Android网络检查不在某些设备上工作

Question

你好，我是新的android，我实现了一个方法来检查互联网连接。它在一些设备工作正常，不工作在三星galaxy选项卡4.我搜索了很多，我找到一个解决方案。我的设备可以连接其他应用程序的互联网。它在所有其他设备上运行良好。请帮我在此先感谢

public boolean isConnected() { 
     try { 

      ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE); 
      if (cm.getActiveNetworkInfo() != null 
        && cm.getActiveNetworkInfo().isConnectedOrConnecting()) { 
       // Network is available but check if we can get access from the 
       // network. 
       URL url = new URL("http://www.google.co.in"); 
       HttpURLConnection urlc = (HttpURLConnection) url 
         .openConnection(); 
       urlc.setRequestProperty("Connection", "close"); 
       urlc.setConnectTimeout(2000); // Timeout 2 seconds. 
       urlc.connect(); 

       if (urlc.getResponseCode() == 200) // Successful response. 
       { 
        Log.d("response", "" + urlc.getResponseCode()); 
        return true; 
       } else { 

        return false; 
       } 
      } 
     } catch (Exception e) { 
      e.printStackTrace(); 
     } 
     return false; 
    } 

Answer 1

尝试：

ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE); 
    NetworkInfo activeNetwork = cm.getActiveNetworkInfo(); 
    boolean isConnected = activeNetwork != null && activeNetwork.isConnected();