androidx.preference continues to use SwitchCompat, to use the new MaterialSwitch need to override preferenceTheme as shown in the Material Components Catalog example: https://github.com/material-components/material-components-android/commit/229eb9d64f0e2f3972fddb0abcd12baa3e9e96cb
Some toolbars in settings are missing a shadow, likely has to do with https://github.com/material-components/material-components-android/commit/b49284ec75ab16a9f649b97cb26aa4a17bc82512, verify it shows up on scrolling. Not showing up. Decided to switch to drawing behind all system bars and to fix all issues (see tasks below).
Change to draw under system bars by default, see Material Components Catalog example.
- Preferences: customized RecyclerView to respect navigation bar padding. Tested on 5, 6, 8, 10, 12, 13, appears to work as expected.
- Use androidx.core.widget.NestedScrollView which works with app bar coloring when scooting to the top.
- BottomNavigationView does draw behind a navigation bar in button mode, however, on API 29+ the system adds a scrim that makes the color not noticeable.
- ViewPager2 (since 1.1.0-beta01) breaks dispatching insets to views by consuming insets. Need to set ViewCompat.setOnApplyWindowInsetsListener which just passes along insets. Their workaround is based on the assumption page views may consume or modify insets (which is possible pre-R, see View.sBrokenInsetsDispatch), but they really shouldn't.

Tasks

[x] Shows: fix bottom nav inset, test on all devices. Insets do not reach BottomNavigationView because ViewPager2 (since 1.1.0-beta01) consumes them.
[x] Shows: fix app bar flickering on scroll, test on all devices. This is caused by multiple child views of CoordinatorLayout that supply scroll events, which AppBarLayout listens to. Solve by explicitly setting liftOnScrollTargetViewId to the scrolling view of the current page.
[x] In button mode in landscape layout, the navigation bar requires inset on the left/right. Solved by applying a window inset listener to the root ViewGroup and padding it accordingly. Note: the Catalog example is using the decor view, however, this breaks the navigation bar scrim (it's always fully transparent).
[x] Resizing when an input method is shown is now broken.
[x] Check SnackBars.
[x] Check QuickCheckInActivity, probably should not use edge-to-edge. Any others?
[x] Check FullScreenActivity, https://developer.android.com/develop/ui/views/layout/edge-to-edge#step_4_immersive_mode
[x] Remove status and nav bar settings from themes? No, launch theme will have status bar with not desired color.
[ ] Submit PR with Preferences RecyclerView padding fix to Material Components?

UweTrottmann / SeriesGuide