判断是否有网络，是否有wifi

package com.zm.bala.utils;import android.content.Context;import android.net.ConnectivityManager;import android.net.NetworkInfo;public class NetWorkCheck {/** * 判断是否有网络连接 */public static boolean isNetworkConnected(Context context) {if (context != null) {ConnectivityManager mConnectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);NetworkInfo mNetworkInfo = mConnectivityManager.getActiveNetworkInfo();if (mNetworkInfo != null) {return mNetworkInfo.isAvailable();}}return false;}/** * 判断WIFI网络是否可用  */public static boolean isWifiConnected(Context context) {if (context != null) {ConnectivityManager mConnectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);NetworkInfo mWiFiNetworkInfo = mConnectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);if (mWiFiNetworkInfo != null) {return mWiFiNetworkInfo.isAvailable();}}return false;}}