Android UnknownHostException:有没有办法设置超时？

Question

当我连接到我的网络服务以检索数据时,手机有时会断开连接,DNS混乱,等等.然后我得到一个UnknownHostException非常好的.

我想要做的是在这里寻找hostName时设置超时:

 response = httpclient.execute(httpget);

我已经设定:

HttpConnectionParams.setConnectionTimeout(httpParameters,timeoutConnection);
HttpConnectionParams.setSoTimeout(httpParameters, timeoutSocket);

但他们似乎并不申请HostLookUp.有没有办法在主机查找时设置超时？

编辑
我刚刚发现用户无法修改nslookup hc-dev邮件列表中此帖子的超时.

我将不得不在此时从计时器手动抛出超时异常.

Answer 1

你应该使用这样的东西：

/**
 * Check availability of web service
 * 
 * @param host Address of host
 * @param seconds Timeout in seconds
 * @return Availability of host
 */
public static boolean checkIfURLExists(String host, int seconds)
{
    HttpURLConnection httpUrlConn;
    try
    {
        httpUrlConn = (HttpURLConnection) new URL(host).openConnection();

        // Set timeouts in milliseconds
        httpUrlConn.setConnectTimeout(seconds * 1000);
        httpUrlConn.setReadTimeout(seconds * 1000);

        // Print HTTP status code/message for your information.
        System.out.println("Response Code: " + httpUrlConn.getResponseCode());
        System.out.println("Response Message: "
                + httpUrlConn.getResponseMessage());

        return (httpUrlConn.getResponseCode() == HttpURLConnection.HTTP_OK);
    }
    catch (Exception e)
    {
        System.out.println("Error: " + e.getMessage());
        return false;
    }
}