Building Location-Aware Apps with Open Source & Open Data Chuck Greb | 9·21·2014 | Droidcon NYC
Building Location-Aware Apps with Open Source & Open Data
May 27, 2015
A map can show you where you are or how to get from here to there. But in a world of location aware devices maps can do so much more. Maps and location-based features are the foundation for many apps and provide a rich contextual experience that transforms based on your environment. Open source location services and map frameworks can give you greater transparency, flexibility, compatibility, and control when building location-based apps. This talk will explore how to implement maps and other location-aware features on Android using open source and open data.
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Building Location-Aware Appswith Open Source & Open Data
Chuck Greb | 9·21·2014 | Droidcon NYC
start where you are
start where you are
Building Location-Aware Appswith Open Source & Open Data
Building Location-Aware Appswith Open Source & Open Data
3 kinds of location-aware apps
⇢ Map applications
⇢ Location based apps
⇢ Apps with location aware features
Location-Aware Apps
Building Location-Aware Appswith Open Source & Open Data
Philosophy
Open Source
Code
Open Source
License
Open Source
Community
Open Source
Advantages
⇢ Transparency
⇢ Flexibility
⇢ Compatibility
⇢ Free!
Open Source
Open source is not free like beer
Open Source
Open source is free like a puppy
Open Source
Building Location-Aware Appswith Open Source & Open Data
Availability & Access
Open Data
Reuse & Redistribution
Open Data
Universal participation
Open Data
Building Location-Aware Appswith Open Source & Open Data
Components
Open Location Applications
Datasource
Open Location Applications
Vector Tiles
Open Location Applications
Renderer
Open Location Applications
Location Services
Open Location Applications
GPS, Network, Sensors, BLE
Geocoder
Open Location Applications
Search Engine
Open Location Applications
Route Engine
Open Location Applications
OpenStreetMap (OSM)
⇢ Crowdsourced Data
⬝ Local knowledge
⬝ Community driven
⇢ Public Data
⬝ 2007 TIGER import
⬝ Manual import process
⇢ Open Data Commons Open Database License (ODbL)
⬝ Attribution
⬝ Share-Alike
⬝ Keep Open
OpenStreetMap (OSM)
osmdroid
2008
osmdroid
Based on Google Maps API v1
osmdroid
Support for online and offline tile source
osmdroid
Icons, tracking, and shapes
osmdroid
Mapbox
Fork of osmdroid
Mapbox
Easy integration with Mapbox tile server
Mapbox
<com.mapbox.mapboxsdk.views.MapView
android:id="@+id/mapview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
mapbox:mapid="Your Mapbox mapid" />
Mapbox
MapView mapView = new MapView(this, "Your Mapbox mapid");
this.setContentView(mapView);
Mapbox
(Alternate tile servers also supported)
Mapbox
Custom styles & satellite imagery
Mapbox
OpenScienceMap
Universität Bremen
OpenScienceMap
“OpenScienceMap provides free and open maps for Android with the fastest and 100% pure vector maps around.”
OpenScienceMap
<org.oscim.android.MapView
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent" />
OpenScienceMap
public class MyActivity extends MapActivity {
...
public Map getMap() {
return super.map();
}
}
OpenScienceMap
@Override public void onCreate(Bundle icicle) {
super.onCreate(icicle);
UrlTileSource tileSource = new OSciMap4TileSource("http://vector.example.com/all");
VectorTileLayer baseLayer = getMap().setBaseMap(tileSource);
getMap().layers().add(new BuildingLayer(getMap(), baseLayer));
getMap().layers().add(new PoiLayer(getMap(), baseLayer));
getMap().layers().add(new LabelLayer(getMap(), baseLayer));
baseLayer.setRenderTheme(ThemeLoader.load(
AssetAdapter.g.openFileAsStream("styles/map.xml)")));
}
OpenScienceMap
Mapzen
Pelias
Mapzen
getPelias().suggest("Empire State Build", Callback<Result>);
getPelias().search("Empire State Building", "x1,y1,x2,y2", Callback<Result>);
Mapzen (Pelias)
On the Road
Mapzen
OSRM
Router.getRouter().setEndpoint("http://osrm.example.com")
.setDriving()
.setLocation(new double[]{lat, lng})
.setLocation(new double[]{lat, lng})
.setCallback(new Callback() {
@Override
public void success(Route route) {
// do stuff
}
@Override
public void failure(int statusCode) {
// do stuff
}
}).fetch();
Mapzen (On the Road)
LOSTLocation Open Source TrackerLocation Open Source Tracker
Mapzen
LocationClient locationClient = new LocationClient(context,
new LocationClient.ConnectionCallbacks() {
@Override public void onConnected(Bundle bundle) {
onLocationClientConnected();
}
@Override public void onDisconnected() {
onLocationClientDisconnected();
}
});
Mapzen (LOST)
private void onLocationClientConnected() {
Location lastLocation = locationClient.getLastLocation();
if (lastLocation != null) {
// do stuff
}
LocationRequest locationRequest = LocationRequest.create();
locationRequest.setInterval(5000);
locationClient.requestLocationUpdates(locationRequest,
new LocationListener() {
@Override public void onLocationChanged(Location location) {
// do more stuff
}
});
}
Mapzen (LOST)
Mapzen Android Demo
Mapzen
Mapzen Android Demo
Pelias Android SDK On the Road LOSTOpenScienceMap
VTM Speakerbox
TTSLocationManagerOSRMPeliasVector
Datasource OpenGL ES
start where you are
Ineke!Chuck Greb | @ecgreb
github.com/mapzen
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