From Forum Nokia Wiki

ID		Creation date	July 29, 2008
Platform	S60	Tested on devices	N70, N95, N96
Category	Python	Subcategory	Location Based Services

Keywords (APIs, classes, methods, functions): cellid, gsm ,audio

Overview

This is a small code snippet that exhibits how powerful the location module is. Location-based applications are very attractive and very powerful. So this article presents an example that shows you how to play a song repeatedly when the cell id changes. Using songs is just an example of what could be done automatically when the current cell id changes.

Preconditions

Note: The location module requires capabilities ReadDeviceData, ReadUserData and Location starting with S60 3rd Edition.

Code Snippet

import location
import appuifw
import e32
import audio
 
class LocationInformerApp:
    def __init__(self):
        self.lock=e32.Ao_lock()
        self.exitflag = 0
        self.old_exit_key_handler=appuifw.app.exit_key_handler
        self.old_app_body=appuifw.app.body
        appuifw.app.exit_key_handler=self.set_exit
        appuifw.app.title = u'Wiki Code'
 
    def set_exit(self):
        appuifw.app.body = self.old_app_body
        self.exitflag=1
 
 
 
    def run(self):
        print u'*** Location Log ***'
        prevLoc = u''
        while not self.exitflag:
            if prevLoc <> location.gsm_location():
                print location.gsm_location()[3]
                p = audio.Sound.open("c:\\test.mp3")   #open the soundfile to play
                p.play()     # play the sound file for three times this is optional
            prevLoc = location.gsm_location()
            e32.ao_sleep(0.1)
 
 
 
appuifw.app.screen='normal'
lapp=LocationInformerApp()
lapp.run()

Postconditions

• Initially, when the application starts it plays a song, and when the cellid changes the applications plays the song again right from the beginning.

• The code can be easily modified such that the device plays different songs in different region that have different cellid.

References

• How to get info on cell location

• Location Module

• Playing a Sound File

• How to switch profiles