aurelhubert/ahbottomnavigation

Snackbar behaves incorrectly when a FAB is present

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#61 opened on Apr 27, 2016

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 (10 comments) (0 reactions) (1 assignee)Java (3,851 stars) (695 forks)batch import
bughelp wanted

Description

When using both a Snackbar (set to Snackbar.LENGTH_INDEFINITE in my testing) and a FloatingActionButton together, the swipe to dismiss behaviour on the Snackbar tries to snap back to the start of the screen throughout the swipe causing a graphical glitch. The Snackbar dismisses without this graphical glitch if a FAB is not present in the Coordinator Layout.

The FAB also seems not to react to the Snackbar swipe to dismiss events as it stays where it is after the dismiss, instead of dropping down to just above the Bottom Navigation.

Contributor guide

Tech stack
javaandroid
Domain
mobile
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Android development basicsCoordinatorLayout
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
30
Research direction
Investigate the interaction between Snackbar with LENGTH INDEFINITE and FloatingActionButton within CoordinatorLayout. Look at the Snackbar's swipe to dismiss behavior, specifically how it snaps during swipe when a FAB is present. Check the SwipeDismissBehavior class and the library's implementation of CoordinatorLayout.Behavior for FAB. The issue also mentions the FAB not moving after dismiss, so examine the animate offset logic for FAB. There are 10 comments that may contain additional details. No linked PRs.