<?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" minWidth="955" minHeight="600">

   <fx:Script>

       <![CDATA[

           import mx.controls.Alert;

           import mx.events.ValidationResultEvent;

           import mx.validators.EmailValidator;

           import mx.validators.StringValidator;

           import mx.validators.ValidationResult;

           public var emailVal:EmailValidator = new EmailValidator();

           public var stringVal:StringValidator = new StringValidator();

           public function validateForm():void

           {

            var valResult:ValidationResultEvent;

            stringVal.source=username;

            stringVal.property = "text";

            stringVal.minLength=6;

            emailVal.source = email;

            emailVal.property = "text";

            valResult = emailVal.validate();

            if(valResult.type == "invalid" )

            {

              Alert.show("Please fix your Email address.");

            }

            else

            {

                valResult = stringVal.validate();

                if(valResult.type == "invalid")

                {

                  Alert.show("Please fix your Username.");

                }

            }

           }

       ]]>

   </fx:Script>

    <s:VGroup horizontalCenter="0" verticalCenter="0">

        <s:Label text="Email:"/>

        <s:TextInput id="email"/>

        <s:Label text="Enter your username:"/>

        <s:TextInput id="username"/>

        <s:Button label="提交" id="submitButton" click="validateForm()"/>

    </s:VGroup>

</s:Application>