Network:android Network Judgment (WiFi, 3G and others)

Package Mark.zeng;      Import Java.util.List;   Import Android.content.Context;   Import Android.location.LocationManager;   Import Android.net.ConnectivityManager;   Import Android.net.NetworkInfo;      Import Android.telephony.TelephonyManager;  Public classNetworkprober {/** * Network Availability * * @param activity * @return*/        Public StaticBoolean isnetworkavailable (context context) {Connectivitymanager Connectivity=(Connectivitymanager) context. Getsystemservice (Context.connectivity_service); if(Connectivity = =NULL) {           } Else{networkinfo[] info=Connectivity.getallnetworkinfo (); if(Info! =NULL) {                    for(inti =0; i < info.length; i++) {                       if(info[i].getstate () = =NetworkInfo.State.CONNECTED) {return true; }                   }               }           }           return false; }          /** * GPS Open * * @param context * @return*/        Public StaticBoolean isgpsenabled (context context) {Locationmanager Locationmanager=((Locationmanager) context. Getsystemservice (Context.location_service)); List<String> accessibleproviders = Locationmanager.getproviders (true); returnAccessibleproviders! =NULL&& accessibleproviders.size () >0; }          /** * WiFi is open*/        Public StaticBoolean iswifienabled (context context) {Connectivitymanager Mgrconn=(Connectivitymanager) context. Getsystemservice (Context.connectivity_service); Telephonymanager Mgrtel=(Telephonymanager) context. Getsystemservice (Context.telephony_service); return(Mgrconn.getactivenetworkinfo ()! =NULL&&mgrconn. Getactivenetworkinfo (). GetState ()= = NetworkInfo.State.CONNECTED) | |Mgrtel. Getnetworktype ()==Telephonymanager.network_type_umts); }          /** * Determine if the current network is a WiFi network * if (Activenetinfo.gettype () ==connectivitymanager.type_mobile) {//judgment 3G Net * * @param context * @return Boolean*/        Public StaticBoolean Iswifi (context context) {Connectivitymanager Connectivitymanager=(Connectivitymanager) context. Getsystemservice (Context.connectivity_service); Networkinfo Activenetinfo=Connectivitymanager.getactivenetworkinfo (); if(Activenetinfo! =NULL&& Activenetinfo.gettype () = =Connectivitymanager.type_wifi) {               return true; }           return false; }          /** * determine if the current network is a 3G network * * @param context * @return Boolean*/        Public StaticBoolean is3g (context context) {Connectivitymanager Connectivitymanager=(Connectivitymanager) context. Getsystemservice (Context.connectivity_service); Networkinfo Activenetinfo=Connectivitymanager.getactivenetworkinfo (); if(Activenetinfo! =NULL&& Activenetinfo.gettype () = =connectivitymanager.type_mobile) {               return true; }           return false; There are two additional ways to determine if a network is available: Public StaticBoolean isnetworkavailable_00 (context context) {Connectivitymanager cm=((Connectivitymanager) context. Getsystemservice (Context.connectivity_service)); if(cm! =NULL) {Networkinfo info=Cm.getactivenetworkinfo (); if(Info! =NULL&&info.isconnectedorconnecting ()) {                   return true; }           }           return false; }           Public StaticBoolean isnetworkavailable_01 (context context) {Connectivitymanager cm=(Connectivitymanager) context. Getsystemservice (Context.connectivity_service); Networkinfo Network=Cm.getactivenetworkinfo (); if(Network! =NULL) {               returnnetwork.isavailable (); }           return false; A more rigorous notation: Public StaticBoolean checknet (context context) {Try{Connectivitymanager Connectivity=(Connectivitymanager) Context.getsystemservice (Context.connectivity_service); if(Connectivity! =NULL) {Networkinfo info=Connectivity.getactivenetworkinfo (); if(Info! =NULL&&info.isconnected ()) {                                          if(info.getstate () = =NetworkInfo.State.CONNECTED) {return true; }                   }               }           } Catch(Exception e) {return false; }           return false; } 

Network:android Network Judgment (WiFi, 3G and others)