A Map component in an app. This fragment is the simplest way to place a map in an application. It's a wrapper around a view of a map to automatically handle the necessary life cycle needs. Being a fragment, this component can be added to an activity's layout file simply with the XML below.
<fragment
class="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
GoogleMap
must be
acquired using getMapAsync(OnMapReadyCallback)
. This class automatically initializes the maps
system and the view. A view can be removed when the SupportMapFragment's onDestroyView()
method is called and the GoogleMapOptions.useViewLifecycleInFragment(boolean)
option is set. When this
happens the SupportMapFragment is no longer valid until the view is recreated again later
when the SupportMapFragment's onCreateView(LayoutInflater, ViewGroup, Bundle)
method is called.
Any objects obtained from the GoogleMap
are
associated with the view. It's important to not hold on to objects (e.g. Marker
) beyond
the view's life. Otherwise it will cause a memory leak as the view cannot be released.
To use this class, you must include the Android support library in your build path.
Developer Guide
For more information, read the Google Maps SDK for Android developer guide.
Inherited Field Summary
Public Constructor Summary
Public Method Summary
| void | |
| static SupportMapFragment | |
| static SupportMapFragment | |
| void | |
| void | |
| void | |
| View | |
| void | onDestroy
()
|
| void | |
| final void | onEnterAmbient
( Bundle
ambientDetails)
You must call this method from the parent WearableActivity's corresponding
method.
|
| final void | |
| void | onInflate
( Activity
activity, AttributeSet
attrs, Bundle
savedInstanceState)
Parse attributes during inflation from a view hierarchy into the arguments we
handle.
|
| void | onLowMemory
()
|
| void | onPause
()
|
| void | onResume
()
|
| void | |
| void | onStart
()
|
| void | onStop
()
|
| void |
Inherited Method Summary
Public Constructors
public SupportMapFragment ()
Creates a map fragment. This constructor is public only for use by an inflater. Use newInstance()
to create a SupportMapFragment programmatically.
Public Methods
public void getMapAsync ( OnMapReadyCallback callback)
Sets a callback object which will be triggered when the GoogleMap
instance is ready to be used.
Note that:
- This method must be called from the main thread.
- The callback will be executed in the main thread.
- In the case where Google Play services is not installed on the user's device, the callback will not be triggered until the user installs it.
- In the rare case where the GoogleMap is destroyed immediately after creation, the callback is not triggered.
- The
GoogleMapobject provided by the callback is non-null.
Parameters
null
.public static SupportMapFragment newInstance ( GoogleMapOptions options)
Creates a map fragment with the given options.
Parameters
public static SupportMapFragment newInstance ()
Creates a map fragment, using default options.
public void onActivityCreated ( Bundle savedInstanceState)
public void onAttach ( Activity activity)
public void onCreate ( Bundle savedInstanceState)
public View onCreateView ( LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
public void onDestroy ()
public void onDestroyView ()
public final void onEnterAmbient ( Bundle ambientDetails)
You must call this method from the parent WearableActivity's corresponding method.
public final void onExitAmbient ()
You must call this method from the parent WearableActivity's corresponding method.
public void onInflate ( Activity activity, AttributeSet attrs, Bundle savedInstanceState)
Parse attributes during inflation from a view hierarchy into the arguments we handle.
public void onLowMemory ()
public void onPause ()
public void onResume ()
public void onSaveInstanceState ( Bundle outState)
Provides a Bundle
to store
the state of the Fragment before it gets destroyed. It can later be retrieved when onCreate(Bundle)
is called again.
