We know of 3 timelines. 2 future ones, and one present. Trunks saved the present and eventually went back to his time and destroyed cell and the androids. The furthest future timeline is screwed as everyone including Trunks died, however there are no more androids.
But how about the past, back further than present Goku's timeline. Won't the androids still spawn and end up creating a world just like Future Trunks'? Trunks only really saved one past timeline. This is however assuming there are more re past timelines which I don't see a reason for there not to be. Maybe after Trunks finished he made it his duty to always go back in time to a different timeline and take care of the androids without bothering the Z warriors? Has further past ever been mentioned in the manga or show?
But how about the past, back further than present Goku's timeline. Won't the androids still spawn and end up creating a world just like Future Trunks'? Trunks only really saved one past timeline. This is however assuming there are more re past timelines which I don't see a reason for there not to be. Maybe after Trunks finished he made it his duty to always go back in time to a different timeline and take care of the androids without bothering the Z warriors? Has further past ever been mentioned in the manga or show?