Android uses Brocastreceiver to monitor network connection status

 Public classBroadcastserviceextendsservice{PrivateConnectivitymanager Connectivitymanager;//Network Connection Manager    PrivateNetworkinfo Networkinfo;//information about the current network//Click to view    PrivatePendingintent messagependingintent =NULL; //Notification Bar Messages    PrivateNotification messagenotification =NULL; PrivateNotificationmanager Messagenotificatiomanager =NULL; PrivateIntent notificationintent=NULL; @Override Publicibinder onbind (Intent Intent) {//TODO auto-generated Method Stub        return NULL; }    /*** Define a broadcastreceiver*/    PrivateBroadcastreceiver myreceiver=NewBroadcastreceiver () {@Override Public voidOnReceive (Context context, Intent Intent) {//TODO auto-generated Method StubString action=intent.getaction (); if(Action.equals (connectivitymanager.connectivity_action)) {Connectivitymanager=(Connectivitymanager) Context.getsystemservice (Context.connectivity_service); Wifimanager Wifimanager=(Wifimanager) Context.getsystemservice (Context.wifi_service); Wifimanager.setwifienabled (true); Wifimanager.startscan ();//Start ScanningList<scanresult> listresults=wifimanager.getscanresults (); //listresults.get (0). toString ();networkinfo=Connectivitymanager.getactivenetworkinfo (); if(networkinfo!=NULL&&networkinfo.isavailable ()) {LOG.D ("Networkinfo", "Current network connection:" +networkinfo.gettypename ()); }                Else{LOG.D ("Networkinfo", "Currently no network Connection");    }                            }        }    }; @Override Public voidonCreate () {//TODO auto-generated Method Stub        Super. OnCreate (); Intentfilter Filter=NewIntentfilter ();//Filter IntentFilter.addaction (connectivitymanager.connectivity_action);//Add ActionRegisterreceiver (myreceiver, filter);//Register receiverLOG.I ("tag", "OnCreate"); } @Override Public intOnstartcommand (Intent Intent,intFlagsintStartid) {        //TODO auto-generated Method StubLOG.I ("tag", "Onstartcommand"); Setnotification ("New Notice"); /*int intgettastcounter=30;        Activitymanager Mactivitymanager = (activitymanager) getsystemservice (Activity_service);        arraylist<string> arylisttask = new arraylist<string> ();        list<activitymanager.runningtaskinfo> mrunningtasks = Mactivitymanager.getrunningtasks (IntGetTastCounter);         int i = 0;                     Get work name and ID for (activitymanager.runningtaskinfo amtask:mrunningtasks) in cyclic and baseactivity way { Baseactivity.getclassname Remove Run Job name Arylisttask.add ("" + (i++) + ":" + amtask.b                    Aseactivity.getclassname () + "(id=" + amtask.id + ")");        LOG.D ("Task", Arylisttask.get (i-1)); }*/        return Super. Onstartcommand (Intent, flags, Startid); }    /*** SET notification message *@paramMessage Type*/    Private voidsetnotification (String message) {notificationintent=NewIntent ( This, Secondactivity.class); Messagependingintent= Pendingintent.getactivity ( This, 0,notificationintent,0); Messagenotificatiomanager=(Notificationmanager) Getsystemservice (Notification_service); Messagenotification=NewNotification (r.drawable.ic_launcher, message, System.currenttimemillis ()); //messagenotification.contentintent=messagependingintent;Messagenotification.setlatesteventinfo ( This, message, "DFDF", messagependingintent); //Show NotificationsMessagenotificatiomanager.notify ("DF", R.drawable.ic_launcher, messagenotification); } @Override Public voidOnDestroy () {//TODO auto-generated Method StubSystem.out.println ("Close to the hotel."); Unregisterreceiver (myreceiver);//to remove a registered receiverSystem.exit (0); Super. OnDestroy (); }    }

Android uses Brocastreceiver to monitor network connection status