如何在Flex的視圖堆棧中放置formitem？

Question

如何將表單項放在flex的視圖堆棧中？這樣我就可以通過一個comboBox獲取選定的表單項

Answer 1

<mx:ComboBox id="cb">
    <mx:dataProvider>
        <mx:Array>
            <mx:String>Label-1</mx:String>
            <mx:String>Label-2</mx:String>
            <mx:String>Label-3</mx:String>
        </mx:Array>
    </mx:dataProvider>
</mx:ComboBox>

<mx:ViewStack id="vs" selectedIndex="{cb.selectedIndex}">
    <mx:FormItem label="Label-1">
        <mx:TextInput/>
    </mx:FormItem>
    <mx:FormItem label="Label-2">
        <mx:TextInput/>
    </mx:FormItem>
    <mx:FormItem label="Label-3">
        <mx:TextInput/>
    </mx:FormItem>
</mx:ViewStack>