Android Question how do i make this with b4a - part 2 ? vertical timeline, scroll header with navigation bar ?

hi, i was wondering - again, with what tools (library, class) ? i can make a screen like this ?
one is vertical timeline, https://github.com/vipulasri/Timeline-View
second is ( i don't know what to call it), when scrolled, the header is replaced by navbar at the top.
any working examples ?



regards.