Java tutorial
//package com.java2s; /** * Copyright (c) 2013-2014, ?? ??(http://1.playandroid.duapp.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; import android.util.Log; public class Main { private static String LOG_TAG = "NetWorkHelper"; public static boolean isNetworkAvailable(Context context) { ConnectivityManager connectivity = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); if (connectivity == null) { Log.w(LOG_TAG, "couldn't get connectivity manager"); } else { NetworkInfo[] info = connectivity.getAllNetworkInfo(); if (info != null) { for (int i = 0; i < info.length; i++) { if (info[i].isAvailable()) { Log.d(LOG_TAG, "network is available"); return true; } } } } Log.d(LOG_TAG, "network is not available"); return false; } }