谷歌地图“标记变焦时移动 [英] Google Maps' marker moves when zooming
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问题描述
我添加了一个标记,以我的地图,但是当我放大它移动到左侧(最大放大它标志着正确的地方),当我缩小它移动到右侧(最大放大了它的标记像3000公里从正确的地方)。
I've added a mark to my map but when I zoom in it moves to the left (at maximum zoom in it marks the right place) and when I zoom out it moves to the right (at maximum zoom out it marks like 3000Km from the right place).
下面是绘制标记物的onCreate之前(图像62px宽x 70像素高)类:
Here's the class that draws the marker before the onCreate (the image is 62px w x 70px h):
class MapOverlay extends com.google.android.maps.Overlay
{
@Override
public boolean draw(Canvas canvas, MapView map, boolean shadow, long when)
{
super.draw(canvas, map, shadow);
Point screenPts = new Point();
map.getProjection().toPixels(point, screenPts);
Bitmap bmp = BitmapFactory.decodeResource(getResources(), R.drawable.mapmarker);
canvas.drawBitmap(bmp, screenPts.x + 50, screenPts.y - 70, null);
return true;
}
}
和这里的code我用它来调用类:
And here's the code I use to call the class:
latitud = loc.getLatitude();
longitud = loc.getLongitude();
precision = loc.getAccuracy();
controlMapa = map.getController();
point = new GeoPoint((int) (latitud * 1E6), (int) (longitud * 1E6));
controlMapa.animateTo(point);
controlMapa.setZoom(17);
MapOverlay mapOverlay = new MapOverlay();
List<Overlay> listOfOverlays = map.getOverlays();
listOfOverlays.clear();
listOfOverlays.add(mapOverlay);
map.invalidate();
这是什么问题?我怎样才能让它们移动到正确的点每次变焦的变化?
What's the problem? How can I make them move to the correct point each time zoom changes?
感谢你在前进!
推荐答案
解决了!我不得不补充:
Solved! I just had to add:
canvas.drawBitmap(bmp, screenPts.x - (bmp.getWidth() / 2), screenPts.y - bmp.getHeight(), new Paint());
而不是:
canvas.drawBitmap(bmp, screenPts.x + 50, screenPts.y - 70, null);
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