除去谷歌地图折线 [英] Removing a polyline from google maps

问题描述

是否有可能通过其ID来移除谷歌地图折线？其实我有一个活动，并在具体的案例来绘制折线已经在第二活动中删除它，我TRID通过意图传递折线但未能成功，我能够传递折线的id，现在的我试图通过它的ID删除的折线，这可能吗？感谢您的帮助。

Is it possible to remove a polyline from google maps through its id? Actually I have to draw a polyline in one activity and in a specific case have to remove it in the second activity, I trid to pass that polyline through intent but couldn't succeed, I was able to pass that polyline's id, now I am trying to remove the polyline through it's id, is it possible? Thanks for your help

推荐答案

这可能不是一个直接的答案，但在我的情况下，这是我会怎么做。

This may not be a direct answer but in my case this is how I would do it

首先跟踪折线。

Map<String , Polyline> mHashMap = new HashMap<String , Polyline>();
...
Polyline polyline = this.mMap.addPolyline(new PolylineOptions().....);

mHashMap.put(polyline.getId() , polyline);

现在将其删除。

//probably this would happen on `OnActivityResult` of first_activity

Polyline pl = mHashMap.get("polyline_id_from_first_activity_rerouted_from_second_activity");
pl.remove();

希望它能帮助：）

Hope it helps :)

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