Java tutorial
//package com.java2s; import android.content.Context; import android.net.ConnectivityManager; import android.net.NetworkInfo; public class Main { public static boolean isConnectedWifi(Context context) { ConnectivityManager connectivityManager = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo networkInfo = null; if (connectivityManager != null) { networkInfo = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI); } return networkInfo == null ? false : networkInfo.isConnected(); } public static boolean isConnected(Context context) { ConnectivityManager connectivityManager = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); if (connectivityManager.getActiveNetworkInfo() != null && connectivityManager.getActiveNetworkInfo().isAvailable() && connectivityManager.getActiveNetworkInfo().isConnected()) { return true; } else { return false; } } }