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Complete Swipe-to-Dismiss list demo (delete + archive + undo) - #210

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dipenpradhan:issue-188-swipe-dismiss
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Complete Swipe-to-Dismiss list demo (delete + archive + undo)#210
dipenpradhan wants to merge 12 commits into
Gurupreet:masterfrom
dipenpradhan:issue-188-swipe-dismiss

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@dipenpradhan

@dipenpradhan dipenpradhan commented Jun 7, 2026

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Summary

Completes the Swipe-to-Dismiss / Swipe Actions list demo, as proposed in #188.

The "Swipeable Lists" tab under Advance Lists already rendered SwipeToDismissBox items, but swipes never removed anything (onItemSwiped was a no-op), there was no undo, and only one direction was enabled. This PR makes it a full Material3 swipe-actions showcase:

  • Swipe left (end → start): red Delete background with icon, item removed from the LazyColumn
  • Swipe right (start → end): Archive reveal background with icon, item removed
  • Undo Snackbar after either action restores the item at its original position (the M3-recommended interaction pattern)
  • Directional threshold configured via positionalThreshold (half the item width)
  • Items are keyed (key = { it.id }) so dismiss state is correctly scoped per item, including after undo
  • Dark mode supported via the existing errorContainer/secondaryContainer theme colors
  • README "Coming Soon" no longer lists Swipe lists

Acceptance criteria from #188

  • SwipeToDismissBox demo with directional thresholds configured
  • Background shown during swipe (red Delete background with icon)
  • Item removed from the list on full swipe
  • Undo Snackbar after deletion
  • Dark mode support
  • Reachable from Home → Advance Lists → Swipeable Lists (existing wiring)
  • README updated

Closes #188

Verification

  • ./gradlew ktfmtCheck assembleDebug testDebugUnitTest passes locally (JDK 17, SDK 35)
  • CI ./gradlew build on this PR

Merge order

PR 10 of the stacked series. Depends on #195 → … → #209 — its diff includes their commits until they merge.

🤖 Generated with Claude Code

cc @Gurupreet for review

@dipenpradhan
dipenpradhan force-pushed the issue-188-swipe-dismiss branch from 80d77d8 to 368f005 Compare June 7, 2026 06:33
@dipenpradhan dipenpradhan mentioned this pull request Jun 7, 2026
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4 tasks
@dipenpradhan
feat: upgrade Kotlin to 2.1.20 with the K2 compiler
7884847 
- Bump kotlin-gradle-plugin 1.9.22 -> 2.1.20 (root + buildSrc)
- Adopt the new Compose Compiler Gradle plugin
  (org.jetbrains.kotlin.plugin.compose) in app and convention plugins
- Drop composeCompiler version constant and composeOptions blocks
- Replace removed -Xopt-in flag with -opt-in
- Bump KSP to 2.1.20-1.0.31 to match Kotlin

Fixes Gurupreet#182
@dipenpradhan
style: bump ktfmt-gradle to 0.22.0 and reformat
c3be6c5 
ktfmt-gradle 0.12.0 fails with 'Generic error during file processing'
once Kotlin 2.x is on the buildscript classpath. 0.22.0 supports
Kotlin 2.x and also formats *.kts build scripts, hence the repo-wide
reformat (no functional changes).
@dipenpradhan
dipenpradhan force-pushed the issue-188-swipe-dismiss branch from 368f005 to 486aea6 Compare September 8, 2026 06:37
@dipenpradhan
feat: bump compileSdk and targetSdk to 35 (Android 15)
7e67c89 
- AGP 8.2.2 -> 8.7.3 (compileSdk 35 supported from AGP 8.6)
- Gradle wrapper 8.5 -> 8.9 (required by AGP 8.7.x)
- PinLockView: removeLast() -> removeAt(lastIndex); at compileSdk 35 the
  call binds to java.util.List#removeLast (API 35) instead of the Kotlin
  stdlib extension, failing lint NewApi against minSdk 25

Fixes Gurupreet#185
@dipenpradhan
feat: adopt the Compose BOM (2024.12.01) for unified version management
eba2836 
- Replace compose/material3 version constants with composeBom
- Strip explicit versions from BOM-managed artifacts
- Import the BOM platform on every configuration that receives
  Compose artifacts (implementation, debugImplementation,
  androidTestImplementation, :data)
- Migrate API removals that come with Compose 1.7 / Material3 1.3:
  SmallTopAppBar -> TopAppBar, rememberRipple -> material3 ripple
- Update the outdated README Compose badge to the BOM version

Fixes Gurupreet#186
@dipenpradhan
feat: upgrade AndroidX Lifecycle to 2.8.7
272e4ed 
All lifecycle artifacts (viewmodel-compose, viewmodel-ktx,
livedata-ktx, runtime-ktx, viewmodel-savedstate) move together
via the shared androidLifecycleGrouped version.

Fixes Gurupreet#192
@dipenpradhan
feat: upgrade Navigation Compose to 2.8.9 with type-safe routes
d8323ed 
- navCompose 2.7.7 -> 2.8.9; add kotlinx-serialization-json 1.8.0
- Apply the Kotlin serialization plugin in gmail and tiktok demos
- Gmail: string routes -> @serializable route objects
- TikTok: TikTokScreen becomes a serializable sealed interface;
  the profile route carries a typed userId argument read via
  toRoute(), bottom bar selection uses NavDestination.hasRoute

Fixes Gurupreet#193
@dipenpradhan
refactor: migrate from ExoPlayer 2.x to AndroidX Media3 1.5.1
fb1fdce 
- Replace com.google.android.exoplayer:exoplayer with
  androidx.media3:media3-exoplayer and media3-ui
- Rewrite TikTokPlayer against the Media3 API (SimpleExoPlayer was
  removed; default media source factory handles asset URIs)
- Removes the last Jetifier warning produced by ExoPlayer 2.x

Fixes Gurupreet#183
@dipenpradhan
feat: upgrade Coil to 3.1.0
6656a2e 
- Move to the io.coil-kt.coil3 artifact group
- Add coil-network-okhttp (network fetching is a separate artifact
  in Coil 3, self-registered via ServiceLoader)
- Migrate call sites: rememberImagePainter(data=) ->
  rememberAsyncImagePainter(model=), coil.* -> coil3.* imports

Fixes Gurupreet#191
@dipenpradhan
feat: implement Pull-to-Refresh demo with Material3 PullToRefreshBox
3f44e12 
PullRefreshList was a fully commented-out stub (TODO revisit pull
refresh). It now demonstrates the first-party PullToRefreshBox with
a simulated 1.5s reload that prepends an item to the list.

Fixes Gurupreet#187
@dipenpradhan
test: add UI tests for the demo introduced in this change
4b34619 
Covers the new composables added here so the feature ships with its own
verification rather than relying on a later change in the stack.
@dipenpradhan
feat: complete Swipe-to-Dismiss demo with delete/archive actions and …
fa2e2e4 
…undo

The Swipeable Lists tab rendered SwipeToDismissBox items but swipes
never removed anything. Now:
- swipe left deletes (red background), swipe right archives
- items are actually removed from the keyed LazyColumn
- an Undo snackbar restores the item at its original position
- positionalThreshold set to half the item width

Fixes Gurupreet#188
@dipenpradhan
test: cover the swipe-to-dismiss demo and fix undo not restoring the row
8e29a2b 
Adds UI tests for the composables introduced here so the feature ships with
its own verification.

The undo test surfaced a real defect: tapping Undo re-added the album to the
backing list, but LazyColumn keeps the first visible item anchored, so a row
re-inserted above it silently landed off-screen and the user saw nothing
happen. The list now holds a LazyListState and scrolls the restored row back
into view.
@dipenpradhan
dipenpradhan force-pushed the issue-188-swipe-dismiss branch from 486aea6 to 8e29a2b Compare September 8, 2026 08:47
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Feature: Add Swipe-to-Dismiss / Swipe Actions list demo

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@dipenpradhan