/**     * 获取上网方式     *      * @param mContext     * @return     */    public static String getNetType(Context mContext) {        String netType = "";        ConnectivityManager connectionManager = (ConnectivityManager) mContext                .getSystemService(Context.CONNECTIVITY_SERVICE);        NetworkInfo info = connectionManager.getActiveNetworkInfo();        if (null != info && info.isAvailable()) {            netType = info.getTypeName();        }        return netType;    }    /**     * 判断网络连接是否可用     *      * @param mContext     * @return      */    public static boolean getNetIsVali(Context mContext) {        if (mContext != null) {            ConnectivityManager mConnectivityManager = (ConnectivityManager) mContext                    .getSystemService(Context.CONNECTIVITY_SERVICE);            NetworkInfo mNetworkInfo = mConnectivityManager                    .getActiveNetworkInfo();            if (mNetworkInfo != null) {                return mNetworkInfo.isAvailable();            }        }        return false;    }    /**     * 获取运营商信息     *      * @param mContext     * @return     */    public static String getNetExtraInfo(Context mContext) {        String netExtraInfo = "";        TelephonyManager mTm = (TelephonyManager) mContext                .getSystemService(Context.TELEPHONY_SERVICE);        if (mTm.getSimState() == TelephonyManager.SIM_STATE_READY) {            netExtraInfo = mTm.getSimOperator();            if (null != netExtraInfo) {                if (netExtraInfo.equals("46000")                        || netExtraInfo.equals("46002")                        || netExtraInfo.equals("46007")) {                    // 中国移动                    netExtraInfo = "中国移动";                } else if (netExtraInfo.equals("46001")) {                    // 中国联通                    netExtraInfo = "中国联通";                } else if (netExtraInfo.equals("46003")) {                    // 中国电信                    netExtraInfo = "中国电信";                } else {                    netExtraInfo = "其他";                }            }        }        return netExtraInfo;    }