<s:VGroup width="100%" height="100%" horizontalAlign="center" verticalAlign="middle" gap="30">
		
		<s:HGroup verticalAlign="middle" top="50">
			<s:Label text="Duration (seconds)" color="0x294867"/>
			<s:HGroup>
				<s:Button id="addBtn" label="+" click="add_clickHandler(event)"/>
				<s:TextInput id="txtDuration" width="{addBtn.width}" height="{addBtn.height}" restrict="0-9" text="1"
							 textAlign="center"/>
				<s:Button id="subtractBtn" label="-" click="subtract_clickHandler(event)"/>
			</s:HGroup>  
		</s:HGroup>
		<s:Line width="90%">
			<s:stroke>
				<s:SolidColorStroke color="0x336699" weight="4"/>
			</s:stroke>
		</s:Line>
		<s:Label text="Easing function" color="0x294867"/>
		<s:VGroup verticalAlign="middle" paddingLeft="45">
			<s:HGroup>
				<s:RadioButton id="bounceOpt" label="Bounce" groupName="rgEasing"/>
				<s:RadioButton id="elasticOpt" label="Elastic" groupName="rgEasing"/>
			</s:HGroup>
		</s:VGroup>	
		<s:HGroup horizontalAlign="center">
			<s:Button width="269" label="Start" height="110" click="onFade()" color="0xFFFFFF"/>
		</s:HGroup>		
	</s:VGroup>  
</s:View>