安卓关于网络的判断问题

推荐一个工具类吧 但是有部分的车机系统他就不支持绝大部分公共代码

在不是wifi的情况下 去获取以太网络信息 来最终判断是否是有网络

package com.tencent.wcenter.utils;

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.telephony.TelephonyManager;

import com.tencent.jsbridge.LogUtils;
import com.tencent.wcenter.constants.Constant;

public class NetWorkUtils {
    /**
     *      * 判断是否有网络连接
     * <p>
     *      * @param context
     * <p>
     *      * @return
     * <p>
     *      
     */

    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
     * <p>
     *      * @param context
     * <p>
     *      * @return
     * <p>
     *      
     */

    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;

    }

//这里的这个方法就是判别车机自身带有4G网络的方法 
//在不是wifi的情况下  去获取以太网络信息  来最终判断是否是有网络

    public static boolean isNetworkAvailable(Context  mContext) {
        ConnectivityManager connectMgr = (ConnectivityManager) mContext.getSystemService(mContext.CONNECTIVITY_SERVICE);
        NetworkInfo networkInfo = connectMgr.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
        LogUtils.i("isNetworkAvailable", "networkInfo :" + networkInfo);
        if (!networkInfo.isConnected()) {
            networkInfo = connectMgr.getNetworkInfo(ConnectivityManager.TYPE_ETHERNET);
            LogUtils.i("isNetworkAvailable", "networkInfo :" + networkInfo);
        }
        return networkInfo.isConnected();
    }





    /**
     *      * 判断MOBILE网络是否可用
     * <p>
     *      * @param context
     * <p>
     *      * @return
     * <p>
     *      
     */

    public static boolean isMobileConnected(Context context) {

        if (context != null) {

            ConnectivityManager mConnectivityManager = (ConnectivityManager) context
                    .getSystemService(Context.CONNECTIVITY_SERVICE);

            NetworkInfo mMobileNetworkInfo = mConnectivityManager

                    .getNetworkInfo(ConnectivityManager.TYPE_MOBILE);

            if (mMobileNetworkInfo != null) {

                return mMobileNetworkInfo.isAvailable();

            }

        }

        return false;

    }


    /**
     *      * 获取当前网络连接的类型信息
     * <p>
     *      * @param context
     * <p>
     *      * @return
     * <p>
     *      
     */

    public static int getConnectedType(Context context) {

        if (context != null) {

            ConnectivityManager mConnectivityManager = (ConnectivityManager) context

                    .getSystemService(Context.CONNECTIVITY_SERVICE);

            NetworkInfo mNetworkInfo = mConnectivityManager.getActiveNetworkInfo();

            if (mNetworkInfo != null && mNetworkInfo.isAvailable()) {

                return mNetworkInfo.getType();

            }

        }
        return -1;

    }


    /**
     *      * 获取当前的网络状态 ：没有网络0：WIFI网络1：3G网络2：2G网络3
     * <p>
     *      *
     * <p>
     *      * @param context
     * <p>
     *      * @return
     * <p>
     *      
     */

    public static int getAPNType(Context context) {

        int netType = 0;

        ConnectivityManager connMgr = (ConnectivityManager) context

                .getSystemService(Context.CONNECTIVITY_SERVICE);

        NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();

        if (networkInfo == null) {

            return netType;

        }

        int nType = networkInfo.getType();

        LogUtils.i("NetWorkUtils","nType="+netType);
        if (nType == ConnectivityManager.TYPE_WIFI) {

            netType = 1;// wifi

        } else if (nType == ConnectivityManager.TYPE_MOBILE) {

            int nSubType = networkInfo.getSubtype();

            TelephonyManager mTelephony = (TelephonyManager) context

                    .getSystemService(Context.TELEPHONY_SERVICE);

            if (nSubType == TelephonyManager.NETWORK_TYPE_UMTS

                    && !mTelephony.isNetworkRoaming()) {

                netType = 2;// 3G

            } else if (nSubType == TelephonyManager.NETWORK_TYPE_LTE){

                netType = 3;// 4G

            }else {
                netType = 4;// 2G
            }

        }

        return netType;

    }

}