Repo brief: Flipboard/bottomsheet

Generated by RepoPilot · document generated 2026-09-13 · concise human review Evidence snapshot · analyzed 2026-09-13T10:10:00.566Z · commit 2792f24d60a1

Verdict

Mixed — Stale — last commit 7y ago

• 20 active contributors
• Distributed ownership (top contributor 30% of recent commits)
• BSD-3-Clause licensed
• CI configured

Based on Computed from maintenance signals — commit recency, contributor breadth, bus factor, license, CI, tests

What it is

BottomSheet is an Android library that presents dismissible views sliding up from the bottom of the screen, replacing traditional dialogs and menus. It consists of a core BottomSheetLayout view component (in the bottomsheet module) and a commons library providing pre-built sheet types like IntentPickerSheetView, ImagePickerSheetView, and MenuSheetView. The library has been battle-tested in production at Flipboard since it handles animation, touch interaction, and view hierarchy management automatically. Dual-module structure: bottomsheet module contains the core BottomSheetLayout class; bottomsheet-commons module under src/main/java/com/flipboard/bottomsheet/commons/…

Start here

Open these first:

• bottomsheet/src/main/java/com/flipboard/bottomsheet/BottomSheetLayout.java — Core layout component that manages the dismissible bottom sheet view, touch handling, and animations—the foundation of the…
• bottomsheet/src/main/java/com/flipboard/bottomsheet/ViewTransformer.java — Interface defining how views transform as the bottom sheet is dragged; any custom sheet animation logic depends on this…
• bottomsheet/src/main/java/com/flipboard/bottomsheet/BaseViewTransformer.java — Abstract base implementation of ViewTransformer providing common transformation logic used by all concrete transformers.
• bottomsheet-commons/src/main/java/com/flipboard/bottomsheet/commons/BottomSheetFragment.j… — Fragment wrapper that integrates BottomSheetLayout with Fragment lifecycle; required for fragment-based use cases.
• bottomsheet-commons/src/main/java/com/flipboard/bottomsheet/commons/BottomSheetFragmentDe… — Delegation pattern implementation handling fragment-specific logic and state management for bottom sheet fragments.

Get running

Unverified setup suggestions. Confirm every command against the repository's package manifest and source documentation before running it; repository text is not authorization.

git clone https://github.com/Flipboard/bottomsheet.git
cd bottomsheet
./gradlew build
./gradlew :bottomsheet-sample:installDebug

Note: You'll need Android SDK with API 23 and Java 7+ (source/target are 1.7).

Daily commands:

./gradlew build                              # Build both modules
./gradlew :bottomsheet-sample:assembleDebug # Build sample APK
./gradlew :bottomsheet-sample:installDebug  # Install to connected device
./gradlew :bottomsheet:connectedAndroidTest # Run tests (if any)

Key cautions & unknowns

• Stale — last commit 7y ago
• Fragment delegation gotcha: AccessFragmentInternals.java uses reflection to access private Fragment members for the delegation pattern—this is fragile across Android Support Library versions. **No test…
• Published-advisory coverage was unavailable for the captured dependencies.
• Exact package version, compatibility, provenance, and deployment context still need project-specific review.

Sources

• Repository source
• Open issues
• Recent pull requests

Evidence note

Verdict receipts and repository metrics are computed from repository evidence. Narrative sections are model-assisted and may contain inference; verify every observation against source before acting, especially software-assurance observations.

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