RadioSectionFragment.java 文件源码

/**
 * Requeries neighboring cells
 */
protected void updateNeighboringCellInfo() {
    try {
        /*
         * NeighboringCellInfo is not supported on some devices and will return no data. It lists
         * only GSM and successors' cells, but not CDMA cells.
         */
        List<NeighboringCellInfo> neighboringCells = mainActivity.telephonyManager.getNeighboringCellInfo();
        String networkOperator = mainActivity.telephonyManager.getNetworkOperator();
        mCellsGsm.updateAll(networkOperator, neighboringCells);
        mCellsLte.updateAll(networkOperator, neighboringCells);
    } catch (SecurityException e) {
        // Permission not granted, can't retrieve cell data
        Log.w(TAG, "Permission not granted, cannot get neighboring cell info");
    }
}