我通过ping谷歌检查互联网连接状态。问题是,当没有连接且等待时间过长时。
这是我的代码:
private boolean checkInternet() {
String netAddress = null;
try
{
netAddress = new NetTask().execute("www.google.com").get();
return (!netAddress.equals(""));
}
catch (Exception e1)
{
e1.printStackTrace();
return false;
}
return false;
}
public class NetTask extends AsyncTask<String, Integer, String>
{
@Override
protected String doInBackground(String... params)
{
InetAddress addr = null;
try
{
addr = InetAddress.getByName(params[0]);
}
catch (UnknownHostException e)
{
e.printStackTrace();
return "";
} catch (IOException time)
{
time.printStackTrace();
return "";
}
return addr.getHostAddress();
}
}
我无法连接isReachable(int timeout)
因为它返回boolean
。我该如何解决?
答案 0 :(得分:0)
如果方法在规定的时间内没有完成,有几种方法可以取消该方法。
第一个答案to this question可能是我要去的方式。这里插入了你的例子。
ExecutorService executor = Executors.newCachedThreadPool();
Callable<Object> task = new Callable<Object>() {
public Object call() {
String netAddress = new NetTask().execute("www.google.com").get();
return (!netAddress.equals(""));
}
};
Future<Object> future = executor.submit(task);
try{
//Give the task 5 seconds to complete
//if not it raises a timeout exception
Object result = future.get(5, TimeUnit.SECONDS);
//finished in time
return result;
}catch (TimeoutException ex){
//Didn't finish in time
return false;
}