I've been following up the "Add a line" section in the tutorial of Getting started for the Carto Mobile SDK https://carto.com/docs/carto-engine/mobile-sdk/getting-started/#basic-map-features and so far it's being so helpful. However, I find that the documentation about customizing the drawing of lines is either incomplete or it's hard to find.

I've already applied a couple of improvements to my line (which is actually a route that I'm displaying over the map):

• Smooth line joints, so they are connected with curves and not sharpen edges:

LineStyleBuilder lineStyleBuilder = new LineStyleBuilder(); lineStyleBuilder.setLineJoinType(LineJoinType.LINE_JOIN_TYPE_ROUND); lineStyleBuilder.setStretchFactor(2);
new Line(result.getPoints(), lineStyleBuilder.buildStyle());

• Improve drawing when zoom is in upper levels, reducing points to be drawn (this is applied on the DataSource object used to store the Lines):

routeDataSource = new LocalVectorDataSource(projection); routeDataSource.setGeometrySimplifier(new DouglasPeuckerGeometrySimplifier(1.0f / 320.0f));

That's pretty good, however I'd like to go further, and:

• Display the line with dashes, instead of a solid line from beginning to end
• Apply a transparency/alpha to the color of the route, so I can see the roads/streets/paths under the Line. This I tried, applying the following on the LineStyleBuilder, but it looks weird:

lineStyleBuilder.setColor(new com.carto.graphics.Color(Color.argb(180, 64, 125, 191)));