java - 'A resource was acquired at attached stack trace but never released ' error when a receiver is starting an IntentService -

i have broadcastreceiver calls intentservice. getting following error when receiver code finished running.

error  'a resource acquired @ attached stack trace never released. see java.io.closeable information on avoiding resource leaks.     java.lang.throwable: explicit termination method 'release' not called' 

here code:

public class restartreceiver extends broadcastreceiver {      private static final string tag = "restartreceiver";      @override     public void onreceive(context context, intent intent) {         android.os.debug.waitfordebugger();         connectivitymanager connmgr = (connectivitymanager) context.getsystemservice(context.connectivity_service);         final networkinfo wifi = connmgr.getnetworkinfo(connectivitymanager.type_wifi);         final networkinfo mobile = connmgr.getnetworkinfo(connectivitymanager.type_mobile);         if (wifi.isconnected() || mobile.isconnected()) {             intent downloadintent=new intent(context,downloadservice.class);             context.startservice(downloadintent);         }         else {             toast.maketext(context, "no network connectivity", toast.length_short).show();         }     } }