Determine if a network connection is available in Android

First, determine whether the network connection is available

1  Public Static Booleanisnetworkavailable (Context context) {2Connectivitymanager cm =(connectivitymanager) Context3 . Getsystemservice (Context.connectivity_service); 4         if(cm = =NULL) {   5}Else {6  　　　　　　　 //if it is only used to determine the network connection7  　　　　　　   //You can use Cm.getactivenetworkinfo (). isavailable (); 8Networkinfo[] Info =Cm.getallnetworkinfo (); 9             if(Info! =NULL) {   Ten                  for(inti = 0; i < info.length; i++) {    One                     if(info[i].getstate () = =NetworkInfo.State.CONNECTED) { A                         return true;  -                     }    -                 }    the             }    -         }    -         return false;  -}

Second, judge whether the GPS is open

1  Public Static Booleanisgpsenabled (Context context) {2Locationmanager LM =((locationmanager) Context3 . Getsystemservice (Context.location_service)); 4list<string> accessibleproviders = Lm.getproviders (true); 5         returnAccessibleproviders! =NULL&& accessibleproviders.size () > 0; 6}

Third, determine if WiFi is turned on

1  Public Static Booleaniswifienabled (Context context) {2Connectivitymanager Mgrconn =(connectivitymanager) Context3 . Getsystemservice (Context.connectivity_service); 4Telephonymanager Mgrtel =(telephonymanager) Context5 . Getsystemservice (Context.telephony_service); 6         return(Mgrconn.getactivenetworkinfo ()! =NULL&&Mgrconn7. Getactivenetworkinfo (). GetState () = = NetworkInfo.State.CONNECTED) | |Mgrtel8. Getnetworktype () = =Telephonymanager.network_type_umts); 9}

Iv. Judging whether it is a 3G network

1  Public Static Booleanis3rd (Context context) {2Connectivitymanager cm =(connectivitymanager) Context3 . Getsystemservice (Context.connectivity_service); 4Networkinfo Networkinfo =Cm.getactivenetworkinfo (); 5         if(Networkinfo! =NULL   6&& Networkinfo.gettype () = =connectivitymanager.type_mobile) {   7             return true; 8         }   9         return false; Ten}

Five, the judge is WiFi or 3g network, the embodiment of the user here, WiFi can be suggested to download or online playback.

1  Public Static BooleanIswifi (Context context) {2Connectivitymanager cm =(connectivitymanager) Context3 . Getsystemservice (Context.connectivity_service); 4Networkinfo Networkinfo =Cm.getactivenetworkinfo (); 5             if(Networkinfo! =NULL   6&& Networkinfo.gettype () = =Connectivitymanager.type_wifi) {   7                 return true; 8             }   9             return false; Ten}

Determine if a network connection is available in Android