1. Android and Location June 18, 2009 – Open Source Bridge Don Park

2. Don Park @donpdonp

3. Don Park

4. Don Park

5. Don Park

6. Overview The Android Market Development/Location API Apps and Games Opportunities

7. The Android Market

9. AdMob Mobile Browser Traffic "We found that Android traffic in the US grew an average of 47% per month since it launched five months ago while iPhone traffic in the US grew an average of 88% per month in the five months following the launch of their App Store."

13. Top Paid Apps March 2009 SnapPhoto pro (about #140) $0.99, 1,000-5,000 download count category $1000-$5000 Hello IM! AOL/AIM (about #200) $9.99 1,000-5,000 download count category $10,000-$50,000 dxTop Home Screen replacement (about #300) $3.99. 1,000-5,000 download category $4000-$20,000 Power Manager (about #400) $0.99. 500-1,000 download category $500-$1000

16. 0.5 sales/day

18. Intents

19. Services

20. ContentProvider

21. Application Composition An Application is made up of activities List Selection Camera Operation Flickr upload

22. public class Radar extends MapActivity implements ServiceConnection, Constants { public void onCreate(Bundle savedInstanceState) { setTitle(getString(R.string.app_name) + " v" + ICECONDOR_VERSION); Location fix = pigeon.getLastFix(); Log.i(appTag, "pigeon says last fix is " + fix); mapController.animateTo(new GeoPoint((int) (fix.getLatitude() * 1000000), (int) (fix.getLongitude() * 1000000))); } }

23. Activity Lifecycle

26. public class Pigeon extends Service implements Constants, LocationListener, SharedPreferences.OnSharedPreferenceChangeListener { LocationManager locationManager; public void onCreate() { locationManager = (LocationManager) getSystemService(LOCATION_SERVICE); last_local_fix = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER); } }

28. Not used much yet.

29. Camera Activity

30. Intent i = new Intent(); i.setAction(VIEW_ACTION); i.setData(new ContentURI(“http://icecondor.com”)); startActivity(i); <intent-filter . . . > <data android:type=&quot;video/mpeg&quot; android:scheme=&quot;http&quot; . . . /> <data android:type=&quot;audio/mpeg&quot; android:scheme=&quot;http&quot; . . . /> . . . </intent-filter>

31. Content Provider Described by a RESTful URL content://com.example.codelab.transporationprovider query() insert() update() delete()

32. Location API

34. Last known location

35. Request updates at a given frequency

36. GPS basics unavailable – is there a lock/signal? (until cupcake)

37. Timeline 8:00:00 set GPS reporting frequency to 2 minutes 8:01:30 GPS powered on by android 8:02:15 GPS FIX accuracy 1200m 8:02:18 GPS FIX accuracy 700m 8:02:21 GPS FIX accuracy 300m 8:02:21 GPS FIX accuracy 100m 8:02:22 GPS FIX accuracy 80m 8:02:23 GPS FIX accuracy 95m 8:02:40 GPS FIX accuracy 82m

38. Location manager update frequency set to: Every 3 minutes = 10 hours of run time Every 10 minutes = 12 hours of run time Turned off = 24 hours of run time GPS drains the battery

39. Cupcake Location Changes Android 1.5 Location Manager GpsStatus.getSattelites() GpsStatus.Listener.onGpsStatusChange()

40. Apps and Games

41. IceCondor

43. OAUTH push to server

45. shizzow, upcoming.org

46. feed management

47. Radar

53. First sale Feb 22

56. Parallel Kingdom

58. Opportunities

59. There are now over 1,900 location apps at the iPhone store , says Skyhook Wireless . It’s about a 25 / 75 split between free and paid apps.

64. Unknown update frequency

66. Google-scale implementation

67. Latitude API http://www.google.com/latitude/apps/badge/api?user=5189588060747846772&type=json { &quot;type&quot;: &quot;FeatureCollection&quot;, &quot;features&quot;: [ { &quot;type&quot;: &quot;Feature&quot;, &quot;geometry&quot;: {&quot;type&quot;: &quot;Point&quot;, &quot;coordinates&quot;: [-118.44967, 33.988717]}, &quot;properties&quot;: { &quot;id&quot;: &quot;5189588060747846772&quot;, &quot;accuracyInMeters&quot;: 1888, &quot;timeStamp&quot;: 1244864014, &quot;reverseGeocode&quot;: &quot;Los Angeles, CA, USA&quot;, &quot;photoUrl&quot;: &quot;http://www.google.com/latitude/apps/badge/api?type=photo&photo=FnLJ1yEBAAA.uZB0qF11JdzXqsnWsulMJQ.K28fiRafHVJpP8N9U2nhDQ&quot;, &quot;photoWidth&quot;: 96, &quot;photoHeight&quot;: 96, &quot;placardUrl&quot;: &quot;http://www.google.com/latitude/apps/badge/api?type=photo_placard&photo=FnLJ1yEBAAA.uZB0qF11JdzXqsnWsulMJQ.K28fiRafHVJpP8N9U2nhDQ&moving=false&stale=false&lod=1&format=png&quot;, &quot;placardWidth&quot;: 56, &quot;placardHeight&quot;: 59 } } ] }

68. The Google Maps Data API The data model is based on maps and features API and PHP Library Google-scale storage and retrieval http://googlegeodevelopers.blogspot.com/2009/05/introducing-google-maps-data-api-in.html

69. Conclusion Android is well suited for continuous location apps. The Android Market has 4,000 apps for 1,000,000 phones. Google has done a lot of the work in acquiring and storing location. Location apps are fun!