Java tutorial
//package com.java2s; import android.content.Context; import android.net.ConnectivityManager; import android.net.NetworkInfo; public class Main { public static int getNetworkState(Context context) { final ConnectivityManager connectivityManager = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); final NetworkInfo wifiNetWorkInfo = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI); final NetworkInfo mobileNetWorkInfo = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE); if (wifiNetWorkInfo != null && wifiNetWorkInfo.isAvailable()) { return ConnectivityManager.TYPE_WIFI; } else if (mobileNetWorkInfo != null && mobileNetWorkInfo.isAvailable()) { return ConnectivityManager.TYPE_MOBILE; } else { return -1; } } }