Adam Barth ffe14b0d27 Navigator.push and Navigator.pushNamed should return Futures (#6333)
These futures complete when the route is popped off the navigator. This
generalizes and simplifies a mechanism already in place for dialogs and
menus.

Fixes #5283
2016-10-14 16:05:45 -07:00
..
2016-06-14 12:15:41 -07:00