Android gets and determines network connection status

/* Add permissions */
<uses-permission android:name= "Android.permission.ACCESS_NETWORK_STATE" ></uses-permission>
/* Add and invoke the following methods where the network needs to be judged */

 Public Booleanisnetworkavilable (Context context) {Connectivitymanager Connectivitymanager=(Connectivitymanager) Context.getsystemservice (Context.connectivity_service); if(Connectivitymanager = =NULL){            return false; }Else{networkinfo Networkinfo=Connectivitymanager.getactivenetworkinfo (); if(Networkinfo! =NULL ){                                /*determine if the network is connected*/                if(networkinfo.getstate () = =NetworkInfo.State.CONNECTED) {/*determine if the WiFi connection is*/                    if(Networkinfo.gettype () = =Connectivitymanager.type_wifi) {Toast.maketext (Getapplicationcontext (),"WiFi", Toast.length_short). Show (); }                    /*determine if the data connection is*/                    Else if(Networkinfo.gettype () = =connectivitymanager.type_mobile) {Toast.maketext (Getapplicationcontext (),"GPRS", Toast.length_short). Show (); }                    return true; }            }        }        return false; }

If data is connected through Telephonymanager to obtain data is 3g/4g, unicom or mobile telecommunications and other information

/* Get service information from your phone's suppliers * *
Telephonymanager Telephonymanager = (telephonymanager) context.getsystemservice (Context.telephony_service);

Get phone format: int getphonetype ()
int PHONE_TYPE_CDMA mobile phone format for CDMA, telecom
int PHONE_TYPE_GSM mobile phone format for GSM, Mobile and Unicom
int phone_type_none cell phone format unknown

Android gets and determines network connection status