上的标记组中心的Andr​​oid谷歌地图？ [英] Center android google map on group of markers?

问题描述

我有一堆我在其中加载到谷歌地图的标记。我的问题是，照相机是不ontop的标记。我可以集中它在我的所有标记的​​顶部？

I have a bunch of markers in which I load onto a google map. My problem is that, the camera is not ontop of the markers. Can I center it on top of all my markers?

我加入我的标记与此code：

I am adding my markers with this code:

for(int i = 0; i < jsonArray.length(); i++) {

                String breweryName = jsonArray.getJSONObject(i).getString("brewery");
                String lat = jsonArray.getJSONObject(i).getString("lat");
                String lng = jsonArray.getJSONObject(i).getString("lng");
                String bID = jsonArray.getJSONObject(i).getString("breweryID");

                double latD = Double.parseDouble(lat);
                double lngD = Double.parseDouble(lng);



                m.addMarker(new MarkerOptions()
                        .position(new LatLng(latD, lngD))
                        .title(breweryName));


            }

我看着堆，发现了这个问题，这是我的一样：

I looked on stack and found this question, which is the same as mine:

的Andr​​oid谷歌地图API V2中心标志

但不是它的背后多少背景和我不知道如何实现它。

But there isnt much context behind it and am not sure how to implement it.

推荐答案

您可以将特定范围内动画的相机。比方说，你有标记的ArrayList，类似的信息（这也可以LatLngs列表，双打，任何包含经/纬度的标志）

You can animate your camera within specific bounds. Let's say you have an ArrayList of markers, something like (this could also be a list of LatLngs, doubles, anything contains the latitude/longitude for your marker)

List<MarkerOptions> markers = new ArrayList<MarkerOptions>();

然后，您可以确保它们都是可见的在地图上通过执行以下操作

You can then make sure they are all visible on your map by doing the following

LatLngBounds.Builder builder = new LatLngBounds.Builder();
LatLng position;
for(int i = 0; i < markers.size(); i++){
    position = markers.get(i).getPosition();
    builder.include(new LatLng(position.latitude, position.longitude));
}
LatLngBounds bounds = builder.build();
map.animateCamera(CameraUpdateFactory.newLatLngBounds(bounds, 15));

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