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;

/**
 * 網絡工具類
 *
 * @author liubo
 *
 */
public class NetUtil {

    /**
     * 有 或者沒有 網絡連接
     *
     * @return
     */
    public static boolean isNETConnected() {
        if (isWIFIConnectivity() || isMobleConnectivity()) {
            return true;
        } else {
            return false;
        }
    }

    /**
     * @Description 判斷WiFi是 否連接
     * @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 判斷流量是 否連接
     * @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;
    }

    /**
     * 獲取當前連接的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;
        }

    }

    /**
     * 獲取當前連接的WIFI名稱
     *
     * @return
     */
    public static String getWifiInfo() {
        WifiManager wifiMgr = (WifiManager) CTApplication.appContext
                .getSystemService(Context.WIFI_SERVICE);
        WifiInfo info = wifiMgr.getConnectionInfo();
        String wifiId = info != null ? info.getSSID() : "無連接";
        return wifiId;
    }
}

附註：CTApplication.appContext是上下文Context，替換爲自己的即可