绘制给定一组点在地图上Overylay（Android 2.1的）空的多边形

本文介绍了绘制给定一组点在地图上Overylay（Android 2.1的）空的多边形的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我已经设置了 N 点，我想提请使用这些点 n边多边形。

I've set of n points and I want to draw a n-sided polygon using these points.

我试图用android.graphics.path（请参见下文）。

I tried using android.graphics.path (please see below).

Path path = new Path(); Vertex currVtx; for (int j = 0; j < vertices.size(); j++) { currVtx = vertices.get(j); if (!currVtx.hasLatLong()) continue; Point currentScreenPoint = getScreenPointFromGeoPoint( currVtx, mapview); if (j == 0) path.moveTo(currentScreenPoint.x, currentScreenPoint.y); // vertex. else path.lineTo(currentScreenPoint.x, currentScreenPoint.y); }

目前，我得到一个固体（填充画布的颜色）的多边形与此code。有没有一种方法，我可以得到一个未填充的多边形。有一个替代 android.graphics.Path

Currently I'm getting a solid (filled with the color of the canvas) polygon with this code. Is there a way that I can get an unfilled polygon. There is an alternative to android.graphics.Path

感谢。

推荐答案

定义绘制对象：

Paint mPaint = new Paint(); mPaint.setStrokeWidth(2); //2 pixel line width mPaint.setColor(0xFF097286); //tealish with no transparency mPaint.setStyle(Paint.Style.STROKE); //stroked, aka a line with no fill mPaint.setAntiAlias(true); // no jagged edges, etc.

然后绘制路径有：

Then draw the path with:

yourCanvas.drawPath(path,mPaint);

您可以看一下油漆文档，但也有选项吨来控制它的绘制。

You can look up the paint documentation but there are tons of options to control how its drawn.