Android - 判断目前是否使用的是Wifi网络

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public static boolean isWifiActive(Context icontext){		Context context = icontext.getApplicationContext();            ConnectivityManager connectivity = (ConnectivityManager) context                    .getSystemService(Context.CONNECTIVITY_SERVICE);        NetworkInfo[] info;        if (connectivity != null) {                info = connectivity.getAllNetworkInfo();                if (info != null) {                    for (int i = 0; i < info.length; i++) {                        if (info[i].getTypeName().equals("WIFI") && info[i].isConnected()) {                            return true;                        }                    }                }            }            return false;   	}