1. Android Application Development
Google Maps API V2 Part 1
Ahsanul Karim
karim.ahsanul@gmail.com
http://droidtraining.wordpress.com

2. Google Maps API V2
Steps
● Download and configure the Google Play services
SDK. The Google Maps Android API is distributed as
part of this SDK.
● Obtain an API key. To do this, you will need to register
a project in the Google APIs Console, and get a
signing certificate for your app.
● Specify settings in the Application Manifest.
● Add a map to a new or existing Android project.
● Publish your application

3. Google Maps API V2
Google Play Services [1]
First need to install the Google Play services SDK using SDK Manager
1. Launch the SDK Manager
2. Select Extras > Google Play services, and install it

4. Google Maps API V2 Google Play Services [2]
The Google Play services SDK is saved in your Android SDK environment
at <android-sdk-folder>/extras/google/google_play_services/

5. Google Maps API V2 Google Play Services [3]
3. import the library project into your workspace. Click File > Import,
select Android > Existing Android Code into Workspace, and browse to the
copy of the library project [libproject] to import it.

6. Google Maps API V2 Google Play Services [4]
Select and Import project.

7. Google Maps API V2 Google Play Services [5]
Project is imported as Library as seen in Project Properties

8. Google Maps API V2 Google Play Services [6]
4. Create a new project to integrate Maps

9. Google Maps API V2 Google Play Services [7]
5. Go to project properties of Google maps V2 Demo and reference
the google-play-services_lib project.

10. Google Maps API V2 Android Manifest [1]
Now we are going to prepare the AndroidManifest.xml file of
Google Maps V2 Demo project:
1. In AndroidManifest.xml, add the following element as a child of
the <application> element, by inserting it just before the closing
tag</application>
Specifying Map
API_KEY in metadata
makes it available to
any MapFragment
used in the project.
We'll create our own
API_KEY a bit later.

11. Google Maps API V2 Android Manifest [2]
2. Add the following elements to your manifest. Replace com.
smartapps.googlemapsv2.demo with the package name of your
application.
3. Save AndroidManifest.xml and rebuild your application.

12. Google Maps API V2 Android Manifest [3]
4. Add following permissions in AndroidManifest.xml
5. Because version 2 of the Google Maps Android API requires OpenGL
ES version 2, you must add a <uses-feature> element as a child of the
<manifest> element in AndroidManifest.xml

13. Google Maps API V2
Obtaining Maps API KEY [1]
1. To access the Google Maps servers with the Maps API, we have to
add a Maps API key to our application.
2. The key is free, we can use it with any of our applications that call
the Maps API, and it supports an unlimited number of users.
3. We'll obtain a Maps API key from the Google APIs Console by
providing your application's signing certificate and its package name.
So there will be separate Maps API key for debug keystore and release
keystore.
4. Once we have the key, we add it to our application by adding an
element to AndroidManifest.xml.
5. Recommended practice is to sign each of our applications with a
different certificate and get a different key for each one.

14. Google Maps API V2
Obtaining Maps API KEY [2]
Steps for obtaining an API key :
1. Retrieve information about the application's certificate.
2. Register a project in the Google APIs Console and add the
Maps API as a service for the project.
3. Once we have a project set up, we can request one or more
keys.
4. Finally, we can add the key to our application and begin
development.
These steps will be described in next slides...

15. Google Maps API V2
Obtaining Maps API KEY [3]
Step 1: Certificate Info & SHA1 Fingerprint
a. Locate Keystore: Go to Preferences-> Android-> Build
By default: Path to debug.keystore
OS X and Linux: ~/.android/
Windows Vista and Windows 7: C:Usersyour_user_name.android

16. Google Maps API V2
Obtaining Maps API KEY [4]
Step 1: Certificate Info & SHA1 Fingerprint
b. Get SHA1 Fingerprint:
Open Terminal/Cmd Prompt and write following command to get SHA1 Fingerprint:
In OSX/Linux:
keytool -list -v -keystore ~/.android/debug.keystore -alias androiddebugkey -
storepass android -keypass android
In Windows Vista/Windows 7:
keytool -list -v -keystore "C:Usersyour_user_name.androiddebug.keystore" -
alias androiddebugkey -storepass android -keypass android
1. Be careful about the path of debug.keystore in command.
2. In windows, if environment variable is not set, you may need to
write the command after going to java/bin folder with keytool.exe.

17. Google Maps API V2
Obtaining Maps API KEY [4]
Step 1: Certificate Info & SHA1 Fingerprint
b. Get SHA1 Fingerprint: Output in Terminal

18. Google Maps API V2
Obtaining Maps API KEY [5]
Step 2: Creating an API Project
1. In browser, navigate to Google API Concole [https://code.google.
com/apis/console/] and Login with Gmail ID.
2. Create New Project and Enable Google Maps Android API V2 Service from
services list.

19. Google Maps API V2
Obtaining Maps API KEY [6]
Step 2: Request for API Key
It's possible to register more than one key per project.
To get the key:
1. In the left navigation bar, click API Access.
2. In the resulting page, click Create New Android Key....
3. In the resulting dialog, enter the SHA-1 fingerprint, then a semicolon, then our
application's package name. For example: in our case
1E:36:29:E1:F4:DD:FB:5C:AF:8B:99:BA:FC:E7:A5:03:51:14:19:B65;com.smartapps.
googlemapsv2.demo
4. API Console responds with a 40-character key:
AIzaSyCQL_pZ_EA85MzBEeNDxNCtlQnt3-V_OGU

20. Google Maps API V2
Obtaining Maps API KEY [6]
Step 2: Request for API Key

21. Google Maps API V2
Add a Map [1]
Step 1: Add a MapFragment to activity_main.xml
Step 2: MainActivity.java

22. Google Maps API V2
Add a Map [2]
Step 3: Build and Run
1. Now we should see the map in a real device
2. Map cannot be shown in emulator as long as Google Play Store application is
not installed in emulator