找到所有的标记给定半径内 [英] Finding all the markers inside a given radius

问题描述

输入：给定一个特定的坐标（纬度和经度）和半径 输出：显示所有驻留在从标记给出列表圈子标记

Input: Given a specific co-ordinate (latitude and longitude) and radius Output: Displaying all the markers which reside under that circle from given list of markers.

我怎样才能做到这一点在谷歌地图？

How can I do this in google maps?

推荐答案

只是遍历所有你必须​​标记和使用下面的函数来获得具体的坐标来标记的距离： computeDistanceBetween （）：

Just iterate all the markers you have and use the following function to get the distance from the specific co-ordinate to the marker: computeDistanceBetween():

要计算这个距离，调用computeDistanceBetween（），它传递   2 LatLng对象。

To compute this distance, call computeDistanceBetween(), passing it two LatLng objects.

我发现它在这里。然后，只需过滤掉一切变成是足够接近的标志。

I found it over here. Then just filter out all the markers that turn out to be close enough.

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