CellInfoObserver.java 文件源码

public CellInfo getNewCellInfo() {
    try {
        TelephonyManager tm = (TelephonyManager) CellService.get().getSystemService(Context.TELEPHONY_SERVICE);
        GsmCellLocation location = (GsmCellLocation) tm.getCellLocation();

        /* Why I use this Bitmask:
         * https://stackoverflow.com/questions/9808396/android-cellid-not-available-on-all-carriers#12969638
         */
        int cellID = location.getCid();// & 0xffff;
        int lac = location.getLac();

        String networkOperator = tm.getNetworkOperator();
        int mcc = Integer.parseInt(networkOperator.substring(0, 3));
        int mnc = Integer.parseInt(networkOperator.substring(3));

        return new CellInfo(cellID, lac, mnc, mcc, tm.getNetworkType());
    } catch (Exception e) {
        return new FakeCellInfo();
    }
}