通过UserAgent判断智能手机(设备,Android,IOS)

　///<summary>
    /// 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;
    }

代码解释：

1. !agent.Contains("Windows NT") && !agent.Contains("Macintosh") 排除Window 桌面系统 和 苹果桌面系统

2. "Android", "iPhone", "iPod", "iPad", "Windows Phone", "MQQBrowser" 这些是判断智能设备Agent中的关键词

3. MQQBrowser 为 QQ 手机浏览器，QQ 手机的Agent 比较特殊，所以单独判断

下面搜集的一些Agent，话说找到这么多的智能设备，好不容易啊：

Mozilla/5.0 (iPod; U; CPU iPhone OS 4_3_2 like Mac OS X; zh-cn) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8H7 Safari/6533.18.5

Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_2 like Mac OS X; zh-cn) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8H7 Safari/6533.18.5

MQQBrowser/25 (Linux; U; 2.3.3; zh-cn; HTC Desire S Build/GRI40;480*800)

Mozilla/5.0 (Linux; U; Android 2.3.3; zh-cn; HTC_DesireS_S510e Build/GRI40) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1

Mozilla/5.0 (SymbianOS/9.3; U; Series60/3.2 NokiaE75-1 /110.48.125 Profile/MIDP-2.1 Configuration/CLDC-1.1 ) AppleWebKit/413 (KHTML, like Gecko) Safari/413

Mozilla/5.0 (iPad; U; CPU OS 4_3_3 like Mac OS X; zh-cn) AppleWebKit/533.17.9 (KHTML, like Gecko) Mobile/8J2

Mozilla/5.0 (Windows NT 5.2) AppleWebKit/534.30 (KHTML, like Gecko) Chrome/12.0.742.122 Safari/534.30

Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_2) AppleWebKit/535.1 (KHTML, like Gecko) Chrome/14.0.835.202 Safari/535.1

Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_2) AppleWebKit/534.51.22 (KHTML, like Gecko) Version/5.1.1 Safari/534.51.22

Mozilla/5.0 (iPhone; CPU iPhone OS 5_0 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A5313e Safari/7534.48.3

Mozilla/5.0 (iPhone; CPU iPhone OS 5_0 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A5313e Safari/7534.48.3

Mozilla/5.0 (iPhone; CPU iPhone OS 5_0 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A5313e Safari/7534.48.3

Mozilla/5.0 (Windows NT 6.1) AppleWebKit/535.1 (KHTML, like Gecko) Chrome/14.0.835.202 Safari/535.1

Mozilla/5.0 (compatible; MSIE 9.0; Windows Phone OS 7.5; Trident/5.0; IEMobile/9.0; SAMSUNG; OMNIA7)　　　　　　----SAMSUNG MP7

Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0; XBLWP7; ZuneWP7)  　　　　　　　　----HTC MP7