问题描述
似乎在中绘制多边形是异步的。尝试点击此示例中的加载按钮：
It seems that drawing of polygons is asynchronous in google maps api v3. Try to click the "Load" button in this example:
文本DONE的写入时间早于绘制网格！看起来矩形网格的绘制是异步的。 我想要在绘制网格后显示文本DONE！是否有一些事件处理程序？
the text "DONE" is written much sooner than the grid is drawn! It seems that drawing of rectangle grid is asynchronous. I want the text DONE displayed AFTER the grid is drawn! Is there some event handler for this?
代码的重要部分在于功能 action（）：
The important part of code is in function action():
polygons = draw_all_squares(map); // draw grid here
document.getElementById('status').innerHTML = 'DONE'; // displayed 2 seconds
// before the grid!
请注意，地图空闲事件不适用于此，因为地图不移动/缩放。您可以在这里尝试：
Note that map 'idle' event doesn't work for this, because the map is not moving/zooming. You can try here:http://jsfiddle.net/92Hxj/
也许它有谷歌地图不一样，但浏览器渲染？在任何情况下，应该存在一些事件处理程序。
Maybe it has something to do not with google maps but with browser rendering? In any case, some event handler for this should be present.
推荐答案
在绘制所有多边形被添加到同一内部的Google Maps事件队列中，可以在此示例中看到：
By triggering a small recentering of the map after drawing all the polygons this is added to the same internal google maps event queue as can be seen in this example: http://jsfiddle.net/rmXXF/40/
google.maps.event.addListener(map, 'idle', function() {
document.getElementById('status').innerHTML = 'DONE';
});
和
my_map.setCenter(new google.maps.LatLng(my_map.getCenter().lat(), my_map.getCenter().lng() + .000000001));
这篇关于在google maps api v3中完成多边形绘图时的处理的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！