Nutiteq map freezing after adding a few lines and markers

问题

im developing a traffic application and there is a few traffic lines and warning markers on the road. I draw traffic lines according to zoom level. For example, If zoom level is over 10, im removing all lines and redraw for new zoom level. Because lines overflow on the road. I have lines over 400 for every zoom level. So every zoom in/ zoom out action, i remove and redraw. After a while my map begins to freeze and moving very slowly.

Is there any caching operation on background? Because im clearing the map every zoom level. In addition to what I should do to avoid freezing?

public GeometryLayer geoLayer;
geoLayer = new GeometryLayer(new EPSG4326());

line = new Line(arr_lat_long1, label, lineStyle, null); //add lines
                line.setVertexList(arr_lat_long1);
                geoLayer.add(line);
geoLayer.clear(); //clear layer

EDIT:

I tried mapview.destroyDrawingCache(); , mapview.postInvalidate(); but they doesn't help me. In addition, is there any way to refresh mapview?

回答1:

It is pretty much impossible to suggest anything without knowing more details. The best idea is to create a issue at https://github.com/nutiteq/hellomap3d/issues and attach a working test case displaying your issue. If it is reproducible, it will be investigated.

来源：https://stackoverflow.com/questions/27354516/nutiteq-map-freezing-after-adding-a-few-lines-and-markers