如何检查IP地址是否可达
在我的应用程序中,我使用下面的代码检查了是否存在互联网连接
private boolean isNetworkAvailable() {
ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();
return activeNetworkInfo != null; }
现在的问题是,我如何检查与一台远程计算机IP的连接是否存在...我需要连接到外部IP Web服务... ..需要检查连接。假设链接如下所示
In my application I have checked whether ineternet connection is there using the below code
private boolean isNetworkAvailable() {
ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();
return activeNetworkInfo != null; }
Now the problem is that how can i check whether conncetion to one remote computer Ip is exist or not...I need to connect to an external IP webservice.....Need to check connetion to that .Suppose the link is like as given below
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请参阅 InetAddress 的文档
see documentation of InetAddress