java - google - android MapView en Fragment

mapview android example

Question

Quiero tener MapView dentro de mi Fragment

Este es mi archivo FragmentLayout xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#17df0d"
android:orientation="vertical" >
<com.google.android.gms.maps.MapView
android:id="@+id/mapview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="@+id/textView1"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_marginBottom="70dp" >
</com.google.android.gms.maps.MapView>
</RelativeLayout>

Mi archivo AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="a.b.c.d"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="11"
android:targetSdkVersion="17" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="your_api_key" />
<meta-data
android:name="com.google.android.gms.version"
android:value="@integer/google_play_services_version" />
</application>
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.INTERNET" />
<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" />
<permission
android:name="a.b.c.d.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
<uses-permission android:name="a.b.c.d.permission.MAPS_RECEIVE" />
<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" />
</manifest>

y mi clase Fragmento

public class ReportFragment extends Fragment implements LocationListener {
MapView mapView = null; //eventually it is being read from view and assigned

cuando abro la aplicación, no veo ninguna vista de mapa en mi Fragmento

Answer 1

Agregando a la respuesta de MD:

De la documentation :

Un GoogleMap se debe adquirir usando getMapAsync (OnMapReadyCallback). MapView inicializa automáticamente el sistema de mapas y la vista.

De acuerdo con esto, la forma más correcta de inicializar GoogleMap es usando getMapAsync .

Tenga en cuenta que su clase tiene que implementar OnMapReadyCallback

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment_map_page, container, false);
mMapView = (MapView) v.findViewById(R.id.map_view);
mMapView.onCreate(savedInstanceState);
mMapView.getMapAsync(this); //this is important
return v;
}
@Override
public void onMapReady(GoogleMap googleMap) {
mGoogleMap = googleMap;
mGoogleMap.getUiSettings().setZoomControlsEnabled(true);
mGoogleMap.addMarker(new MarkerOptions().position(/*some location*/));
mGoogleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(/*some location*/, 10));
}
@Override
public void onResume() {
super.onResume();
mMapView.onResume();
}
@Override
public void onPause() {
super.onPause();
mMapView.onPause();
}
@Override
public void onDestroy() {
super.onDestroy();
mMapView.onDestroy();
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
mMapView.onSaveInstanceState(outState);
}
@Override
public void onLowMemory() {
super.onLowMemory();
mMapView.onLowMemory();
}

Answer 2

Del ejemplo de Josh Holtz en GitHub :

Debería agregar MapView en su Layout como

 <com.google.android.gms.maps.MapView
android:id="@+id/mapview"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />

e implementa tu Fragment como

public class SomeFragment extends Fragment {
MapView mapView;
GoogleMap map;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.some_layout, container, false);
// Gets the MapView from the XML layout and creates it
mapView = (MapView) v.findViewById(R.id.mapview);
mapView.onCreate(savedInstanceState);
// Gets to GoogleMap from the MapView and does initialization stuff
map = mapView.getMap();
map.getUiSettings().setMyLocationButtonEnabled(false);
map.setMyLocationEnabled(true);
// Needs to call MapsInitializer before doing any CameraUpdateFactory calls
try {
MapsInitializer.initialize(this.getActivity());
} catch (GooglePlayServicesNotAvailableException e) {
e.printStackTrace();
}
// Updates the location and zoom of the MapView
CameraUpdate cameraUpdate = CameraUpdateFactory.newLatLngZoom(new LatLng(43.1, -87.9), 10);
map.animateCamera(cameraUpdate);
return v;
}
@Override
public void onResume() {
mapView.onResume();
super.onResume();
}
@Override
public void onDestroy() {
super.onDestroy();
mapView.onDestroy();
}
@Override
public void onLowMemory() {
super.onLowMemory();
mapView.onLowMemory();
}
}

Answer 3

En caso de que alguien esté buscando una versión de Kotlin de MapView Fragment;)

class MapViewKotlinFragment : Fragment(), OnMapReadyCallback {
private var mMap: MapView? = null
override fun onSaveInstanceState(outState: Bundle?) {
super.onSaveInstanceState(outState)
mMap?.onSaveInstanceState(outState)
}
override fun onCreateView(inflater: LayoutInflater?, container: ViewGroup?, savedInstanceState: Bundle?): View? {
val view = inflater?.inflate(R.layout.fragment_map, container, false)
mMap = view?.findViewById(R.id.mapViewPlaces) as MapView
mMap?.onCreate(savedInstanceState)
mMap?.getMapAsync(this)
return view
}
override fun onResume() {
super.onResume()
mMap?.onResume()
}
override fun onPause() {
super.onPause()
mMap?.onPause()
}
override fun onStart() {
super.onStart()
mMap?.onStart()
}
override fun onStop() {
super.onStop()
mMap?.onStop()
}
override fun onDestroy() {
super.onDestroy()
mMap?.onDestroy()
}
override fun onLowMemory() {
super.onLowMemory()
mMap?.onLowMemory()
}
override fun onMapReady(googleMap: GoogleMap) {
googleMap.addMarker(MarkerOptions().position(LatLng(0.0, 0.0)).title("Marker"))
}