Android OnCameraChange in Fragment heißt nie

Question

Ich versuche, einen Listener zu setzen, um Kamerafahrten zu fangen, aber es funktioniert nicht. Die Methode onCameraChange, implementiert von dem Fragment, das das SupportMapFragment hostet, wird auch niemals aufgerufen, wenn ich alles richtig eingerichtet habe. This similar question hat mir nicht geholfen.

Hier ist der Code des Fragments:

public class MapFragment extends Fragment implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, 
    OnMapReadyCallback, GoogleMap.OnCameraChangeListener { 
private static final String TAG = MapFragment.class.getSimpleName(); 
private static final int MY_LOCATION_REQUEST_PERMISSION = 100; 
private static final int ENABLE_LOCATION_REQUEST_PERMISSION = 200; 

private int mShortAnimationDuration; 
private ImageButton checkin; 
private LinearLayout big_checkin; 

private GoogleMap mMap; 
private GoogleApiClient mGoogleApiClient; 
private double mLatitude, mLongitude; 

private SupportPlaceAutocompleteFragment autocompleteFragment; 

public MapFragment() { 
    // Required empty public constructor 
} 


@Override 
public void onCreate(Bundle savedInstanceState) { 
    if (BuildConfig.DEBUG) { 
     Log.d(TAG, "onCreate"); 
    } 
    super.onCreate(savedInstanceState); 

    buildGoogleApiClient(); 


} 

@Override 
public View onCreateView(LayoutInflater inflater, ViewGroup container, 
         Bundle savedInstanceState) { 
    if (BuildConfig.DEBUG) { 
     Log.d(TAG, "onCreateView"); 
    } 
    // Inflate the layout for this fragment 
    final View view = inflater.inflate(R.layout.fragment_map, container, false); 

    final SupportMapFragment mapFragment = (SupportMapFragment) getChildFragmentManager().findFragmentById(R.id.map); 
    mapFragment.getMapAsync(this); 

    final DrawerLayout drawer = (DrawerLayout) getActivity().findViewById(R.id.drawer_layout); 

    final Toolbar toolbar = (Toolbar) view.findViewById(R.id.map_toolbar); 
    ((AppCompatActivity) getActivity()).setSupportActionBar(toolbar); 

    ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
      getActivity(), drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close); 
    drawer.addDrawerListener(toggle); 
    toggle.syncState(); 

    autocompleteFragment = (SupportPlaceAutocompleteFragment) 
      getChildFragmentManager().findFragmentById(R.id.place_autocomplete_fragment); 

    return view; 
} 

protected synchronized void buildGoogleApiClient() { 
    mGoogleApiClient = new GoogleApiClient.Builder(getContext()) 
      .addConnectionCallbacks(this) 
      .addOnConnectionFailedListener(this) 
      .addApi(LocationServices.API) 
      .build(); 
} 


private void getMyLocation() { 
    if (ContextCompat.checkSelfPermission(getContext(), 
      Manifest.permission.ACCESS_FINE_LOCATION) 
      != PackageManager.PERMISSION_GRANTED) { 
     PermissionUtils.requestPermission((AppCompatActivity) getActivity(), MY_LOCATION_REQUEST_PERMISSION, Manifest.permission.ACCESS_FINE_LOCATION, false); 
    } else { 
     final Location lastLocation = LocationServices.FusedLocationApi.getLastLocation(
       mGoogleApiClient); 
     if (lastLocation != null) { 
      mLatitude = lastLocation.getLatitude(); 
      mLongitude = lastLocation.getLongitude(); 
      LatLng latLng = new LatLng(mLatitude, mLongitude); 
      CameraUpdate cameraUpdate = CameraUpdateFactory.newLatLngZoom(latLng, 17); 
      if (mMap != null) { 
       mMap.animateCamera(cameraUpdate); 
       mClusterManager.clearItems(); 
       addItems(); 
      } 
     } else { 
      if (mMap != null) { 
       mMap.setMyLocationEnabled(false); 
      } 
      final ImageButton myLocation = (ImageButton) getView().findViewById(R.id.my_location); //TODO migliorare 
      myLocation.setVisibility(View.GONE); 
     } 
    } 

} 


@Override 
public void onDestroy() { 
    if (BuildConfig.DEBUG) { 
     Log.d(TAG, "onDestroy"); 
    } 
    super.onDestroy(); 
} 

@Override 
public void onDestroyView() { 
    if (BuildConfig.DEBUG) { 
     Log.d(TAG, "onDestroyView"); 
    } 
    super.onDestroyView(); 

    mMap = null; 
    mGoogleApiClient = null; 
    autocompleteFragment = null; 
} 

@Override 
public void onStart() { 
    if (BuildConfig.DEBUG) { 
     Log.d(TAG, "onStart"); 
    } 
    super.onStart(); 
    if (mGoogleApiClient != null) 
     mGoogleApiClient.connect(); 
} 

@Override 
public void onStop() { 
    if (BuildConfig.DEBUG) { 
     Log.d(TAG, "onStop"); 
    } 
    mGoogleApiClient.disconnect(); 
    super.onStop(); 
} 

@Override 
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) { 
    if (requestCode == MY_LOCATION_REQUEST_PERMISSION) { 
     if (PermissionUtils.isPermissionGranted(permissions, grantResults, 
       Manifest.permission.ACCESS_FINE_LOCATION)) { 
      // Enable the my location layer if the permission has been granted. 

      getMyLocation(); 
     } else { 
      //TODO avvisare che si devono dare i permessi? 
      // Display the missing permission error dialog when the fragments resume. 
     } 
    } else if (requestCode == ENABLE_LOCATION_REQUEST_PERMISSION) { 
     if (PermissionUtils.isPermissionGranted(permissions, grantResults, 
       Manifest.permission.ACCESS_FINE_LOCATION)) { 
      // Enable the my location layer if the permission has been granted. 
      enableMyLocation(); 
     } else { 
      //TODO avvisare che si devono dare i permessi? 
      // Display the missing permission error dialog when the fragments resume. 
     } 
    } 

} 

private void enableMyLocation() { 
    if (ContextCompat.checkSelfPermission(getContext(), 
      Manifest.permission.ACCESS_FINE_LOCATION) 
      != PackageManager.PERMISSION_GRANTED) { 
     PermissionUtils.requestPermission((AppCompatActivity) getActivity(), ENABLE_LOCATION_REQUEST_PERMISSION, Manifest.permission.ACCESS_FINE_LOCATION, false); 
    } else { 
     if (mMap != null) { 
      // Access to the location has been granted to the app. 
      mMap.setMyLocationEnabled(true); 
      //getMyLocation(); 
     } 
    } 
} 


@Override 
public void onMapReady(GoogleMap googleMap) { 
    if (BuildConfig.DEBUG) { 
     Log.d(TAG, "mapReady"); 
    } 
    mMap = googleMap; 
    mMap.setOnCameraChangeListener(this); 
    enableMyLocation(); 
    setUpClusterer(); 
} 

@Override 
public void onConnected(@Nullable Bundle bundle) { 
    if (BuildConfig.DEBUG) { 
     Log.d(TAG, "onConnected"); 
    } 
    if (ContextCompat.checkSelfPermission(getContext(), 
      Manifest.permission.ACCESS_FINE_LOCATION) 
      != PackageManager.PERMISSION_GRANTED) { 
     PermissionUtils.requestPermission((AppCompatActivity) getActivity(), MY_LOCATION_REQUEST_PERMISSION, Manifest.permission.ACCESS_FINE_LOCATION, false); 
    } else { 
     final Location lastLocation = LocationServices.FusedLocationApi.getLastLocation(
       mGoogleApiClient); 
     if (lastLocation != null) { 
      mLatitude = lastLocation.getLatitude(); 
      mLongitude = lastLocation.getLongitude(); 
      CameraUpdate cameraUpdate = CameraUpdateFactory.newLatLngZoom(new LatLng(mLatitude, mLongitude), 17); 
      if (mMap != null) { 
       mMap.moveCamera(cameraUpdate); 
       mClusterManager.clearItems(); 
       addItems(); 
      } 
     } else { 
      if (mMap != null) { 
       mMap.setMyLocationEnabled(false); 
      } 
      final ImageButton myLocation = (ImageButton) getView().findViewById(R.id.my_location); //TODO migliorare 
      myLocation.setVisibility(View.GONE); 
     } 
    } 
} 

@Override 
public void onConnectionSuspended(int i) { 

    Log.i("GOOGLE API CLIENT", "Connection suspended"); 
    mGoogleApiClient.connect(); 
} 

@Override 
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) { 

} 

@Override 
public void onCameraChange(CameraPosition cameraPosition) { 
    if (BuildConfig.DEBUG) { 
     Log.d(TAG, "onCameraChange"); 
    } 
    LatLng center = cameraPosition.target; 
    Snackbar.make(getView(), center.latitude + " - " + center.longitude, Snackbar.LENGTH_SHORT); 
} 

} 

Hier ist das Layout:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:app="http://schemas.android.com/apk/res-auto" 
xmlns:tools="http://schemas.android.com/tools" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
tools:context="me.grinworld.grinpark.MapFragment"> 

<fragment xmlns:android="http://schemas.android.com/apk/res/android" 
    android:id="@+id/map" 
    android:name="com.google.android.gms.maps.SupportMapFragment" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" /> 

<android.support.v7.widget.Toolbar 
    android:id="@+id/map_toolbar" 
    android:layout_width="match_parent" 
    android:layout_height="?attr/actionBarSize" 
    android:layout_margin="8dp" 
    android:background="@drawable/map_bar" 
    android:elevation="3dp" 
    android:padding="3dp"> 

    <RelativeLayout 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:orientation="horizontal" 
     android:background="@drawable/map_bar_search"> 

     <ImageView 
      android:id="@+id/fav_icon" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_marginStart="5dp" 
      android:layout_marginEnd="5dp" 
      android:layout_centerVertical="true" 
      android:layout_alignParentEnd="true" 
      android:src="@drawable/ic_favorite_idle"/> 
     <fragment 
      android:id="@+id/place_autocomplete_fragment" 
      android:name="com.google.android.gms.location.places.ui.SupportPlaceAutocompleteFragment" 
      android:layout_width="match_parent" 
      android:layout_height="match_parent" 
      android:layout_toStartOf="@id/fav_icon" 
      android:layout_gravity="center" /> 

    </RelativeLayout> 

</android.support.v7.widget.Toolbar> 

Answer 1

BESCHLOSSEN. Mir ist gerade aufgefallen, dass ich, seit ich den ClusterManager nutze, diesen Manager als onCameraChangeListener eingerichtet habe, der offensichtlich meine benutzerdefinierte Methode außer Kraft gesetzt hat.