CellTowerListCdma.java 文件源码

/**
 * Adds or updates a cell tower.
 * <p>
 * If the cell tower is already in the list, it is replaced; if not, a new
 * entry is created.
 * <p>
 * This method will set the cell's identity data, its signal strength and
 * whether it is the currently serving cell. If the API level is 18 or 
 * higher, it will also set the generation.
 * @return The new or updated entry.
 */
@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
public CellTowerCdma update(CellInfoCdma cell) {
    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR1) 
        return null;
    CellIdentityCdma cid = cell.getCellIdentity();
    CellTowerCdma result = this.get(cid.getSystemId(), cid.getNetworkId(), cid.getBasestationId());
    if (result == null) {
        result = new CellTowerCdma(cid.getSystemId(), cid.getNetworkId(), cid.getBasestationId());
        this.put(result.getText(), result);
    }
    result.setCellInfo(true);
    result.setDbm(cell.getCellSignalStrength().getDbm());
    result.setServing(cell.isRegistered());
    return result;
}