我想画一个自定义的GPS定位图标。我使用 图形页面 ，并创建了一个类 MyLocationArrow 扩展 MyLocationOverlay 。

I'm trying to draw a custom gps-location icon. I'm using MapView and have created a class MyLocationArrow that extends MyLocationOverlay.

我重写 drawMyLocation（）并绘制一个点100,100。但是，这是在屏幕上的坐标。如何从当前GPS定位得到屏幕坐标？

I override drawMyLocation() and draw a point at 100,100. But this is the coordinates on screen. How do I get the screen-coordinates from the current GPS-location?

推荐答案

您可以使用

android.graphics.Point toPixels(GeoPoint in,
                                android.graphics.Point out)

转换给定的的GeoPoint 来屏幕上的像素坐标，相对于左上角的图形页面的提供该投影。

Converts the given GeoPoint to onscreen pixel coordinates, relative to the top-left of the MapView that provided this Projection.