CellManager.java 文件源码

/**
 * Create a measure from current CellInfo
 *
 * @return a current measure
 */
public Measure createMeasure() {
    // Create a measure
    Measure m = new Measure();
    m.timestamp = System.currentTimeMillis();
    TelephonyManager tel = (TelephonyManager) app.getSystemService(Context.TELEPHONY_SERVICE);
    for (CellInfo ci : tel.getAllCellInfo()) {
        TowerInfo ti = new TowerInfo();
        if (ci instanceof CellInfoCdma) {
            ti.type = TowerInfo.CDMA;
            ti.id = ((CellInfoCdma) ci).getCellIdentity().getBasestationId();
            ti.psc = -1;
            ti.dbm = ((CellInfoCdma) ci).getCellSignalStrength().getDbm();
        } else if (ci instanceof CellInfoGsm) {
            ti.type = TowerInfo.GSM;
            ti.id = ((CellInfoGsm) ci).getCellIdentity().getCid();
            ti.psc = -1; // undefined for GSM
            ti.dbm = ((CellInfoGsm) ci).getCellSignalStrength().getDbm();
        } else if (ci instanceof CellInfoLte) {
            ti.type = TowerInfo.LTE;
            ti.id = ((CellInfoLte) ci).getCellIdentity().getCi();
            ti.psc = -1;
            ti.dbm = ((CellInfoLte) ci).getCellSignalStrength().getDbm();
        } else if (ci instanceof CellInfoWcdma) {
            ti.type = TowerInfo.WCDMA;
            ti.id = ((CellInfoWcdma) ci).getCellIdentity().getCid();
            ti.psc = ((CellInfoWcdma) ci).getCellIdentity().getPsc();
            ti.dbm = ((CellInfoWcdma) ci).getCellSignalStrength().getDbm();
        }
        m.towerInfos.add(ti);
    }
    return m;
}