数据绑定
a) 使用<mx:Binding>
单向绑定：<mx:Binding source="bindFrom.text" destination="bindTo.text"/>
双向绑定：<mx:Binding source="bindFrom.text" destination="bindTo.text"/> <mx:Binding source="bindTo.text" destination="bindFrom.text"/>
示例：
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
backgroundColor="#FFFFFF">
<mx:Binding source="bindFrom.text" destination="bindTo.text" />
<mx:Binding source="bindTo.text" destination="bindFrom.text" />
<mx:Panel title="Simple Binding Example" width="300" height="150">
<mx:Form>
<mx:FormItem label="Bind From">
<mx:TextInput id="bindFrom" />
</mx:FormItem>
<mx:FormItem label="Bind To">
<mx:TextInput id="bindTo" />
</mx:FormItem>
</mx:Form>
</mx:Panel>
</mx:Application>
b)使用[Bindable]绑定变量到组件
如果类声明为[Bindable]，那么该类中所有的公共属性都是可绑定的
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
backgroundColor="#FFFFFF">
<mx:Script>
<![CDATA[
[Bindable]
public var myLabelName:String = "Hello World";
]]>
</mx:Script>
<mx:Panel title="Binding With Curly Braces" width="350" height="150">
<mx:Spacer height="100%"/>
<mx:Label
text="{this.myLabelName}" />
<mx:Spacer height="100%"/>
</mx:Panel>
<mx:TextArea id="ta1" text="" change="this.myLabelName=ta1.text" />
</mx:Application>
直接绑定组件：
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
backgroundColor="#FFFFFF">
<mx:Panel title="Empty Panel" width="{mySlider.value}" height="150" />
<mx:TextArea width="300" text="The width property of the Panel above is bound to the value property of the HSlider below." />
<mx:HSlider id="mySlider" snapInterval="5" minimum="100" maximum="350" value="250"/>
</mx:Application>
posted on 2011-03-16 13:13
长春语林科技 阅读(187)
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