是否有google.maps.Polygon
(原生Google Maps API)中使用的第三方lib或Android类MapView
?我用谷歌搜索但我找不到它。
答案 0 :(得分:1)
在Maps API中没有用于绘制多边形的类。请参阅此处的文档:
http://code.google.com/android/add-ons/google-apis/reference/index.html
以下是我用于绘制路线的一些代码,给出了一个点列表。你可以修改它来做你需要的。
public class MapOverlay extends Overlay {
ArrayList<GeoPoint> route;
public MapOverlay(ArrayList<ParcelableGeoPoint> r) {
route = new ArrayList<GeoPoint>();
for (ParcelableGeoPoint p: r) {
route.add(p.getGeoPoint());
}
}
public void draw(Canvas canvas, MapView mapv, boolean shadow) {
super.draw(canvas, mapv, shadow);
Paint mPaint = new Paint();
mPaint.setDither(true);
mPaint.setColor(Color.rgb(128, 136, 231));
mPaint.setAlpha(100);
mPaint.setStyle(Paint.Style.FILL_AND_STROKE);
mPaint.setStrokeJoin(Paint.Join.ROUND);
mPaint.setStrokeCap(Paint.Cap.ROUND);
mPaint.setStrokeWidth(6);
Path path = new Path();
GeoPoint start = route.get(0);
for (int i = 1; i < route.size(); ++i) {
Point p1 = new Point();
Point p2 = new Point();
Projection projection = mapv.getProjection();
projection.toPixels(start, p1);
projection.toPixels(route.get(i), p2);
path.moveTo(p2.x, p2.y);
path.lineTo(p1.x, p1.y);
start = route.get(i);
}
canvas.drawPath(path, mPaint);
}
}