如何以编程方式从 flex 组件中删除验证 [英] How to remove validation programmatically from flex component

问题描述

如何以编程方式从 flex 组件中删除验证这是我的方法

How to remove validation programmatically from flex component This is my method

public static function validateRequired(txt:TextInput, errorMessage:String="This field is required"):Boolean
        {
                var v:Validator = new Validator();

                v.listener = txt;
                var result:ValidationResultEvent = v.validate(txt.text);
                var returnResult:Boolean = (result.type == ValidationResultEvent.VALID);
                //Alert.show("validation result is " + returnResult);
                if (!returnResult) {
                    v.requiredFieldError = errorMessage;
                }
                return returnResult;
        }

但是，每次我创建新的验证器时，弹出窗口都会包含多条消息，例如

But, as each time i am creating new validator, so pop-up contains multiple messages like

此字段为必填项.
此字段为必填字段.

如何删除组件附带的错误信息?

How to remove error messages attached with component?

推荐答案

Validator.enabled 属性允许您启用和禁用验证器.当 enabled 属性的值为 true 时，验证器被启用；当值为 false 时，验证器被禁用.当验证器被禁用时，它不会调度任何事件，并且 validate() 方法返回 null.

The Validator.enabled property lets you enable and disable a validator. When the value of the enabled property is true, the validator is enabled; when the value is false, the validator is disabled. When a validator is disabled, it dispatches no events, and the validate() method returns null.

例如，您可以使用数据绑定来设置 enabled 属性，如下代码所示:

For example, you can set the enabled property by using data binding, as the following code shows:

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

    <mx:ZipCodeValidator id="zcVal" 
        source="{inputA}" 
        property="text" 
        required="true" 
        enabled="{enableV.selected}"/>

    <mx:TextInput id="inputA"/> 
    <mx:TextInput/> 
    <mx:CheckBox id="enableV" 
        label="Validate input?"/>
</mx:Application>

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