Java tutorial
//package com.java2s; import android.content.Context; import android.net.ConnectivityManager; import android.net.NetworkInfo; import android.telephony.TelephonyManager; public class Main { public static boolean isConnectivity(Context context) { ConnectivityManager connectivityManager = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); TelephonyManager telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE); return ((connectivityManager.getActiveNetworkInfo() != null && connectivityManager.getActiveNetworkInfo().getState() == NetworkInfo.State.CONNECTED) || telephonyManager.getNetworkType() == TelephonyManager.NETWORK_TYPE_UMTS); } }