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-->  <!DOCTYPE concept PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd"><concept id="GUID-DF756D6C-1E03-4EC0-B074-09611D122359" xml:lang="en"><title>Storing

location information on a mobile device</title><prolog><metadata><keywords></keywords></metadata></prolog><conbody>

<p><xref href="GUID-BC8D1F02-3FBB-406A-80CE-5836E61EBD82.dita">Location information</xref> may

be stored as database entries called <i>landmarks</i> that contain at least

a name and a location.</p>

<p>Typical use cases include:</p>

<ul>

<li><p>Sending location information that is stored according to

the World Geodetic System (WGS 84) to another device.</p></li>

<li><p>Finding sites within a set distance of a stored point.</p>

</li>

</ul>

<note>

<p>The SDK does not include a map API, and therefore you must use a third

party API to display the location information you receive on a map. <draft-comment time="2009-04-21T13:48">Does this also apply to S60 5th Edition?</draft-comment></p>

</note>

<section id="GUID-10327A77-B899-4F7F-9F12-094855387BAB"><title>Saving location

information on a mobile device</title>

<p>To store location information on your mobile device:</p>

<ol>

<li id="GUID-820AF19E-FD11-46E6-A865-6CFF62AD5508"><p>Make use of

the methods of the Landmarks API when constructing

your application.</p>

<itemgroup>

<p>The <xref href="jar:GUID-759FBC7F-5384-4487-8457-A8D4B76F6AA6.jar!/html/classCPosLandmarkDatabase.html" format="application/java-archive"><codeph>CPosLandmarkDatabase</codeph></xref> class is used for accessing the database with the landmarks

information and the <xref href="jar:GUID-759FBC7F-5384-4487-8457-A8D4B76F6AA6.jar!/html/classCPosLandmark.html" format="application/java-archive"><codeph>CPosLandmark</codeph></xref> class

contains the location information.</p>

<p>For detailed information on how to do this, see:</p>

<ul>

<li><p>Using landmarks database for

a discussion of how to start accessing the database with the location information,

including a structure diagram.</p></li>

<li><p>Managing landmarks for

code samples of opening, editing, and adding location information to a database</p>

</li>

<li><p>Listening to database events for

possible events type passed to your application and code samples for implementing

a listener</p>

<itemgroup>

<p>The TPosLmEvent class

is used in listening for events.</p>

</itemgroup>

</li>

</ul>

</itemgroup>

</li>

<li id="GUID-8B69F55D-48B1-469B-83CA-31F0353DCBF0"><p>Make sure <codeph>eposlandmarks.lib</codeph> is

accessible to your linker when compiling your application by including it

in your .mmp file or by editing the project properties in your IDE, depending

on your build environment.</p></li>

<li id="GUID-09A43DDB-5BA1-470D-B5A3-5084D2BA124A"><p>Make sure

you have the correct capabilities information set for your application, depending

on your application you may need <codeph>LocalServices</codeph>, <codeph>NetworkServices</codeph>, <codeph>ReadDeviceData</codeph>, <codeph>ReadUserData</codeph>, <codeph>WriteDeviceData</codeph>, and <codeph>WriteUserData</codeph>.</p>

</li>

</ol>

</section>

<section id="GUID-8D41C21E-0334-4679-B4D2-709B96C34076"><title>Additional information

on storing location information</title>

<p>For more information see, <draft-comment time="2007-10-01T13:49">Question

for the reviewers: Is there anything else that we could add here?</draft-comment></p>

<ul>

<li><p>API description for a description

of the API and its class structure</p></li>

<li><p>Using the Landmarks API for a

general overview on how to create applications using the API</p></li>

<li><p>For a reference example on searching and manipulating the

information in the location database, see <codeph>LocationLandmarksRefAppForS60</codeph> in

the SDK (<codeph>&lt;SDK installation directory&gt;\S60CppExamples\</codeph>)</p>

</li>

<li><p>For a reference example on how to use common UI components

to work with landmark data, see <codeph>LocationLandmarksUIRefApp</codeph> in

the SDK (<codeph>&lt;SDK installation directory&gt;\S60CppExamples\AutoAdaptedToTouchEx\</codeph>)</p>

</li>

</ul>

</section>

<section id="GUID-987E85BE-B14B-4248-853F-F7BC5EF48BE7"><title>Related Symbian

APIs</title>

<p>The Symbian platform also offers the following related

APIs:</p>

<ul>

<li><p>Landmarks API for accessing

the database</p></li>

<li><p>Landmarks Database

Management API for creating and deleting databases</p></li>

<li><p>Landmarks Search API for

allowing mobile devices users to search the database</p></li>

<li><p>Landmarks UI Add/Edit API for

allowing mobile device users to add and edit landmarks</p></li>

<li><p>Landmarks UI Selector API for

displaying and selecting landmarks</p></li>

<li><p>Location Acquisition API for

finding the location of a mobile device</p></li>

<li><p><xref href="GUID-02EE9C85-5942-40F7-BF60-B5D8B04B9AA6.dita#GUID-02EE9C85-5942-40F7-BF60-B5D8B04B9AA6/GUID-15C32932-3088-4FC9-BE83-2EC00FCEB694">Communication</xref> for

sending location information to other devices</p></li>

</ul>

</section>

</conbody></concept>