[英]How to draw dotted lines between geopoints on map in android?
我已经在这里引用了链接绘图虚线(....)路径而不是线条(________)
Bitmap bmp = BitmapFactory.decodeResource(this.getResources(),R.drawable.greenflag);
Bitmap bmp = BitmapFactory.decodeResource(this.getResources(),R.drawable.redflag);
在drawble.greenflag中,这是图像文件还是xml文件?
用它在两个地理位置之间画线
class MyOverlay extends Overlay
{
public MyOverlay() {
}
public void draw(Canvas canvas, MapView mapv, boolean shadow) {
super.draw(canvas, mapv, shadow);
Paint mPaint = new Paint();
mPaint.setDither(true);
mPaint.setColor(Color.RED);
mPaint.setStyle(Paint.Style.FILL_AND_STROKE);
mPaint.setStrokeJoin(Paint.Join.ROUND);
mPaint.setStrokeCap(Paint.Cap.ROUND);
mPaint.setStrokeWidth(100);
for (int i = 0; i < numPoints - 1; i++) {
float latiA = (float) Double.parseDouble(latlong[i].getLat());
float longiA = (float) Double.parseDouble(latlong[i].getLon());
float latiB = (float) Double.parseDouble(latlong[i + 1].getLat());
float longiB = (float) Double.parseDouble(latlong[i + 1].getLon());
//distance = getDistance(latiA, longiA, latiB, longiB);
int latA = (int) (1000000 * Double.parseDouble(latlong[i].getLat()));
int longA = (int) (1000000 * Double.parseDouble(latlong[i].getLon()));
int latB = (int) (1000000 * Double.parseDouble(latlong[i + 1].getLat()));
int longB = (int) (1000000 * Double.parseDouble(latlong[i + 1].getLon()));
GeoPoint gP1 = new GeoPoint(latA, longA);
GeoPoint gP2 = new GeoPoint(latB, longB);
Point p1 = new Point();
Point p2 = new Point();
Path path = new Path();
projection.toPixels(gP1, p1);
projection.toPixels(gP2, p2);
path.moveTo(p2.x, p2.y);
path.lineTo(p1.x, p1.y);
canvas.drawPath(path, mPaint);
}
}
}
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