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Merge "docs: add dev guide for getting user location" into froyo
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‎docs/html/guide/guide_toc.cs‎

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@@ -220,9 +220,16 @@ localized titles are added in the language order specified below.
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<li><a style="color:gray;">Accelerometer</a></li>
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</ul>
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</li> -->
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<li><a href="<?cs var:toroot ?>guide/topics/location/index.html">
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<span class="en">Location and Maps</span>
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</a></li>
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<li class="toggle-list">
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<div><a href="<?cs var:toroot ?>guide/topics/location/index.html">
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<span class="en">Location and Maps</span>
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</a></div>
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<ul>
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<li><a href="<?cs var:toroot ?>guide/topics/location/obtaining-user-location.html">
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<span class="en">Obtaining User Location</span>
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</a> <span class="new">new!</span></li>
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</ul>
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</li>
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<!--<li class="toggle-list">
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<div><a style="color:gray;">Wireless Controls</a></div>
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<ul>

‎docs/html/guide/topics/location/index.jd‎

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<div id="qv-wrapper">
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<div id="qv">
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<h2>Location and Maps quickview</h2>
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<h2>Quickview</h2>
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<ul>
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<li>Android provides a location framework that your application can use to determine the device's location and bearing and register for updates.</li>
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<li>A Google Maps external library is available that lets you display and manage Maps data.</li>
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<li>Android provides a location framework that your application can use to determine the
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device's location and bearing and register for updates</li>
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<li>A Google Maps external library is available that lets you display and manage Maps data</li>
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</ul>
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<h2>In this document</h2>
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<h2>Topics</h2>
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<ol>
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<li><a href="#location">Location Services</a></li>
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<li><a href="#maps">Google Maps External Library</a></li>
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<li><a href="{@docRoot}guide/topics/location/obtaining-user-location.html">Obtaining User
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Location</a></li>
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</ol>
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<h2>See Also</h2>
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<ol>
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<li><a href="http://code.google.com/android/add-ons/google-apis/index.html">Google APIs add-on download&raquo;</a></li>
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<li><a
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href="http://code.google.com/android/add-ons/google-apis/maps-overview.html">Google
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Maps External Library &raquo;</a></li>
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</ol>
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</div>
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</div>
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<p>Location- and maps-based applications and services are compelling for mobile device users. You can build these capabilities into your applications using the classes of the {@link android.location} package and the Google Maps external library. The sections below provide details. </p>
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<p>Location and maps-based applications are compelling for mobile device users. You
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can build these capabilities into your applications using the classes of the {@link
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android.location} package and the Google Maps external library. The sections below provide details.
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</p>
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<h2 id="location">Location Services</h2>
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<p>Android gives your applications access to the location services supported by
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the device through the classes in the <code>android.location</code> package. The
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the device through the classes in the {@code android.location} package. The
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central component of the location framework is the
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{@link android.location.LocationManager} system service, which provides an API to
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determine location and bearing if the underlying device (if it supports location
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capabilities). </p>
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{@link android.location.LocationManager} system service, which provides APIs to
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determine location and bearing of the underlying device (if available). </p>
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<p>As with other system services, you do not instantiate a LocationManager directly.
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Rather, you request an LocationManager instance from the system by calling
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{@link android.content.Context#getSystemService(String) getSystemService(Context.LOCATION_SERVICE)}.
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The method returns a handle to a new LocationManager instance.</p>
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<p>As with other system services, you do not instantiate a {@link android.location.LocationManager}
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directly. Rather, you request an instance from the system by calling
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{@link android.content.Context#getSystemService(String)
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getSystemService(Context.LOCATION_SERVICE)}. The method returns a handle to a new {@link
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android.location.LocationManager} instance.</p>
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<p>Once your application has a handle to a LocationManager instance, your application
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will be able to do three things:</p>
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<p>Once your application has a {@link android.location.LocationManager}, your application
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is able to do three things:</p>
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<ul>
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<li>Query for the list of all LocationProviders known to the
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LocationManager for its last known location.</li>
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<li>Register/unregister for periodic updates of current location from a
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LocationProvider (specified either by Criteria or name).</li>
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<li>Register/unregister for a given Intent to be fired if the device comes
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within a given proximity (specified by radius in meters) of a given
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lat/long.</li>
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<li>Query for the list of all {@link android.location.LocationProvider}s for the last known
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user location.</li>
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<li>Register/unregister for periodic updates of the user's current location from a
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location provider (specified either by criteria or name).</li>
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<li>Register/unregister for a given {@link android.content.Intent} to be fired if the device
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comes within a given proximity (specified by radius in meters) of a given lat/long.</li>
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</ul>
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<p>However, during initial development in the emulator, you may not have access to real
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data from a real location provider (Network or GPS). In that case, it may be necessary to
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spoof some data for your application using a mock location provider.</p>
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<p class="note"><strong>Note:</strong> If you've used mock LocationProviders in
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previous versions of the SDK, you can no longer provide canned LocationProviders
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in the /system/etc/location directory. These directories will be wiped during boot-up.
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Please follow the new procedures outlined below.</p>
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<h3>Providing Mock Location Data</h3>
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<p>When testing your application on the Android emulator, there are a couple different
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ways to send it some mock location data: you can use the DDMS tool or the "geo" command
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option in the emulator console.</p>
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<h4 id="ddms">Using DDMS</h4>
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<p>With the DDMS tool, you can simulate location data a few different ways:</p>
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<ul>
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<li>Manually send individual longitude/latitude coordinates to the device.</li>
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<li>Use a GPX file describing a route for playback to the device.</li>
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<li>Use a KML file describing individual placemarks for sequenced playback to the device.</li>
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</ul>
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<p>For more information on using DDMS to spoof location data, see the
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<a href="{@docRoot}guide/developing/tools/ddms.html#emulator-control">Using DDMS guide</a>.
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<h4 id="geo">Using the "geo" command in the emulator console</h4>
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<p>Launch your application in the Android emulator and open a terminal/console in
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your SDK's <code>/tools</code> directory. Connect to the emulator console. Now you can use:</p>
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<ul><li><code>geo fix</code> to send a fixed geo-location.
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<p>This command accepts a longitude and latitude in decimal degrees, and
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an optional altitude in meters. For example:</p>
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<pre>geo fix -121.45356 46.51119 4392</pre>
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</li>
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<li><code>geo nmea</code> to send an NMEA 0183 sentence.
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<p>This command accepts a single NMEA sentence of type '$GPGGA' (fix data) or '$GPRMC' (transit data).
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For example:</p>
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<pre>geo nmea $GPRMC,081836,A,3751.65,S,14507.36,E,000.0,360.0,130998,011.3,E*62</pre>
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</li>
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</ul>
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<p>For more information, read the guide to <a
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href="{@docRoot}guide/topics/location/obtaining-user-location.html">Obtaining User
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Location</a>.</p>
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<p>For information about how to connect to the emulator console, see
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<a href="{@docRoot}guide/developing/tools/emulator.html#console">Using the Emulator Console</a>.</p>
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<h2 id="maps">Google Maps External Library</h2>
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<p style="margin-left:2em;"><a
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href="http://code.google.com/android/add-ons/google-apis">http://code.google.com/android/add-ons/google-apis</a></p>
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<p>For your convenience, the Google APIs add-on is also included in the Android
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SDK. <!-- To learn now to use the Maps external library in your application, see
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[[Using External Libraries]].--></p>
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<p>For your convenience, the Google APIs add-on is also available as a downloadable component from
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the Android SDK and AVD Manager (see <a href="{@docRoot}sdk/adding-components.html">Adding SDK
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Components</a>).</p>
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<p class="note"><strong>Note:</strong> In order to display Google Maps data in a
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MapView, you must register with the Google Maps service and obtain a Maps API

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