CDMADevice.java 文件源码

/**
 * @return The System id, or -1 if it is unknown
 */
public int getSid() {
    CellLocation cellLoc = mTelephonyManager.getCellLocation();
    if(cellLoc != null && cellLoc instanceof CdmaCellLocation) {
        return ((CdmaCellLocation) cellLoc).getSystemId();
    }
    else {
        return -1;
    }
}