Google Maps API V2 Tutorial, Steps to get Maps in Android

Create New project and Do this 3 setps for getting Google Maps

1) Download & Configure Google Play Services.

2) Get Google Maps API V2 key.

3) Your Project add some additional code.

1) Download & Configure Google Play Services:

If you want to develop Google Maps Application you must download "Google Play Services" library and configure to work with your existing Android SDK.

Download:

Window => Android SDK Manager => Extras => Click Google Play Services => click Download.

Import to Workspace:

File => Import => Android => Existing Code into Workspaces

then browse to the location of the downloaded "Google Play Sevices" package on your computer.

Open your ADT Bundle=>

sdk/extras/google/google_play_services/libproject/google_play_services_lib

click ok => click finish button.

Add Project:

right click on your project => properties => android => In Library pane click Add button => select google_play_services => click apply =>click OK button.

Add Support Library:

right click on your project => Anroid Tools => click Add Support Library.

2) Get Google Maps API V2 key:

If you want to get Google Maps API V2 key we need System SHA1 key.

Get SHA1 Key:

Open Command Prompt, paste your "your_user_name" into below Command and Run.

keytool -list -v -keystore "C:\Documents and Settings\your_user_name\.android\debug.keystore" -alias androiddebugkey -storepass android -keypass android

Then u get SHA1 Key

Get Google Maps API V2 Key:

Open Google API Console (code.google.com/apis/console)

i)click services and activate "Google Maps API V2"

ii)click API Access pane click "create new Android key" and give your_SHA1_key;your_project_package_name

( Goto your manifest.xml and take package ex: package="your_project_pcakge_name")

Then click create button, Google Maps API V2 key will be generated.

3) In Your Project add some additional code

i)In your manifest.xml:

We need some permissions, feature and Meta Tag

Meta Tag:

Add this meta tag in your before closing </application> tag in manifest.

<meta-data

android:name="com.google.android.maps.v2.API_KEY"

android:value="Write_ur_Google_Maps_API_Key" />

Note: Write your Google Maps API key in meta tag ( previous step you got key)

Permissions:

    <permission

        android:name="replace_ur_package_name.permission.MAPS_RECEIVE"

        android:protectionLevel="signature" />

<uses-permission android:name="replace_ur_package_name.permission.MAPS_RECEIVE"/>

Also add these permissons:

<uses-permission android:name="android.permission.INTERNET" />

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>

<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>

Feature:

Add this feature

<uses-feature

android:glEsVersion="0x00020000"

android:required="true" />

ii)In your layout activity_main.xml file:

Add this code

<fragment

android:id="@+id/map"

android:name="com.google.android.gms.maps.SupportMapFragment"

android:layout_width="match_parent"

android:layout_height="match_parent" />

Here i use SupportMapFragement because its support All versions

iii) Your Class Must extends with FragmentActivity and add this code also

SupportMapFragment smf = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);

GoogleMap map = smf.getMap();

Run Your Project into device you got a Map like this way

 

Show Current Location:

// enable current location

map.setMyLocationEnabled(true);

Add Marker:

double lati = 17.388321, longi = 78.487869;

       LatLng position = new LatLng(lati, longi);

// Add marker to map

Marker marker = map.addMarker(new MarkerOptions()

                  .title("Hyderabad")

                  .icon(BitmapDescriptorFactory

                       .defaultMarker(BitmapDescriptorFactory.HUE_AZURE))

                  .position(position));

Move to Marker position:

// move camera to position

map.moveCamera(CameraUpdateFactory.newLatLng(position));

Zoom Marker position:

// zoom controls

map.moveCamera(CameraUpdateFactory.newLatLngZoom(position, 10));

Add Listener for Marker:

// add listener for marker

map.setOnMarkerClickListener(new OnMarkerClickListener(){

@Override

public boolean onMarkerClick(Marker marker) {

            Toast.makeText(ctx, "U clicked Markar", 3000).show();

            Intent it = new Intent(Intent.ACTION_VIEW);

            it.setData(Uri.parse("http://venkoolit.blogspot.com"));

            startActivity(it);

            return false;

            }

       });

Add Polyline:

map.addPolyline(new PolylineOptions().add(

       new LatLng(17.498211000000000000, 78.409864799999920000),

       new LatLng(17.346480600000000000, 78.550958300000050000))

       .geodesic(true));

Show Traffic:

// enable trafic

map.setTrafficEnabled(true);

Change Map Type:

// set map type satellite

map.setMapType(map.MAP_TYPE_SATELLITE);

Google Maps Demo Click Here

Then you got a Map like this way