Android 获取网络类型

获取网络类型

public class IntenetUtil {
    //没有网络连接
    public static final int NETWORN_NONE = 0;
    //wifi连接
    public static final int NETWORN_WIFI = 1;
    public static final int UnCon_WIFI = 7;
    //手机网络数据连接类型
    public static final int NETWORN_2G = 2;
    public static final int NETWORN_3G = 3;
    public static final int NETWORN_4G = 4;
    public static final int NETWORN_MOBILE = 5;
    public static final int NETWORN_ETHERNET=6;
    /**
     * 获取当前网络连接类型
     * @param context
     * @return
     */
    public static int getNetworkState(Context context) {
        //获取系统的网络服务
        ConnectivityManager connManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        //如果当前没有网络
        if (null == connManager)
            return NETWORN_NONE;
        //获取当前网络类型，如果为空，返回无网络
        NetworkInfo activeNetInfo = connManager.getActiveNetworkInfo();
        if (activeNetInfo == null || !activeNetInfo.isAvailable()) {
            return NETWORN_NONE;
        }
        // 判断是不是连接的是不是wifi
        NetworkInfo wifiInfo = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
        if (null != wifiInfo) {
            NetworkInfo.State state = wifiInfo.getState();
            if (null != state)
                if (state == NetworkInfo.State.CONNECTED
           || state == NetworkInfo.State.CONNECTING) {
                    return NETWORN_WIFI;
                }else if(state == NetworkInfo.State.DISCONNECTED){
                    return UnCon_WIFI;
                }
        }
        // 如果不是wifi，则判断当前连接的是运营商的哪种网络2g、3g、4g等
        NetworkInfo networkInfo = connManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
        if (null != networkInfo) {
            NetworkInfo.State state = networkInfo.getState();
            String strSubTypeName = networkInfo.getSubtypeName();
            if (null != state)
                if (state == NetworkInfo.State.CONNECTED 
           || state == NetworkInfo.State.CONNECTING) {
                    switch (activeNetInfo.getSubtype()) {
                        //如果是2g类型
                        case TelephonyManager.NETWORK_TYPE_GPRS: // 联通2g
                        case TelephonyManager.NETWORK_TYPE_CDMA: // 电信2g
                        case TelephonyManager.NETWORK_TYPE_EDGE: // 移动2g
                        case TelephonyManager.NETWORK_TYPE_1xRTT:
                        case TelephonyManager.NETWORK_TYPE_IDEN:
                            return NETWORN_2G;
                        //如果是3g类型
                        case TelephonyManager.NETWORK_TYPE_EVDO_A: // 电信3g
                        case TelephonyManager.NETWORK_TYPE_UMTS:
                        case TelephonyManager.NETWORK_TYPE_EVDO_0:
                        case TelephonyManager.NETWORK_TYPE_HSDPA:
                        case TelephonyManager.NETWORK_TYPE_HSUPA:
                        case TelephonyManager.NETWORK_TYPE_HSPA:
                        case TelephonyManager.NETWORK_TYPE_EVDO_B:
                        case TelephonyManager.NETWORK_TYPE_EHRPD:
                        case TelephonyManager.NETWORK_TYPE_HSPAP:
                            return NETWORN_3G;
                        //如果是4g类型
                        case TelephonyManager.NETWORK_TYPE_LTE:
                            return NETWORN_4G;
                        default:
                        //中国移动 联通 电信 三种3G制式
                        if (strSubTypeName.equalsIgnoreCase("TD-SCDMA") 
               || strSubTypeName.equalsIgnoreCase("WCDMA") 
               || strSubTypeName.equalsIgnoreCase("CDMA2000")) {
                            return NETWORN_3G;
                        } else {
                            return NETWORN_MOBILE;
                        }
                    }
                }
        }
        NetworkInfo EthernetInfo = connManager.getNetworkInfo(ConnectivityManager.TYPE_ETHERNET);
        if (null != EthernetInfo){
            NetworkInfo.State state = EthernetInfo.getState();
            if (null != state)
                if (state == NetworkInfo.State.CONNECTED || state == NetworkInfo.State.CONNECTING) {
                    return NETWORN_ETHERNET;
                }
        }
        return NETWORN_NONE;
    }
}