/**	 * 获取当前网络类型	 * @return 0：没有网络   1：WIFI网络   2：WAP网络    3：NET网络	 */	public int getNetworkType() {		int netType = 0;		ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);		NetworkInfo networkInfo = connectivityManager.getActiveNetworkInfo();		if (networkInfo == null) {			return netType;		}				int nType = networkInfo.getType();		if (nType == ConnectivityManager.TYPE_MOBILE) {			String extraInfo = networkInfo.getExtraInfo();			if(!StringUtils.isEmpty(extraInfo)){				if (extraInfo.toLowerCase().equals("cmnet")) {					netType = NETTYPE_CMNET;				} else {					netType = NETTYPE_CMWAP;				}			}		} else if (nType == ConnectivityManager.TYPE_WIFI) {			netType = NETTYPE_WIFI;		}		return netType;	}