ConnectivityManager connMgr = (ConnectivityManager) getContext().getSystemService returning null on load

Question

I'm getting an error in ConnectivityManager when loading the app. I've used it a lot but this is the first time I've encounter it.

it says null but I don't have an idea what this error cause.

this is my code:

   final ConnectivityManager connMgr = (ConnectivityManager) getContext().getSystemService(Context.CONNECTIVITY_SERVICE);
            final android.net.NetworkInfo wifi = connMgr.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
            final android.net.NetworkInfo mobile = connMgr.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);

            if (wifi.isConnected()) {
                baseUrl = URL1;
            } else if (mobile.isConnected()) {
                baseUrl = URL2;
            }

and this is the error on Logcat

I dont see anything in that logcat screenshot that indicates connectivity manager is null — tyczj, Jul 16 '18 at 01:50
it points out on the `final ConnectivityManager connMgr = (ConnectivityManager) getContext().getSystemService(Context.CONNECTIVITY_SERVICE);` — FroyoDevourer, Jul 16 '18 at 01:52
try using `getActivity().getApplicationContext()` for Fragment — Abu Yousuf, Jul 16 '18 at 07:06
That second screen shot is not an error only a warning, your real issue is in `Conductor_Menu` on line `357` as shown in your first screen shot — tyczj, Jul 16 '18 at 12:42

score 0 · Answer 1 · answered Jul 16 '18 at 03:19

getContext() may become null when your activity is killed or app goes to background. Since this may happen in runtime, use try-catch.

try {
    final ConnectivityManager connMgr = (ConnectivityManager) getContext().getSystemService(Context.CONNECTIVITY_SERVICE);
    ...
} catch (Exception e) {
    ...
}

score 0 · Answer 2 · answered Jul 16 '18 at 12:04

Please Use this code--
and make sure that you context should not be null.

    enter code here
public static boolean checkConnectivity(Context context){
        boolean isConnected = false;
        try{
            ConnectivityManager connService = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
            NetworkInfo network = connService.getActiveNetworkInfo();
            if(network != null) {
                State state = network.getState();

                if(network.isConnected()){
                    isConnected = true;
                }
            }else{
                isConnected = false;
            }
        }catch (Exception e) {
            e.printStackTrace();
        }
        return isConnected;
    }

ConnectivityManager connMgr = (ConnectivityManager) getContext().getSystemService returning null on load

2 Answers2