Java tutorial
//package com.java2s; /* * * Copyright (c) 2016 [akingyin@163.com] * * Licensed under the Apache License, Version 2.0 (the "License?); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * */ import android.content.Context; import android.net.ConnectivityManager; import android.net.NetworkInfo; public class Main { public static boolean isNetConnected(Context context) { ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); if (cm != null) { NetworkInfo[] infos = cm.getAllNetworkInfo(); if (infos != null) { for (NetworkInfo ni : infos) { if (ni.isConnected()) { return true; } } } } return false; } }