I am looking for nice library that will pop up window - which I need to write some stuff (prefer to have small windows that not take entire phone + having more than 1 small window at the same time)
and automatically close it after X sec (prefer to have some nice circle time or such)
No need for a library. Just add some panels with the dimensions you need. Add views to them as you like. With "visible=true or false" they show up or not...