我试着在我的谷歌地图上做一个标记。我遵循了一个教程,但是当我放入setBuiltInZoomControls()时,出现一个错误消息"The method setBuiltInZoomControls() is undefined for the type MapView“。我能做些什么来解决这个问题?mainactivity.java:import android.view.Menu;
import com.google
CASE 1:如果我用onCreateView方法编写了下面的代码,那么在初始化googleMap之前就会调用它,这就是我为什么要获得Null指针异常的原因。((SupportMapFragment) getChildFragmentManager().findFragmentById(R.id.googlemap)).getMapAsync(this);if(googleMap!=null){ googleMap
java.lang.NullPointerException: Attempt to invoke virtual method 'void com.google.android.gms.maps.GoogleMap.clearandroid:layout_width="match_parent"Main:
googleMap.setOnMarkerDragListener(new Go
public class GoogleMap extends Fragment implements OnMapReadyCallback {
private static final LatLng Ahmedabad = new LatLng(23.022214, 72.542786);
this.googleMap</e
googleMap;double latitude = 0;private int PROXIMITY_RADIUSSupportMapFragment fragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.googleMap= new GooglePlacesReadTask();
Object[] toPass = new Object