Build Performance, DevTools & Release in feature slices and verify it with unit, widget, and integration tests. Use measurable acceptance criteria for build modes, frame time, rebuild count, accessibility, and deployment configuration.
Build a Complete Mental Model
Build Performance, DevTools & Release in feature slices and verify it with unit, widget, and integration tests. Use measurable acceptance criteria for build modes, frame time, rebuild count, accessibility, and deployment configuration.
Apply It in Production Flutter
Run and test an original Performance, DevTools & Release example with small and large screens, text scaling, empty/loading/error states, rapid interaction, navigation restoration, and disposal cases. Use flutter analyze, widget tests, and profile mode where relevant.
After This Lesson
flutter analyze
flutter test
flutter run --profile
flutter build appbundle --release
flutter build ios --release
flutter build web --releaseAnalyzed, tested, profiled, release-ready platform buildsTry It Yourself
Run and test an original Performance, DevTools & Release example with small and large screens, text scaling, empty/loading/error states, rapid interaction, navigation restoration, and disposal cases. Use flutter analyze, widget tests, and profile mode where relevant.
Lifecycle and Performance Warning
Assuming one screen's sample output proves every rebuild, overflow, accessibility, async, and lifecycle path.
Performance best practices — Flutter