Android determines network connection status, networking type, operator

/*** Get access to the Internet * *@paramMcontext *@return     */     Public Staticstring Getnettype (Context mcontext) {String NetType= ""; Connectivitymanager ConnectionManager=(Connectivitymanager) mcontext. Getsystemservice (Context.connectivity_service); Networkinfo Info=Connectionmanager.getactivenetworkinfo (); if(NULL! = Info &&info.isavailable ()) {NetType=Info.gettypename (); }        returnNetType; }    /*** Determine if the network connection is available * *@paramMcontext *@return      */     Public Static BooleanGetnetisvali (Context mcontext) {if(Mcontext! =NULL) {Connectivitymanager Mconnectivitymanager=(Connectivitymanager) mcontext. Getsystemservice (Context.connectivity_service); Networkinfo Mnetworkinfo=Mconnectivitymanager. Getactivenetworkinfo (); if(Mnetworkinfo! =NULL) {                returnmnetworkinfo.isavailable (); }        }        return false; }    /*** Get carrier information * *@paramMcontext *@return     */     Public Staticstring Getnetextrainfo (Context mcontext) {String netextrainfo= ""; Telephonymanager mTm=(Telephonymanager) mcontext. Getsystemservice (Context.telephony_service); if(mtm.getsimstate () = =Telephonymanager.sim_state_ready) {Netextrainfo=Mtm.getsimoperator (); if(NULL!=netextrainfo) {                if(Netextrainfo.equals ("46000")                        || Netextrainfo.equals ("46002")                        || Netextrainfo.equals ("46007")) {                    //China MobileNetextrainfo = "China Mobile"; } Else if(Netextrainfo.equals ("46001")) {                    //China UnicomNetextrainfo = "China Unicom"; } Else if(Netextrainfo.equals ("46003")) {                    //China TelecomNetextrainfo = "China Telecom"; } Else{netextrainfo= "Other"; }            }        }        returnNetextrainfo; }

1. Consider only 1 cards

2. Don't forget to add network permissions

Android determines network connection status, networking type, operator