ANDROID MOBILE APPLICATION
ON GOOGLE MAPS
- Sutej Chakka
• Main objective is about getting updates on our current
location using android application
• Pinpointing the location
• Getting the exact address along with the latitudes and
longitudes of the location
• Getting street view and satellite view of the
Obtaining Google maps API key:
To access the Google Maps servers with the
Maps API, you have to add a Maps API key to our
application. The key is free, you can use it with any of
our applications that call the Maps API.
Installing Google maps on our
• You obtain a Maps API key from the Google APIs
Console by providing your application's signing
certificate and its package name.
• Once you have the key, you add it to your application
by adding an element to your application's manifest
Debug certificate: The Android SDK tools generate
this certificate automatically when you do a "debug"
build from the command line,
The certificate is only for use with an application that
you're testing; you can't publish an app that's signed
with a debug certificate.
You can generate an API key from this certificate, but
only use the key for testing, never for production.
Some of the important functions used in java file are:
SetContentView: This is the method used to connect
XML file to JAVA file.
FindViewById: This is the method used to access
button created in XML file in java file.
OnClickListener: to give action to the button.
INTENT: this is used to start another activity.
GeoPoint: A class representing a pair of latitude and
longitude, stored as integer numbers of microdegrees.
MapView: A View which displays a map (with data
obtained from the Google Maps service). It will capture
keypresses and touch gestures to pan and zoom the map.
It can also be controlled programmatically (getController
()) and can draw a number of Overlays on top of the map
(getOverlays ()).In order to display Google Maps data in a
MapView; you must register with the Google Maps service
and obtain a Maps API Key.
MyLocationOverlay: An Overlay for drawing the user's
current location (and accuracy) on the map.
MapController: A utility class to manage panning and
zooming of a map.
For Updating location:
onUpdates (String provider, long minTime, float
minDistance, LocationListener listener)
* provider: the name of the provider with
which to register
minTime: minimum time interval between location
updates, in milliseconds
minDistance: minimum distance between location
updates, in meters
Navigation of our application:
Press the map more than 3 sec we will see three
Place a pin point: it marks the current location
Toggle view: it changes street view to satellite view
and vice versa.
Get address: it shows the address of the current
For our project we need to take several
permissions to make sure our application works fine.
Running this application in normal AVD emulator
wont work we have to select the target device as
Emulator used to run this application
Android applications run in a sandbox, an
isolated area of the system that does not have access to
the rest of the system's resources. The Android
Application Sandbox, which isolates your app data and
code execution from other apps.
Release certificate: The Android SDK tools generate
this certificate when you do a "release" build with
either any program or Eclipse.
This certificate can be used with an app you release to