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7-Day Android App Development Interview Preparation Plan

Your saved questions plus a day-by-day plan. Add questions with Save to → 7-Day Job Prep on any question page.

Day-by-day plan

Day 1Kotlin core
  • Revise null safety, data and sealed classes, and scope functions
  • Solve 5 collection problems with map, filter and groupBy
  • Write answers to 10 Kotlin concept questions aloud
Day 2Coroutines and Flow
  • Revise dispatchers, structured concurrency and cancellation
  • Code a debounced search with flatMapLatest and stateIn
  • Practise explaining StateFlow versus SharedFlow with examples
Day 3Android components
  • Draw the Activity and Fragment lifecycles from memory
  • Revise process death, permissions and background limits
  • Test your app with Don't keep activities turned on
Day 4Jetpack Compose
  • Build a list and detail screen with hoisted state in under an hour
  • Revise recomposition, side effects and stability
  • Write one Compose UI test for your screen
Day 5Architecture and data
  • Explain MVVM layers and single source of truth with a diagram
  • Revise Hilt modules, Room DAOs and migrations
  • Prepare an offline-first design answer for a notes or cart app
Day 6Networking, performance and release
  • Revise Retrofit, interceptors and token refresh
  • Revise ANRs, memory leaks, R8 and Baseline Profiles
  • List Play Store release steps and staged rollout
Day 7Mock interview and projects
  • Do a timed mock interview with a friend or mentor
  • Prepare 4 STAR stories: bug, conflict, ownership, learning
  • Polish GitHub READMEs and be ready to walk through your best project

Frequently asked questions

Can I prepare for a Android App Development interview in 7 days?

Seven days is enough to revise and sharpen, not to learn from zero. Use the plan to cover each core topic once, practise questions daily and finish with a mock interview.

How do I add questions to the plan?

On any question page choose Save to → 7-Day Job Prep. Saved questions show up at the top of this page.

How many hours a day should I study?

Two to four focused hours a day works for most people: one hour of revision, one to two hours of questions, and the rest on projects or mock answers.