Google Maps v2 - 设置我的位置并放大

11 回答

• 51

  你不能在一个谷歌 Map 中制作两件事（比如放大并转到我的位置）？

  从编码的角度来看，您可以按顺序执行：

  CameraUpdate center=
          CameraUpdateFactory.newLatLng(new LatLng(40.76793169992044,
                                                   -73.98180484771729));
      CameraUpdate zoom=CameraUpdateFactory.zoomTo(15);
  
      map.moveCamera(center);
      map.animateCamera(zoom);
  

  在这里，我首先移动相机，然后为相机设置动画，尽管两者都可能是 animateCamera() . 是否 GoogleMap 将这些合并为一个单独的事件，我不能说，因为它太快了 . :-)

  Here is the sample project从中我拉了上面的代码 .

  ---

  对不起，这个答案是有缺陷的 . 有关通过创建 CameraPosition 然后从 CameraPosition 创建 CameraUpdate 的方法，可以一次性真正执行此操作的方法，请参见Rob's answer .

  回复于 2024-05-20T04:25:44+08:00
• 13

  它's possible to change location, zoom, bearing and tilt all in one go. It'也可以设置 animateCamera() 呼叫的持续时间 .

  CameraPosition cameraPosition = new CameraPosition.Builder()
      .target(MOUNTAIN_VIEW)      // Sets the center of the map to Mountain View
      .zoom(17)                   // Sets the zoom
      .bearing(90)                // Sets the orientation of the camera to east
      .tilt(30)                   // Sets the tilt of the camera to 30 degrees
      .build();                   // Creates a CameraPosition from the builder
  map.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition));
  

  看看这里的文档：

  https://developers.google.com/maps/documentation/android/views?hl=en-US#moving_the_camera

  回复于 2024-05-20T04:25:44+08:00
• -2

  这是您问题的简单解决方案

  LatLng coordinate = new LatLng(lat, lng);
  CameraUpdate yourLocation = CameraUpdateFactory.newLatLngZoom(coordinate, 5);
  map.animateCamera(yourLocation);
  

  回复于 2024-05-20T04:25:44+08:00
• 0

  试试这种方式 -

  public class SummaryMapActivity extends FragmentActivity implements LocationListener{
  
   private GoogleMap mMap;
   private LocationManager locationManager;
   private static final long MIN_TIME = 400;
   private static final float MIN_DISTANCE = 1000;
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.summary_mapview);
  
      if (mMap == null) {
          // Try to obtain the map from the SupportMapFragment.
          mMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map))
                  .getMap();
          // Check if we were successful in obtaining the map.
          if (mMap != null) {
              mMap.addMarker(new MarkerOptions().position(new LatLng(0, 0)).title("Marker"));
          }
      }
      mMap.setMyLocationEnabled(true);
  
      locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
      locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, MIN_TIME, MIN_DISTANCE, this); 
  
  
  }
  
  @Override
  public void onLocationChanged(Location location) {
      LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude());
      CameraUpdate cameraUpdate = CameraUpdateFactory.newLatLngZoom(latLng, 15);
      mMap.animateCamera(cameraUpdate);
      locationManager.removeUpdates(this);
  
  }
  
  @Override
  public void onProviderDisabled(String provider) {
      // TODO Auto-generated method stub
  
  }
  
  @Override
  public void onProviderEnabled(String provider) {
      // TODO Auto-generated method stub
  
  }
  
  @Override
  public void onStatusChanged(String provider, int status, Bundle extras) {
      // TODO Auto-generated method stub
  
  }
  

  }

  回复于 2024-05-20T04:25:44+08:00
• 1

  你也可以设置两个参数，如，

  mMap.moveCamera( CameraUpdateFactory.newLatLngZoom(new LatLng(21.000000, -101.400000) ,4) );
  

  这会将您的 Map 定位在特定位置并进行缩放 . 我在设置我的 Map 时使用它 .

  回复于 2024-05-20T04:25:44+08:00
• 194

  这是一个迟到的答案，但我认为这将有所帮助 . 使用此方法：

  protected void zoomMapInitial(LatLng finalPlace, LatLng currenLoc) {
      try {
          int padding = 200; // Space (in px) between bounding box edges and view edges (applied to all four sides of the bounding box)
          LatLngBounds.Builder bc = new LatLngBounds.Builder();
  
          bc.include(finalPlace);
          bc.include(currenLoc);
          googleMap.moveCamera(CameraUpdateFactory.newLatLngBounds(bc.build(), padding));
      } catch (Exception e) {
          e.printStackTrace();
      }
  }
  

  加载 Map 后使用此方法 . 干杯!

  回复于 2024-05-20T04:25:44+08:00
• 3

  最简单的方法是使用CancelableCallback . 您应检查第一个操作是否完成，然后调用第二个操作：

  mMap.animateCamera(CameraUpdateFactory.newLatLngBounds(bounds, size.x, height, 0), new CancelableCallback() {
  
                  @Override
                  public void onFinish() {
                      CameraUpdate cu_scroll = CameraUpdateFactory.scrollBy(0, 500);
                      mMap.animateCamera(cu_scroll);
                  }
  
                  @Override
                  public void onCancel() {
                  }
              });
  

  回复于 2024-05-20T04:25:44+08:00
• 7

  1.在布局中添加xml代码以显示 Map .

  2.启用谷歌 Map api然后得到下面的api关键位置 .

  <fragment
                     android:id="@+id/map"
                 android:name="com.google.android.gms.maps.MapFragment"
                      android:layout_width="match_parent"
                      android:value="ADD-API-KEY"
                      android:layout_height="250dp"
                      tools:layout="@layout/newmaplayout" />
          <ImageView
              android:id="@+id/transparent_image"
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              android:src="@color/transparent" />
  

  3.在oncreate中添加此代码 .

  MapFragment mapFragment = (MapFragment) getFragmentManager().findFragmentById(R.id.map);
      mapFragment.getMapAsync(UpadateProfile.this);
  

  4.在oncreate之后添加此代码 . 然后使用放置在其中的标记访问当前位置

  @Override
  public void onMapReady(GoogleMap rmap) {
      DO WHATEVER YOU WANT WITH GOOGLEMAP
      map = rmap;
      setUpMap();
  }
  public void setUpMap() {
      map.setMapType(GoogleMap.MAP_TYPE_HYBRID);
    map.setMyLocationEnabled(true);
      map.setTrafficEnabled(true);
      map.setIndoorEnabled(true);
      map.getCameraPosition();
      map.setBuildingsEnabled(true);
      map.getUiSettings().setZoomControlsEnabled(true);
      markerOptions = new MarkerOptions();
      markerOptions.title("Outlet Location");
      map.setOnMapClickListener(new GoogleMap.OnMapClickListener() {
          @Override
          public void onMapClick(LatLng point) {
              map.clear();
              markerOptions.position(point);
              map.animateCamera(CameraUpdateFactory.newLatLng(point));
              map.addMarker(markerOptions);
              String all_vals = String.valueOf(point);
              String[] separated = all_vals.split(":");
              String latlng[] = separated[1].split(",");
              MyLat = Double.parseDouble(latlng[0].trim().substring(1));
              MyLong = Double.parseDouble(latlng[1].substring(0,latlng[1].length()-1));
              markerOptions.title("Outlet Location");
              getLocation(MyLat,MyLong);
          }
      });
  }
  public void getLocation(double lat, double lng) {
      Geocoder geocoder = new Geocoder(UpadateProfile.this, Locale.getDefault());
      try {
          List<Address> addresses = geocoder.getFromLocation(lat, lng, 1);
     } catch (IOException e) {
           TODO Auto-generated catch block
          e.printStackTrace();
          Toast.makeText(this,e.getMessage(),Toast.LENGTH_SHORT).show();
      }
  }
  @Override
  public void onLocationChanged(Location location) {
  }
  @Override
  public void onStatusChanged(String provider, int status, Bundle extras) {
  }
  @Override
  public void onProviderEnabled(String provider) {
  }
  @Override
  public void onProviderDisabled(String provider) {
  }
  

  回复于 2024-05-20T04:25:44+08:00
• 0

  @ CommonsWare的答案实际上并没有起作用 . 我发现这个工作正常：

  map.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(-33.88,151.21), 15));
  

  回复于 2024-05-20T04:25:44+08:00
• 1

  您无法在一个谷歌 Map 中为两件事（如放大和转到我的位置）制作动画 .
  因此，使用移动和动画相机进行缩放

  googleMapVar.moveCamera(CameraUpdateFactory.newLatLng(LocLtdLgdVar));
  googleMapVar.animateCamera(CameraUpdateFactory.zoomTo(10));
  

  回复于 2024-05-20T04:25:44+08:00
• 158

  gmap.animateCamera(CameraUpdateFactory.newCameraPosition(new CameraPosition(new LatLng(9.491327, 76.571404), 10, 30, 0)));
  

  回复于 2024-05-20T04:25:44+08:00