nokia asha webinar: developing location-based services for nokia asha phones by using geo2tag

Nokia Asha LBSDevelopment withGeo2Tag

Kirill KrinkinFRUCT

kirill.krinkin@fruct.org @kkvt

What is Geo2Tag

● Geo-tagging (geo-coding) platform● High performance database for spacial/temporal tag filtration● RESTful service

Geo2Tag does not provide:– map services

– data back-end (in current version)

Geo2Tag terminology

Tag: tuple <t, L, B, H, data>,● t – time● B,L,H – coordinates● data – text data ~1K

Channel: classifier for group of tags

Geo2Tag: channels and tagsLBS Platform

Канал

Channel

Channel

Channel

Channel

Tag- time- coordinates- data (link)

Filtration- time- radius- figure (2D or 3D)

Tag

Tag

Tag

Geo2Tag architecture

Que

ry e

ngin

e

Session manager

HP database

BLOBs

cache

Indexer

Cluster/cloudinfrastructure

backend

clients

Libraries: jgeo, http_reqs

Session cache

web

Asha

web

Qt-based

Android

JSON

System cache

Geo2Tag LBS Platform installation

http://download.geo2tag.org/

Geo2Tag preparation

● Install your own server http://download.geo2tag.org● Free test instance:

– Ask for creating service geo2tag-info@osll.ru

– Register users http://194.85.173.9:20005/register.php?db_name=dbname

Getting HERE keys

com.nokia.maps.map.MapCanvas

This class offers an abstract base class for providing a method of showing map content on a Canvas

Obtaining coordinates

Example layout

Map widget implementation

Implementation of Geo2Tag requests

Getting coordinates on device

Libraries

Nokia HERE (./plugins/maps_api/lib)– maps-core.jar

– maps-components.jar – Infobubles, Touchable buttons and so on

– maps-gesture.jar – Add Gesture API support

– maps-kml.jar – JSR#172 is required for KLM data

– places.jar – Geocoding and reverse geocoding

– routing.jar – Routing services

Geo2Tag For Asha:– j2megeo.jar (sources: https://github.com/geo2tag/jgeo2me)

Map widget

Basic map widget

Supports gestures

Authentication

InfoBubble

FocalObserver and centering

Centering and add commands

ClearMap command

Show nearest tags

Geo2Tag requests

doLoginRequest

doSetDbRequest

doFilterCircleRequest

doWriteTag

.doLoginRequest

.doSetDbRequest

.doFilterCircleRequest

.doWriteTagRequest

Resources

● Example: https://github.com/geo2tag/asha-map-example

● Map Forms in JavaME http://alturl.com/t99du

● Determining Current Location via Cell ID http://alturl.com/3pvxn

● Geo2Tag development resources:

– https://github.com/geo2tag

– http://geo2tag.atlassian.net/

– http://download.geo2tag.org/

Thank you.

Questions?

For more information:

● http://geo2tag.org● http://fruct.org