What Are The Drone Anti-jamming Systems Technology?
Day 13: Google Maps Android API V2 Part 2
1. Android Application Development
Google Maps API V2 Part 2
● MapFragment Class
● GoogleMap Class
Ahsanul Karim
karim.ahsanul@gmail.com
http://droidtraining.wordpress.com
2. Google Maps API V2 The Map Object
The key class is the GoogleMap class.
GoogleMap handles the following
operations automatically:
1. Connecting to the Google Maps
service.
2. Downloading map tiles.
3. Displaying tiles on the device screen.
4. Displaying various controls such as
pan and zoom.
5. Responding to pan and zoom
gestures by moving the map and
zooming in or out.
3. Google Maps API V2 MapFragment
1. MapFragment, a subclass of the Android Fragment class,
allows to place a map in an Android Fragment. MapFragment
objects act as containers for the map, and provide access to the
GoogleMap object.
2. The Google Maps Android API requires API level 12 or higher
for the support of MapFragment objects. If you are targeting an
application earlier than API level 12, you can access the same
functionality through the SupportMapFragment class. You will
also have to include the Android Support Library.
[We'll check this later]
4. Google Maps API V2 Add a Map to App
The basic steps for adding a map are:
1. Follow the steps in from Part 1 to get the API key and add the
required attributes to your Android Manifest. [Part 1]
2. Add a Fragment object to the Activity. We added a <fragment>
element to the layout file for the Activity. [Part 1]
3. In the Activity's onCreate() method, get the GoogleMap object in the
MapFragment. We can set view options for a map object.
4. The last step is to add permissions and other settings to your
application's manifest, AndroidManifest.xml.
Once we've followed these steps, we can set the initial options for the
GoogleMap object. The MapFragment automatically displays the map
at the completion of the onCreate() method.
5. Add a Map to App
Google Maps API V2 Add a Fragment [1]
To define a Fragment object in an Activity's layout file, add a <fragment>
element. In this element, set the android:name attribute to"com.google.
android.gms.maps.MapFragment". This automatically attaches a
MapFragment to the Activity. [Part 1]
6. Add a Map to App
Google Maps API V2 Add a Fragment [2]
We can also add a MapFragment to an Activity in code. To do this, create
a new MapFragment instance, and then call FragmentTransaction.add() to
add the Fragment to the current Activity.
For now we are considering
minSDKVersion="12"
7. Add a Map to App
Google Maps API V2 Add a Fragment [3]
Getting GoogleMap object:
If MapFragment is included in layout (activity_main.xml):
With the handle to the GoogleMap object for the MapFragment, we
can set initial options for the map.
8. Add a Map to App
Google Maps API V2 Add a Fragment [3]
Verify Map Availability:
Before interacting with GoogleMap object, confirm map availability and
Google Play services components are correctly installed on the device.
9. Add a Map to App
Google Maps API V2 Map Types [1]
1. Normal: Typical road map. Roads, some man-made features, and important
natural features such as rivers are shown. Road and feature labels are also
visible.
2. Hybrid: Satellite photograph data with road maps added. Road and feature
labels are also visible.
3. Satellite: Satellite photograph data. Road and feature labels are not visible.
4. Terrain: Topographic data. The map includes colors, contour lines and labels,
and perspective shading. Some roads and labels are also visible.
5. None: No tiles. The map will be rendered as an empty grid with no tiles
loaded.
10. Add a Map to App
Google Maps API V2 Map Types [2]
Normal Hybrid Terrain
11. Add a Map to App
Google Maps API V2 Set Properties Programmatically
GoogleMapOptions object can be used
● If using a MapFragment, use the MapFragment.newInstance
(GoogleMapOptions options) static factory method to construct the fragment
and pass in your custom configured options.
● If you are using a MapView, use the MapView(Context, GoogleMapOptions)
constructor and pass in your custom configured options.
12. Add a Map to App
Google Maps API V2 Set Properties in XML Attributes
