android - Osmdroid 最大缩放级别显示两个地理位置

Question

我正在使用 osmdroid 库来渲染 map 。我有两个间歇性变化的地理点，并希望 org.osmdroid.views.MapView 调整大小和转换以确保两个点始终可见。我可以轻松地将 map 重新​​居中于两者之间的中间点，但如何设置缩放级别以确保我的两个点可见？

更新

  //Getting pickup and destination latitude and longitude
                GeoPoint pickupLocation = null;
                if (tripRequest.getPickupLat() != null && tripRequest.getPickupLong() != null) {
                    pickupLocation = new GeoPoint(tripRequest.getPickupLat(), tripRequest.getPickupLong());
                }
                GeoPoint destinationLocation = null;
                if (tripRequest.getDestinationLat() != null && tripRequest.getDestinationLong() != null) {
                    destinationLocation = new GeoPoint(tripRequest.getDestinationLat(), tripRequest.getDestinationLong());
                }

                if (destinationLocation != null && pickupLocation != null) {
                    //Adding destination marker to map
                    Marker destinationLocationMarker = new Marker(map);
                    destinationLocationMarker.setPosition(destinationLocation);
                    destinationLocationMarker.setAnchor(Marker.ANCHOR_CENTER, Marker.ANCHOR_BOTTOM);
                    destinationLocationMarker.setIcon(context.getResources().getDrawable(R.mipmap.pin_green_small));
                    map.getOverlays().add(destinationLocationMarker);
                    //Adding pickup marker to map
                    Marker pickupLocationMarker = new Marker(map);
                    pickupLocationMarker.setPosition(pickupLocation);
                    pickupLocationMarker.setAnchor(Marker.ANCHOR_CENTER, Marker.ANCHOR_BOTTOM);
                    pickupLocationMarker.setIcon(context.getResources().getDrawable(R.mipmap.pin_red_small));
                    map.getOverlays().add(pickupLocationMarker);


                    BoundingBox boundingBox = BoundingBox.fromGeoPoints(Arrays.asList(destinationLocation, pickupLocation));
                    mapController = map.getController();

                    mapController.setCenter(boundingBox.getCenter());

                    mapController.setZoom(10);// I need to set this zoom properly
                    touchListener = new TouchListener();
                    map.setOnTouchListener(touchListener);

Answer 1

使用 zoomToBoundingBox。它应该可以工作，如果没有问题，将在其他地方。

尝试:

map.zoomToBoundingBox(boundingBox, false);
map.invalidate();

如果这仍然不起作用，请检查此响应: zoom mapView to a certain bounding box on osmdroid

如果您真的想自己计算缩放比例，您总能在 source code of zoomToBoundingBox method 中找到灵感。并修改计算以满足您的需要。