Question

我似乎面临网络检查不可靠的问题。我的意思是，当实际网络不可用时，它有时会返回true。

这种情况发生在现实世界的场景中，当你进入地下并且信号松动时，手机正确报告它没有显示任何条形但检查仍然会返回true。

我正在使用以下代码：

    ConnectivityManager connectivityManager = (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);    
    NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo(); 
    boolean isNetworkAvailalbe = (activeNetworkInfo != null);

我正在寻找实施可靠网络检查的最防弹方式，任何建议？

Answer 1

试试这个..

public static boolean checkNetworkRechability(Context mContext) {
        ConnectivityManager connectivityManager = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();
        isInternetAvailable();
        return activeNetworkInfo != null && activeNetworkInfo.isConnected();
    }

    public static boolean isInternetAvailable() {
        Log.i("TAG", "isInternetAvailable start");
        try {
            InetAddress ipAddr = InetAddress.getByName(new URL("google.com").getHost());


            String ip = ipAddr.getHostAddress();
            if (ip.equals("")) {
                return false;
            } else {
                Log.i("TAG", "IP Address : " + ip);
                return true;
            }

        } catch (Exception e) {
            return false;
        }

    }

Answer 2

ConnectivityManager cm =
    (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);

NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
boolean isConnected = activeNetwork != null &&
                      activeNetwork.isConnectedOrConnecting();

在Android Developer门户网站上，您可以找到更多信息：http://developer.android.com/training/monitoring-device-state/connectivity-monitoring.html

Android网络检查不可靠

2 个答案: