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With the open source Geo2tag platform, developers can use JSON or XML to manage location references in apps for Nokia X and Nokia Asha phones. In this webinar, we’ll show how to use the Geo2tag API and how to manage a local database of georeferences. We’ll begin the training by introducing the fundamentals of Location Based Services and the REST API of Geo2Tag LBS Platform (www.geo2tag.org). We’ll focus on networking, JSON and web services. Then we will demonstrate several applications developed on top of Geo2Tagand share the newest enhancements to the platform. We’ll end the training with a discussion of integrating Geo2Tag and third-party map widgets.
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LBS for Nokia X and Asha using Geo2tag
Kirill KrinkinFRUCT
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 sites
Geo2Tag terminologyTag: tuple <t, L, B, H, data>,
● t – time● Coordinates (elliptic)
● b: latitude● l: longitude● h: altitude
● 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
*) alpha version is available
Geo2Tag LBS Platform installation
Geo2Tag preparation
● Install your own server http://download.geo2tag.org● or use free test instance:
– Ask for creating service [email protected]
– 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)– qmaps-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
Your application’s target audience is on the move, not in a comfy chair.
© Nokia 2012 S40TT_webinar_ux_location.pptx v. 0.1 2012-05-02 Jan Krebber
Your application will be used with thumbs only.
© Nokia 2012 S40TT_webinar_ux_location.pptx v. 0.1 2012-05-02 Jan Krebber
Allow privacy.
© Nokia 2012 S40TT_webinar_ux_location.pptx v. 0.1 2012-05-02 Jan Krebber
Consider lists instead of maps.
© Nokia 2012 S40TT_webinar_ux_location.pptx v. 0.1 2012-05-02 Jan Krebber
1 2 3
Merge items on a map instead of stacking them.
© Nokia 2012 S40TT_webinar_ux_location.pptx v. 0.1 2012-05-02 Jan Krebber
1 2 3 4
Use a map thumbnail in a view that contains non-map items.
© Nokia 2012 S40TT_webinar_ux_location.pptx v. 0.1 2012-05-02 Jan Krebber
1 2
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
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