android - getAllCellInfo - 重复值

Question

我正在使用 getAllCellInfo 从我的手机(unrooted LG G5 - 它的值(value))获取服务和相邻小区信息，但该函数返回所有相邻测量塔的重复数据。在我所在的地区，我的测试数据大部分时间都是3G(WCDMA)。这是我的 WCDMA 结果的摘录，显示了原始字符串和解析值(为便于阅读而引用的代码):

Site_0
Registered: true
dBm: -99
Raw str: CellIdentityWcdma:{ mMcc=655 mMnc=1 mLac=63 mCid=9538943 mPsc=190 
mUarfcn=10562}

Site_1
Registered: false
dBm: -101
Raw str: CellIdentityWcdma:{ mMcc=2147483647 mMnc=2147483647 mLac=2147483647 
mCid=2147483647 mPsc=477 mUarfcn=10562}

Site_2
Registered: false
dBm: -103
Raw str: CellIdentityWcdma:{ mMcc=2147483647 mMnc=2147483647 mLac=2147483647 
mCid=2147483647 mPsc=331 mUarfcn=10562}

Site_3
Registered: false
dBm: -103
Raw str: CellIdentityWcdma:{ mMcc=2147483647 mMnc=2147483647 mLac=2147483647 
mCid=2147483647 mPsc=364 mUarfcn=10562}

Site_4
Registered: false
dBm: -105
Raw str: CellIdentityWcdma:{ mMcc=2147483647 mMnc=2147483647 mLac=2147483647 
mCid=2147483647 mPsc=50 mUarfcn=10562}

请注意，服务小区和相邻小区已被识别(已注册)并显示各自的信号强度(dBm)，并给出了服务小区的小区标识数据，但相邻小区标识数据全部困惑(2147483647 = Integer.MAX_VALUE = unknown ，并重复 UARFCN)。我用来获取打印单元格信息的代码 + 我开始编写的帮助程序类:

        List<CellInfo> infos = tel.getAllCellInfo();
        for (int i = 0; i<infos.size(); ++i) {
            try {
                CellInfo info = infos.get(i);
                if (info instanceof CellInfoGsm)
                {
                    //stuff
                }
                else if (info instanceof CellInfoLte)
                {
                    //stuff
                }
                else if (info instanceof CellInfoWcdma)
                {
                    WCDMAStruct wcdma = new WCDMAStruct(this);
                    wcdma.parse(((CellInfoWcdma)info).getCellIdentity());

                    list += "Site_"+i + "\r\n";
                    list += "Registered: " + info.isRegistered() + "\r\n";
                    CellSignalStrengthWcdma wcdmaS = ((CellInfoWcdma) info).getCellSignalStrength();
                    list += "dBm: " + wcdmaS.getDbm() + "\r\n";
                    list += "Raw str: " + wcdma.CellInfoStr + "\r\n\r\n";
                }

            } catch (Exception ex) {
                Log.i("neighboring error 2: " ,ex.getMessage());
            }

WCDMA辅助类的解析函数:

    //parse input data object to variables
public void parse(CellIdentityWcdma input)
{
    CellInfoStr = input.toString();

    CID = input.getCid();
    if(CID == Integer.MAX_VALUE)    //unknown
        CID = UNKNOWN;

    LAC = input.getLac();
    if(LAC == Integer.MAX_VALUE)    //unknown
        LAC = UNKNOWN;

    MCC = input.getMcc();
    if(MCC == Integer.MAX_VALUE)    //unknown
        MCC = UNKNOWN;

    MNC = input.getMnc();
    if(MNC == Integer.MAX_VALUE)    //unknown
        MNC = UNKNOWN;

    PSC = input.getPsc();
    if(PSC == Integer.MAX_VALUE)    //unknown
        PSC = UNKNOWN;

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N)
    {
        chnlNum_DL = input.getUarfcn();
        if(chnlNum_DL == Integer.MAX_VALUE)
            chnlNum_DL = UNKNOWN;
        else
        {
            FreqBand = getFreqBand(chnlNum_DL); //freq band from UARFCN
        }
    }
}

所以我不知道其他人是否遇到同样的问题，或者可以在他们的设备上进行测试？类似 Unresolved 帖子提出了相同的问题( 1 )，或者在某些设备和 SDK 版本上 getAllCellInfo() = null 的位置...有人请提供一些建议如何解决它吗？

Answer 1

在 WCDMA mCid=2147483647 中，这意味着 Cell 是Unknown。请查看此链接了解更多详情:fields included in Android CellInof data extracts .