java - 如何获取 3G 网络的小区 ID？

Question

我得到错误的 3G 网络小区 ID，我得到正确的 2G 小区 ID 值，我不明白我哪里出错了。请帮忙

TelephonyManager telephonyManager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
        GsmCellLocation cellLocation = (GsmCellLocation) telephonyManager
                .getCellLocation();

        //Cell Id, LAC 
        int cid = cellLocation.getCid();
        int lac = cellLocation.getLac();

        //MCC
        String MCC =telephonyManager.getNetworkOperator();
        int mcc = Integer.parseInt(MCC.substring(0, 3));
        String mcc1 = String.valueOf(mcc);

        //Operator name
        String operatoprName = telephonyManager.getNetworkOperatorName();

我还在 AndroiManifest.xml 文件 ACCESS_COARSE_LOCATION 中授予了权限，ACCESS_NETWORK_STATE

Answer 1

解决方案在以下线程中突出显示:Android: CellID not available on all carriers?

简而言之，在 3G 网络中，您需要使用 0xffff 屏蔽从 getCid() 获得的号码。以下是一个 fragment :

GsmCellLocation cellLocation = (GsmCellLocation)telm.getCellLocation();

new_cid = cellLocation.getCid() & 0xffff;
new_lac = cellLocation.getLac() & 0xffff;

希望对你有帮助