Turn 1 · Snackbar placementSame message in each option: "Saved · Food & Drinks 8.000" with Undo. Shows for 4 seconds, then disappears.
1aFull width, Add button moves up
+Add
Saved · Food & Drinks 8.000Undo
HomeActivityStatsMore
The Android standard. Long messages have room to wrap. The Add button slides up while the snackbar shows and back down after.
1bTakes over the Add button's spot
Saved · Food & Drinks 8.000Undo
HomeActivityStatsMore
The Add button hides for 4 seconds while the snackbar fills that row. Nothing overlaps and nothing moves. You just saved an entry, so you're unlikely to need Add again right away.
1cTop, under the status bar
9:41●●●
Saved · Food & Drinks 8.000Undo
Drops in from the top, like an iOS notification. It doesn't touch the Add button or tab bar, but Undo is far from your thumb.
1dCovers the tab bar
+Add
Saved · Food & Drinks 8.000Undo
Slides up over the tab bar for 4 seconds. It never collides with anything, but the tabs can't be tapped until it goes away.