Categories: S60 3rd Edition, Feature Pack 2 | Series 40 3rd Edition, Feature Pack 2 | Java ME | MIDP 2.0 | Code Examples

This page was last modified 11:15, 14 May 2008.

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Overview

This code snippet demonstrates how to get the mobile cell ID by using Nokia-proprietary system properties in Series 40 and S60 devices. Note that a different system property is used to get the cell ID in Series 40 and S60 devices:

System.getProperty("Cell-ID")

System.getProperty("com.nokia.mid.cellid")

Note: In Series 40 devices the MIDlet needs to be signed to a manufacturer or operator domain; otherwise the property will be null. Signing is not needed for S60 devices.

Source

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
 
public class CellIDMIDlet extends MIDlet implements CommandListener {
    private Form form;
    private Command exitCommand;
    private String S40_cell_id;   // Series 40 cell id property
    private String S60_cell_id;   // S60 cell id property
    
    public void startApp() {
        form = new Form("Getting Cell ID");
        S40_cell_id = System.getProperty("Cell-ID");
        S60_cell_id = System.getProperty("com.nokia.mid.cellid");
        form.append("Series 40 devices: " + S40_cell_id + "\n");
        form.append("S60 devices: " + S60_cell_id);
        exitCommand = new Command("Exit", Command.EXIT, 1);
        form.setCommandListener(this);
        form.addCommand(exitCommand);
        Display.getDisplay(this).setCurrent(form);
    }
 
    public void pauseApp() {
    }
 
    public void destroyApp(boolean unconditional) {
    }
 
    public void commandAction(Command c, Displayable d) {
        if (c == exitCommand) this.notifyDestroyed();
    }
}

Postconditions

When the MIDlet is run in either a Series 40 or S60 device, a cell ID should be shown on the Form (one will have a numeric value and another will have 'null').

See also

Java ME System properties