DeviceApi18.java 文件源码

public static void loadCellInfo(TelephonyManager tm, Device pDevice) {
    int lCurrentApiVersion = android.os.Build.VERSION.SDK_INT;
    try {
        if (pDevice.mCell == null) {
            pDevice.mCell = new Cell();
        }
        List<CellInfo> cellInfoList = tm.getAllCellInfo();
        if (cellInfoList != null) {
            for (final CellInfo info : cellInfoList) {

                //Network Type
                pDevice.mCell.setNetType(tm.getNetworkType());

                if (info instanceof CellInfoGsm) {
                    final CellSignalStrengthGsm gsm = ((CellInfoGsm) info).getCellSignalStrength();
                    final CellIdentityGsm identityGsm = ((CellInfoGsm) info).getCellIdentity();
                    // Signal Strength
                    pDevice.mCell.setDBM(gsm.getDbm()); // [dBm]
                    // Cell Identity
                    pDevice.mCell.setCID(identityGsm.getCid());
                    pDevice.mCell.setMCC(identityGsm.getMcc());
                    pDevice.mCell.setMNC(identityGsm.getMnc());
                    pDevice.mCell.setLAC(identityGsm.getLac());

                } else if (info instanceof CellInfoCdma) {
                    final CellSignalStrengthCdma cdma = ((CellInfoCdma) info).getCellSignalStrength();
                    final CellIdentityCdma identityCdma = ((CellInfoCdma) info).getCellIdentity();
                    // Signal Strength
                    pDevice.mCell.setDBM(cdma.getDbm());
                    // Cell Identity
                    pDevice.mCell.setCID(identityCdma.getBasestationId());
                    pDevice.mCell.setMNC(identityCdma.getSystemId());
                    pDevice.mCell.setLAC(identityCdma.getNetworkId());
                    pDevice.mCell.setSID(identityCdma.getSystemId());

                } else if (info instanceof CellInfoLte) {
                    final CellSignalStrengthLte lte = ((CellInfoLte) info).getCellSignalStrength();
                    final CellIdentityLte identityLte = ((CellInfoLte) info).getCellIdentity();
                    // Signal Strength
                    pDevice.mCell.setDBM(lte.getDbm());
                    pDevice.mCell.setTimingAdvance(lte.getTimingAdvance());
                    // Cell Identity
                    pDevice.mCell.setMCC(identityLte.getMcc());
                    pDevice.mCell.setMNC(identityLte.getMnc());
                    pDevice.mCell.setCID(identityLte.getCi());

                } else if  (lCurrentApiVersion >= Build.VERSION_CODES.JELLY_BEAN_MR2 && info instanceof CellInfoWcdma) {
                    final CellSignalStrengthWcdma wcdma = ((CellInfoWcdma) info).getCellSignalStrength();
                    final CellIdentityWcdma identityWcdma = ((CellInfoWcdma) info).getCellIdentity();
                    // Signal Strength
                    pDevice.mCell.setDBM(wcdma.getDbm());
                    // Cell Identity
                    pDevice.mCell.setLAC(identityWcdma.getLac());
                    pDevice.mCell.setMCC(identityWcdma.getMcc());
                    pDevice.mCell.setMNC(identityWcdma.getMnc());
                    pDevice.mCell.setCID(identityWcdma.getCid());
                    pDevice.mCell.setPSC(identityWcdma.getPsc());

                } else {
                    Log.i(TAG, mTAG + "Unknown type of cell signal!"
                            + "\n ClassName: " + info.getClass().getSimpleName()
                            + "\n ToString: " + info.toString());
                }
                if (pDevice.mCell.isValid()) {
                    break;
                }
            }
        }
    } catch (NullPointerException npe) {
       Log.e(TAG, mTAG + "loadCellInfo: Unable to obtain cell signal information: ", npe);
    }
}