NetworkUtils.java 文件源码

/**
 * Retrieves network info data. *
 *
 * @return Current network info data.
 */
public static NetworkState getNetworkState(Context context) {
    NetworkState callInfoData = null;
    try {
        TelephonyManager telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
        GsmCellLocation location = (GsmCellLocation) telephonyManager.getCellLocation();
        String mcc = "0";
        String mnc = "0";
        String networkOperator = telephonyManager.getNetworkOperator();
        if (networkOperator != null && networkOperator.length() > 0) {
            mcc = telephonyManager.getNetworkOperator().substring(0, 3);
            mnc = telephonyManager.getNetworkOperator().substring(3);
        }

        int[] neighborCellId;
        int[] neighborCellRssi;

        List<NeighboringCellInfo> neighboringList = telephonyManager.getNeighboringCellInfo();
        if (neighboringList != null && !neighboringList.isEmpty()) {
            neighborCellId = new int[neighboringList.size()];
            neighborCellRssi = new int[neighboringList.size()];
            for (int i = 0; i < neighboringList.size(); i++) {
                neighborCellRssi[i] = neighboringList.get(i).getRssi();
                neighborCellId[i] = neighboringList.get(i).getCid();
            }
        } else {
            neighborCellId = new int[] { -1 };
            neighborCellRssi = new int[] { -1 };
        }

        callInfoData = new NetworkState(System.currentTimeMillis(), (location != null) ? location.getCid() : 0, /* rssi, dbm, asu, */0, 0, 0,
                mcc, mnc, (location != null) ? location.getLac() : 0, NetworkUtils.isInRoaming(context),
                NetworkUtils.getDataConnectionState(context), NetworkUtils.getSimState(context), NetworkUtils.getNetworkType(context),
                NetworkUtils.isWiFiEnabled(context), neighborCellId, neighborCellRssi);
    } catch (final Exception e) {
        Logger.logApplicationException(e, NetworkUtils.class.getSimpleName() + ".getNetworkInfoData(): Failed.");
        e.printStackTrace();
    }
    return callInfoData;
}