I am grateful for your lengthy response.
I will try to look into in a more detailed way later on.
By doing some quick checks, i noticed that methods like
getPointerIndex(int)are not available from LibGDX (or at least i did not manage to find).
On the other hand, LibGDX is a crossplatform tool, so it makes sense that native android events and methods can not be accessed.
For now i will trust, that events like