通过UserAgent判断智能手机(设备,Android,IOS)

转：http://free0007.iteye.com/blog/2017329
/// 根据 Agent 判断是否是智能手机
///</summary>
///<returns></returns>
public static bool CheckAgent()
{
    bool flag = false;

    string agent = HttpContext.Current.Request.UserAgent;
    string[] keywords = { "Android", "iPhone", "iPod", "iPad", "Windows Phone", "MQQBrowser" };

       //排除 Windows 桌面系统
        if (!agent.Contains("Windows NT") || (agent.Contains("Windows NT") && agent.Contains("compatible; MSIE 9.0;")))
        {
            //排除 苹果桌面系统
            if (!agent.Contains("Windows NT") && !agent.Contains("Macintosh"))
            {
                foreach (string item in keywords)
                {
                    if (agent.Contains(item))
                    {
                        flag = true;
                        break;
                    }
                }
            }
        }

    return flag;
}

function getPlatform()
{//设置平台信息
    var platform = -1;
    var agent = navigator.userAgent.toLowerCase();
    if((/android/gi).test(agent))
    {
        platform = 1;
    }
    else if((/iphone/gi).test(agent))
    {
        platform = 2;
    }
    else
    {
        platform = 1;
    }
    return platform;
}