———使用数据模型存储数据

You can use a data model to store application-specific data. A data model is an ActionScript object that provides properties for storing data, and optionally contains methods for additional functionality. Data models provide a way to store data in the Flex application before it is sent to the server, or to store data sent from the server before using it in the application.

You can declare a simple data model that does not require methods in an <mx:Model>, <mx:XML>, or <mx:XMLList> tag. The following example shows an application that contains TextInput controls for entering personal contact information and a data model, represented by the <mx:Model> tag, for storing the contact information:

     你可以使用数据模型来存储具体的程序数据，一个数据模型就是一个ActionScript对象，它提供了一些属性来存储数据，并选择性地包含了一些附加功能的方法。数据模型提供了一条在Flex程序向服务器发送数据前存储数据的途径。
     你可以在<mx:Model>，<mx:XML>，或<mx:XMLList>标记中声明一个简单的，并不包含方法的数据模型。以下的示例展示了一个包含TextInput控件和一个数据模型的应用，此程序使用TextInput控件来获得用户的个人信息，将他们用<mx:Model>标记来表现出来，以此来记录联系信息：

<?xml version="1.0"?>
<!-- mxml/StoringData.mxml -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">

    <!-- A data model called "contact" stores contact information.
        The text property of each TextInput control shown above
        is passed to a field of the data model. -->
    <mx:Model id="contact">
        <info>
            <homePhone>{homePhoneInput.text}</homePhone>
            <cellPhone>{cellPhoneInput.text}</cellPhone>
            <email>{emailInput.text}</email>
        </info>
    </mx:Model>

    <mx:Panel title="My Application" paddingTop="10" paddingBottom="10"
        paddingLeft="10" paddingRight="10" >
        <!-- The user enters contact information in TextInput controls. -->
        <mx:TextInput id="homePhoneInput"
            text="This isn't a valid phone number."/>
        <mx:TextInput id="cellPhoneInput" text="(999)999-999"/>
        <mx:TextInput id="emailInput" text="[e-mail]"/>
    </mx:Panel>

</mx:Application>