选择时更改Google地图标记的图标

Question

我只想在选中时更改地图标记的图标.

我在Fragment类中实现了GoogleMap.OnMarkerClickListener类.

public class MapFragment extends SupportMapFragment implements GoogleMap.OnMarkerClickListener{

....

  @Override
  public boolean onMarkerClick(Marker marker) {   
    marker.setIcon(BitmapDescriptorFactory.fromResource(R.drawable.placemarker_pressed));
    return false;
  }
}

单击时会更改标记图标.如果取消选中,如何将其设置回原始图标？

Answer 1

实现GoogleMap.OnMapClickListener接口并创建一个私有变量来存储当前选定的标记:

private Marker mSelectedMarker;

然后:

@Override
public boolean onMarkerClick(Marker marker) {   
    if (null != mSelectedMarker) {
        mSelectedMarker.setIcon(BitmapDescriptorFactory.fromResource(R.drawable.placemarker));
    }
    mSelectedMarker = marker;
    mSelectedMarker.setIcon(BitmapDescriptorFactory.fromResource(R.drawable.placemarker_pressed));
    return false;
}

@Override
public boolean onMapClick(LatLng latLng) {
  if(null != mSelectedMarker) {
    mSelectedMarker.setIcon(BitmapDescriptorFactory.fromResource(R.drawable.placemarker));
  }
    mSelectedMarker = null;
}