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Android Offline-First Grocery List App

Build a grocery list app that works fully offline using Room as the source of truth, syncs changes to a remote backend via WorkManager when connectivity returns, and resolves edit conflicts. Learners practice offline-first architecture, background work scheduling, and conflict resolution on Android.

Estimate
~10.5h
Steps
5
Completed by
0
Proposed by
codeseed.app

Jetpack Compose · Room · WorkManager · Retrofit

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Project roadmap

  1. 01

    Design offline-first schema

    ~2h

    Model grocery items in Room with sync-status fields (pending, synced, conflicted).

  2. 02

    Build the UI and local CRUD

    ~2h

    Create Compose screens for adding/editing items that write immediately to Room.

  3. 03

    Implement background sync

    ~2.5h

    Use WorkManager to periodically push pending changes to a remote API when online.

  4. 04

    Handle sync conflicts

    ~2.5h

    Detect and resolve conflicting edits using version numbers, surfacing unresolved conflicts to the user.

  5. 05

    Test offline/online transitions

    ~1.5h

    Simulate connectivity loss and verify data integrity across app restarts.

Resources

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~10.5h · 5 steps

Tech stack

Jetpack ComposeRoomWorkManagerRetrofit