我有2个标记,我想在它们之间画一条线,并显示距离文本在线的上方,就像Google地图Web版中一样。
我已经找到了一个示例,可以在2个标记之间画一条线:这里,但是如何在线的上方添加文本呢?
我已经找到了一个示例,可以在2个标记之间画一条线:这里,但是如何在线的上方添加文本呢?
float[] distance1 = new float[1];
Location.distanceBetween(userMarker.getPosition().latitude, userMarker.getPosition().longitude, positionMarker.getPosition().latitude, positionMarker.getPosition().longitude, distance1);
LinearLayout distanceMarkerLayout = (LinearLayout) getLayoutInflater().inflate(R.layout.distance_marker_layout, null);
distanceMarkerLayout.setDrawingCacheEnabled(true);
distanceMarkerLayout.measure(MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED), MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
distanceMarkerLayout.layout(0, 0, distanceMarkerLayout.getMeasuredWidth(), distanceMarkerLayout.getMeasuredHeight());
distanceMarkerLayout.buildDrawingCache(true);
TextView positionDistance = (TextView) distanceMarkerLayout.findViewById(R.id.positionDistance);
positionDistance.setText(distance1[0]+" meters");
Bitmap flagBitmap = Bitmap.createBitmap(distanceMarkerLayout.getDrawingCache());
distanceMarkerLayout.setDrawingCacheEnabled(false);
BitmapDescriptor flagBitmapDescriptor = BitmapDescriptorFactory.fromBitmap(flagBitmap);
double dLon = Math.toRadians(flagMarker.getPosition().longitude - positionMarker.getPosition().longitude);
double lat1 = Math.toRadians(positionMarker.getPosition().latitude);
double lat2 = Math.toRadians(flagMarker.getPosition().latitude);
double lon1 = Math.toRadians(positionMarker.getPosition().longitude);
double Bx = Math.cos(lat2) * Math.cos(dLon);
double By = Math.cos(lat2) * Math.sin(dLon);
double lat3 = Math.atan2(Math.sin(lat1) + Math.sin(lat2), Math.sqrt((Math.cos(lat1) + Bx) * (Math.cos(lat1) + Bx) + By * By));
double lon3 = lon1 + Math.atan2(By, Math.cos(lat1) + Bx);
lat3 = Math.toDegrees(lat3);
lon3 = Math.toDegrees(lon3);
Marker centerOneMarker = mMap.addMarker(new MarkerOptions()
.position(new LatLng(lat3, lon3))
.icon(flagBitmapDescriptor));
一种想法是使用标记的纬度和经度坐标计算它们之间的中点,然后放置一个信息窗口并显示您想要展示的任何信息。或者像以下链接所示的内容可能会有帮助:链接