NetUtils

package com.ddsyapp.cloudteacher.http;

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.DhcpInfo;
import android.net.NetworkInfo;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;

import com.ddsyapp.CTApplication;

/**
 * 网络工具类
 *
 * @author liubo
 *
 */
public class NetUtil {

    /**
     * 有 或者没有 网络连接
     *
     * @return
     */
    public static boolean isNETConnected() {
        if (isWIFIConnectivity() || isMobleConnectivity()) {
            return true;
        } else {
            return false;
        }
    }

    /**
     * @Description 判断WiFi是 否连接
     * @return
     */
    public static boolean isWIFIConnectivity() {
        ConnectivityManager manager = (ConnectivityManager) CTApplication.appContext
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo networkInfo = manager
                .getNetworkInfo(ConnectivityManager.TYPE_WIFI);
        if (networkInfo != null) {
            return networkInfo.isConnected();
        }
        return false;
    }

    /**
     * @Description 判断流量是 否连接
     * @return
     */
    public static boolean isMobleConnectivity() {
        ConnectivityManager manager = (ConnectivityManager) CTApplication.appContext
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo networkInfo = manager
                .getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
        if (networkInfo != null) {
            return networkInfo.isConnected();
        }
        return false;
    }

    /**
     * 获取当前连接的DHCP信息
     *
     * @param context
     * @return
     */
    public static DhcpInfo getDHCP() {
        WifiManager wManagerForCheck = (WifiManager) CTApplication.appContext
                .getSystemService(Context.WIFI_SERVICE);
        if (wManagerForCheck.isWifiEnabled()) {
            DhcpInfo mDhcpInfo = wManagerForCheck.getDhcpInfo();
            return mDhcpInfo;
        } else {
            return null;
        }

    }

    /**
     * 获取当前连接的WIFI名称
     *
     * @return
     */
    public static String getWifiInfo() {
        WifiManager wifiMgr = (WifiManager) CTApplication.appContext
                .getSystemService(Context.WIFI_SERVICE);
        WifiInfo info = wifiMgr.getConnectionInfo();
        String wifiId = info != null ? info.getSSID() : "无连接";
        return wifiId;
    }
}

附注：CTApplication.appContext是上下文Context，替换为自己的即可