一个HttpClient的可以让你您的应用程序中调用任意网址：

A HttpClient will allow you to call an arbitrary URL within your app:

DefaultHttpClient client = new DefaultHttpClient();
HttpGet request = new HttpGet("http;//91.9.91.91:?1");
HttpResponse response = client.execute(request);

不要忘了在尝试捕捉到，虽然包装

Don't forget to wrap in a try catch though.

编辑：

new Thread(){
    public void run(){
        try{
            DefaultHttpClient client = new DefaultHttpClient();
            HttpGet request = new HttpGet("http;//91.9.91.91:?1");
            HttpResponse response = client.execute(request);
        }catch(Exception e){
            // Handle the exception
            e.printStackTrace();
        }
    }
};