Android Google Maps:如何获取屏幕设备中当前显示的区域? [英] Android Google Maps: How to get the area which is currently shown in screen device?

问题描述

有没有一种方法可以获取设备上显示的当前区域的坐标?

Is there a way to get the coordinates of the current area, which is shown at the device?

背景是，我们要显示附近"的地点，这些地点存储在我们自己的数据库中.假设用户查看以下地图片段:

Background is, we want to show "nearby" places, which are stored in our own database. So let's say, the user looks at following clip of a map:

如何获取屏幕的经度/纬度(或屏幕中间的点和覆盖所有内容的半径?).请记住，地图中心通常不是当前位置，因为用户可以移动卡片的中心！

How do we get the longitude/latitude of the screen (or the point in the middle of the screen and a radius which covers everything?). Please keep in mind, center of the map is not usually the current position, since the user can move the center of the card!

推荐答案

使用map.getProjection().getVisibleRegion().从VisibleRegion您可以获取LatLngBounds，它很容易使用.您也可以直接尝试使用可能是梯形的区域.

Use map.getProjection().getVisibleRegion(). From VisibleRegion you can get LatLngBounds, which is easy to work with. You may also try directly with the region, which might be trapezoid.

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