blink marker and transparent accuracy circle in OSMDroid

Question

1. How to make a blink marker on OSMDroid map? IMHO to redraw it's bitmap (or whole map?) by timer is too expencive.

2. How to make a transparent accuracy circle? Most importantly, how to calculate visible radius by zoom&accuracy?

Who have examples, I would have looked, thank you.

p.s. I saw google maps examples, no, I need osmdroid working code.

Answer 1

For 2)

• either use OSMBonusPack Polygon with Polygon.pointsAsCircle

• or create your own overlay inspired from osmdroid DirectedLocationOverlay

BTW, 2 questions should lead to 2 SO posts.