CellbasedLocationProvider.java 文件源码

/**
 * Handle a modem event by trying to pull all information. The parameter inc defines if the
 * measurement counter should be increased on success.
 * @param inc True if the measurement counter should be increased.
 */
private void handle(boolean inc) {
    if (telephonyManager == null) return;
    final List<android.telephony.CellInfo> cellInfos = telephonyManager.getAllCellInfo();
    final List<NeighboringCellInfo> neighbours = telephonyManager.getNeighboringCellInfo();
    final CellLocation cellLocation = telephonyManager.getCellLocation();
    if (cellInfos == null || cellInfos.isEmpty()) {
        if (neighbours == null || neighbours.isEmpty()) {
            if (cellLocation == null || !(cellLocation instanceof GsmCellLocation)) return;
        }
    }
    if (inc) measurement.getAndIncrement();
    add(cellLocation);
    addNeighbours(neighbours);
    addCells(cellInfos);
    synchronized (recentCells) {
        cleanup();
    }
}