在Viewpager上添加带有标记的Google地图

<androidx.viewpager.widget.ViewPager
    android:id="@+id/viewPager"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

<FrameLayout
    android:id="@+id/mapContainer"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

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

public class MapFragment extends Fragment implements OnMapReadyCallback {

    private MapView mapView;
    private GoogleMap googleMap;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.fragment_map, container, false);
        mapView = rootView.findViewById(R.id.mapView);
        mapView.onCreate(savedInstanceState);
        mapView.getMapAsync(this);
        return rootView;
    }

    @Override
    public void onResume() {
        super.onResume();
        mapView.onResume();
    }

    @Override
    public void onPause() {
        super.onPause();
        mapView.onPause();
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        mapView.onDestroy();
    }

    @Override
    public void onLowMemory() {
        super.onLowMemory();
        mapView.onLowMemory();
    }

    @Override
    public void onMapReady(GoogleMap map) {
        googleMap = map;
        // 在地图上添加标记
        LatLng markerPosition = new LatLng(37.7749, -122.4194);
        googleMap.addMarker(new MarkerOptions().position(markerPosition).title("San Francisco"));
        googleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(markerPosition, 12));
    }
}

public class MainActivity extends AppCompatActivity {

    private ViewPager viewPager;
    private MapFragmentPagerAdapter pagerAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        viewPager = findViewById(R.id.viewPager);
        pagerAdapter = new MapFragmentPagerAdapter(getSupportFragmentManager());
        viewPager.setAdapter(pagerAdapter);
    }

    private class MapFragmentPagerAdapter extends FragmentPagerAdapter {

        public MapFragmentPagerAdapter(FragmentManager fm) {
            super(fm);
        }

        @Override
        public Fragment getItem(int position) {
            return new MapFragment();
        }

        @Override
        public int getCount() {
            return 3; // 假设有3个页面
        }
    }
}