现在下面是我的代码,在地图geopoints之间绘制路径。这工作非常好。我试图实现的不是画一条线,而是用iPhone中的点(。)来显示这条路径。我希望它像这个gp1 ......... gp2,而不是画在像gp1_的单个直线上。绘制点划线(....)线索路径,而不是一个线路(________)
我已经尝试了几乎所有这样做的选择,但仍然没有这方面的成功,任何一个能帮助我解决这个?
private void drawPath(List geoPoints, int color) {
List overlays = objMapView.getOverlays();
int loopcount = geoPoints.size() - 1;
for (int i = 0; i < loopcount; i++) {
GeoPoint p1 = (GeoPoint) geoPoints.get(i);
GeoPoint p2 = (GeoPoint) geoPoints.get(i + 1);
MyPathOverLay p = null;
/**** Marking the start and end of the trailpath ****/
if (i == 0) {
Bitmap bmp = BitmapFactory.decodeResource(this.getResources(),R.drawable.greenflag);
p = new MyPathOverLay(p1, p2, 0xFFFF0000, true, false, bmp);
} else if (i == loopcount - 1) {
Bitmap bmp = BitmapFactory.decodeResource(this.getResources(),R.drawable.redflag);
p = new MyPathOverLay(p1, p2, 0xFFFF0000, false, true, bmp);
} else {
p = new MyPathOverLay(p1, p2, 0xFFFF0000, false, false, null);
}
overlays.add(p);
}
}
public class MyPathOverLay extends Overlay {
private GeoPoint gp1;
private GeoPoint gp2;
private int color;
Boolean isFirstPOI;
Boolean isLastPOI;
AudioMap audioMap;
Bitmap bmp;
public MyPathOverLay(GeoPoint gp1, GeoPoint gp2, int color,Boolean first, Boolean last,Bitmap bitMap) {
this.gp1 = gp1;
this.gp2 = gp2;
this.color = color;
this.isFirstPOI= first;
this.isLastPOI = last;
this.bmp = bitMap;
}
@Override
public void draw(Canvas canvas, MapView mapView, boolean shadow) {
Projection projection = mapView.getProjection();
Paint paint = new Paint();
Point point = new Point();
projection.toPixels(gp1, point);
paint.setColor(color);
Point point2 = new Point();
projection.toPixels(gp2, point2);
paint.setStrokeWidth(5);
paint.setAlpha(120);
canvas.drawLine(point.x, point.y, point2.x, point2.y, paint);
//---translate the GeoPoint to screen pixels---
Point screenPts = new Point();
mapView.getProjection().toPixels(gp1, screenPts);
//---translate the GeoPoint to screen pixels---
Point screenPts1 = new Point();
mapView.getProjection().toPixels(gp2, screenPts1);
if(isFirstPOI == true){
canvas.drawBitmap(bmp,screenPts.x-20,screenPts.y-40, null);
}
else if(isLastPOI == true) {
canvas.drawBitmap(bmp,screenPts1.x-20,screenPts1.y-35, null);
}
super.draw(canvas, mapView, shadow);
}
}
http://stackoverflow.com/questions/6167236/canvas-drawlines-displays-disjointed-segments – MKJParekh 2012-04-17 05:28:37
这个任务是离子使用旧的谷歌地图api(在写这篇评论的时刻,目前的是v2)? – DNax 2015-06-23 20:57:00