@验证在BlackBerry电子邮件 [英] @ validation for email in BlackBerry

问题描述

我发展，用户需要输入一个有效的电子邮件的形式。他/她将使用它作为一个登录ID玩game.I想知道我怎么可以验证包含@用户名，类似于string.contains功能。我了解到，我们可以使用string.indexOf（），但它是不支持@。请建议我怎么开展这项验证。当电子邮件EditField中失去焦点，用户名必须进行检查，看它是否包含@与否。

I am developing a form where the user needs to enter a valid email. He/she will use it as a loginid to play the game.I want to know how can I validate the username containing @, similar to string.contains function. I learnt we can use string.indexOf() but it is not supporting "@". Kindly suggest how do I carry out this validation. When the email editfield loses focus, the username must be checked to see if it contains "@" or not.

推荐答案

使用EmailAddressEditField ..这里是这样的。

Use EmailAddressEditField.. here is the way

EmailAddressEditField email=new EmailAddressEditField("Email Address: ", "");
        String address =email.getText();
            int at = address.indexOf("@");
            int len = address.length();
            String host = address.substring(at + 1, len);
            int dot = host.lastIndexOf('.');
            len = host.length();

            if (at <= 0 || at > len - 6  && dot < 0 || dot >= len - 3)
                Dialog.alert("Invalid email");
            else
            {
                 if (host.indexOf("..") >= 0)
                 {
                     Dialog.alert("Invalid email");
                 }
                 else
                 {
                     //correct mail id.. continue your process

                 }
            }

这篇关于@验证在BlackBerry电子邮件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！