Connectivitymanager To Verify Internet Connection

Hi all I need to verify if my device is currently connected to internet or not and so I wrote this class that uses a ConnectivityManager to check: public boolean checkInternetConne

Solution 1:

package com.app.utility;

  publicclassUtilities {

    publicstaticfinalbooleanCheckInternetConnection(Context context) {
      ConnectivityManagercm= (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);

      if (cm.getActiveNetworkInfo() != null && cm.getActiveNetworkInfo().isAvailable() && cm.getActiveNetworkInfo().isConnected()) {
        returntrue;

      } else {
        returnfalse;
      }
    }
  }

Solution 2:

The only issue with using getActiveNetworkInfo() is that there are a number of situations where is will not correctly detect connectivity. For example if the mobile network is disabled on a phone but wifi is available then the active network may still be counted as the mobile network and therefore return false.

An alternative is:

publicbooleanisOnline() {
    ConnectivityManagercm= (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfonetInfoMob= cm.getNetworkInfo(cm.TYPE_MOBILE);
    NetworkInfonetInfoWifi= cm.getNetworkInfo(cm.TYPE_WIFI);
    if ((netInfoMob != null || netInfoWifi != null) && (netInfoMob.isConnectedOrConnecting() || netInfoWifi.isConnectedOrConnecting())) {
        returntrue;
    }
    returnfalse;
}

Solution 3:

Thx Alan H!

The if condition may cause NPE when one of netInfoMob and netInfoWifi is null but the other not.

This one works for me:

netInfoMobile!=null&&netInfoMobile.isConnectedOrConnecting()||netInfoWifi!=null&&netInfoWifi.isConnectedOrConnecting()

Solution 4:

Try this , this code works.

publicstaticbooleancheckNetwork(Context context) {
   context = context;
    ConnectivityManagerconnManager= (ConnectivityManager) context
            .getSystemService(Context.CONNECTIVITY_SERVICE);
    if ((connManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE) != null && connManager
            .getNetworkInfo(ConnectivityManager.TYPE_MOBILE).isConnected())
            || (connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI) != null && connManager
            .getNetworkInfo(ConnectivityManager.TYPE_WIFI)
            .isConnected())) {
        returntrue;
    } else {
        returnfalse;
    }
}

Solution 5:

You can easily check with kotlin.

funcheckInternetConnection(context Context) {
     connectivityManager : ConnectivityManager = context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager?

     if(connectivityManager.activeNetwork) {
         returntrue
     } else {
         returnfalse
     }
 }