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add ui-ux-pro-max skill for javafx design

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SerinaNya
2026-08-27 23:29:27 +08:00
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No,Category,Guideline,Description,Do,Don't,Code Good,Code Bad,Severity,Docs URL,Applies To,Status,Verified At
1,Widgets,Use StatelessWidget when possible,Immutable widgets are simpler,StatelessWidget for static UI,StatefulWidget for everything,class MyWidget extends StatelessWidget,class MyWidget extends StatefulWidget (static),Medium,https://api.flutter.dev/flutter/widgets/StatelessWidget-class.html,flutter 3.44.x (current stable line),active,2026-08-13
2,Widgets,Keep widgets small,Single responsibility principle,Extract widgets into smaller pieces,Large build methods,Column(children: [Header() Content()]),500+ line build method,Medium,,flutter 3.44.x (current stable line),active,2026-08-13
3,Widgets,Use const constructors,Compile-time constants for performance,const MyWidget() when possible,Non-const for static widgets,const Text('Hello'),Text('Hello') for literals,High,https://docs.flutter.dev/perf/best-practices#control-build-cost,flutter 3.44.x (current stable line),active,2026-08-13
4,Widgets,Prefer composition over inheritance,Combine widgets using children,Compose widgets,Extend widget classes,Container(child: MyContent()),class MyContainer extends Container,Medium,,flutter 3.44.x (current stable line),active,2026-08-13
5,State,Use setState correctly,Minimal state in StatefulWidget,setState for UI state changes,setState for business logic,setState(() { _counter++; }),Complex logic in setState,Medium,https://api.flutter.dev/flutter/widgets/State/setState.html,flutter 3.44.x (current stable line),active,2026-08-13
6,State,Avoid setState in build,Never call setState during build,setState in callbacks only,setState in build method,onPressed: () => setState(() {}),build() { setState(); },High,https://api.flutter.dev/flutter/widgets/State/setState.html,flutter 3.44.x (current stable line),active,2026-08-13
7,State,Use state management for complex apps,Provider Riverpod BLoC,State management for shared state,setState for global state,Provider.of<MyState>(context),Global setState calls,Medium,,flutter 3.44.x (current stable line),active,2026-08-13
8,State,Prefer Riverpod or Provider,Recommended state solutions,Riverpod for new projects,InheritedWidget manually,ref.watch(myProvider),Custom InheritedWidget,Medium,https://riverpod.dev/,flutter 3.44.x (current stable line),active,2026-08-13
9,State,Dispose resources,Clean up controllers and subscriptions,dispose() for cleanup,Memory leaks from subscriptions,@override void dispose() { controller.dispose(); },No dispose implementation,High,https://api.flutter.dev/flutter/widgets/State/dispose.html,flutter 3.44.x (current stable line),active,2026-08-13
10,Layout,Use Column and Row,Basic layout widgets,Column Row for linear layouts,Stack for simple layouts,"Column(children: [Text(), Button()])",Stack for vertical list,Medium,https://api.flutter.dev/flutter/widgets/Column-class.html,flutter 3.44.x (current stable line),active,2026-08-13
11,Layout,Use Expanded and Flexible,Control flex behavior,Expanded to fill space,Fixed sizes in flex containers,Expanded(child: Container()),Container(width: 200) in Row,Medium,,flutter 3.44.x (current stable line),active,2026-08-13
12,Layout,Use SizedBox for spacing,Consistent spacing,SizedBox for gaps,Container for spacing only,SizedBox(height: 16),Container(height: 16),Low,,flutter 3.44.x (current stable line),active,2026-08-13
13,Layout,Use LayoutBuilder for responsive,Respond to constraints,LayoutBuilder for adaptive layouts,Fixed sizes for responsive,LayoutBuilder(builder: (context constraints) {}),Container(width: 375),Medium,https://api.flutter.dev/flutter/widgets/LayoutBuilder-class.html,flutter 3.44.x (current stable line),active,2026-08-13
14,Layout,Avoid deep nesting,Keep widget tree shallow,Extract deeply nested widgets,10+ levels of nesting,Extract widget to method or class,Column(Row(Column(Row(...)))),Medium,,flutter 3.44.x (current stable line),active,2026-08-13
15,Lists,Use ListView.builder,Lazy list building,ListView.builder for long lists,ListView with children for large lists,"ListView.builder(itemCount: 100, itemBuilder: ...)",ListView(children: items.map(...).toList()),High,https://api.flutter.dev/flutter/widgets/ListView-class.html,flutter 3.44.x (current stable line),active,2026-08-13
16,Lists,Provide itemExtent when known,Skip measurement,itemExtent for fixed height items,No itemExtent for uniform lists,ListView.builder(itemExtent: 50),ListView.builder without itemExtent,Medium,,flutter 3.44.x (current stable line),active,2026-08-13
17,Lists,Use keys for stateful items,Preserve widget state,Key for stateful list items,No key for dynamic lists,ListTile(key: ValueKey(item.id)),ListTile without key,High,https://api.flutter.dev/flutter/foundation/ValueKey-class.html,flutter 3.44.x (current stable line),active,2026-08-13
18,Lists,Use SliverList for custom scroll,Custom scroll effects,CustomScrollView with Slivers,Nested ListViews,CustomScrollView(slivers: [SliverList()]),ListView inside ListView,Medium,https://api.flutter.dev/flutter/widgets/SliverList-class.html,flutter 3.44.x (current stable line),active,2026-08-13
19,Navigation,Use Navigator 2.0 or GoRouter,Declarative routing,go_router for navigation,Navigator.push for complex apps,GoRouter(routes: [...]),Navigator.push everywhere,Medium,https://pub.dev/packages/go_router,flutter 3.44.x (current stable line),active,2026-08-13
20,Navigation,Use named routes,Organized navigation,Named routes for clarity,Anonymous routes,Navigator.pushNamed(context '/home'),Navigator.push(context MaterialPageRoute()),Low,,flutter 3.44.x (current stable line),active,2026-08-13
21,Navigation,Handle back button with PopScope,Android back behavior and predictive back (Android 14+),Use PopScope with onPopInvokedWithResult,Use WillPopScope,"PopScope(canPop: canPop, onPopInvokedWithResult: (didPop, result) { ... })",WillPopScope(onWillPop: ...),High,https://api.flutter.dev/flutter/widgets/PopScope-class.html,flutter 3.44.x (current stable line),active,2026-08-13
22,Navigation,Pass typed arguments,Type-safe route arguments,Typed route arguments,Dynamic arguments,MyRoute(id: '123'),arguments: {'id': '123'},Medium,,flutter 3.44.x (current stable line),active,2026-08-13
23,Async,Use FutureBuilder,Async UI building,FutureBuilder for async data,setState for async,FutureBuilder(future: fetchData()),fetchData().then((d) => setState()),Medium,https://api.flutter.dev/flutter/widgets/FutureBuilder-class.html,flutter 3.44.x (current stable line),active,2026-08-13
24,Async,Use StreamBuilder,Stream UI building,StreamBuilder for streams,Manual stream subscription,StreamBuilder(stream: myStream),stream.listen in initState,Medium,https://api.flutter.dev/flutter/widgets/StreamBuilder-class.html,flutter 3.44.x (current stable line),active,2026-08-13
25,Async,Handle loading and error states,Complete async UI states,ConnectionState checks,Only success state,if (snapshot.connectionState == ConnectionState.waiting),No loading indicator,High,https://api.flutter.dev/flutter/widgets/FutureBuilder-class.html,flutter 3.44.x (current stable line),active,2026-08-13
26,Async,Cancel subscriptions,Clean up stream subscriptions,Cancel in dispose,Memory leaks,subscription.cancel() in dispose,No subscription cleanup,High,https://api.flutter.dev/flutter/dart-async/StreamSubscription/cancel.html,flutter 3.44.x (current stable line),active,2026-08-13
27,Theming,Use ThemeData,Consistent theming,ThemeData for app theme,Hardcoded colors,Theme.of(context).primaryColor,Color(0xFF123456) everywhere,Medium,https://api.flutter.dev/flutter/material/ThemeData-class.html,flutter 3.44.x (current stable line),active,2026-08-13
28,Theming,Use ColorScheme,Material 3 color system,ColorScheme for colors,Individual color properties,colorScheme: ColorScheme.fromSeed(),primaryColor: Colors.blue,Medium,,flutter 3.44.x (current stable line),active,2026-08-13
29,Theming,Access theme via context,Dynamic theme access,Theme.of(context),Static theme reference,Theme.of(context).textTheme.bodyLarge,TextStyle(fontSize: 16),Medium,,flutter 3.44.x (current stable line),active,2026-08-13
30,Theming,Support dark mode,Respect system theme,darkTheme in MaterialApp,Light theme only,"MaterialApp(theme: light, darkTheme: dark)",MaterialApp(theme: light),Medium,,flutter 3.44.x (current stable line),active,2026-08-13
31,Animation,Use implicit animations,Simple animations,AnimatedContainer AnimatedOpacity,Explicit for simple transitions,AnimatedContainer(duration: Duration()),AnimationController for fade,Low,https://api.flutter.dev/flutter/widgets/AnimatedContainer-class.html,flutter 3.44.x (current stable line),active,2026-08-13
32,Animation,Use AnimationController for complex,Fine-grained control,AnimationController with Ticker,Implicit for complex sequences,AnimationController(vsync: this),AnimatedContainer for staggered,Medium,,flutter 3.44.x (current stable line),active,2026-08-13
33,Animation,Dispose AnimationControllers,Clean up animation resources,dispose() for controllers,Memory leaks,controller.dispose() in dispose,No controller disposal,High,https://api.flutter.dev/flutter/animation/AnimationController/dispose.html,flutter 3.44.x (current stable line),active,2026-08-13
34,Animation,Use Hero for transitions,Shared element transitions,Hero for navigation animations,Manual shared element,Hero(tag: 'image' child: Image()),Custom shared element animation,Low,https://api.flutter.dev/flutter/widgets/Hero-class.html,flutter 3.44.x (current stable line),active,2026-08-13
35,Forms,Use Form widget,Form validation,Form with GlobalKey,Individual validation,Form(key: _formKey child: ...),TextField without Form,Medium,https://api.flutter.dev/flutter/widgets/Form-class.html,flutter 3.44.x (current stable line),active,2026-08-13
36,Forms,Use TextEditingController,Control text input,Controller for text fields,onChanged for all text,final controller = TextEditingController(),onChanged: (v) => setState(),Medium,,flutter 3.44.x (current stable line),active,2026-08-13
37,Forms,Validate on submit,Form validation flow,_formKey.currentState!.validate(),Skip validation,if (_formKey.currentState!.validate()),Submit without validation,High,https://api.flutter.dev/flutter/widgets/FormState/validate.html,flutter 3.44.x (current stable line),active,2026-08-13
38,Forms,Dispose controllers,Clean up text controllers,dispose() for controllers,Memory leaks,controller.dispose() in dispose,No controller disposal,High,https://api.flutter.dev/flutter/widgets/TextEditingController-class.html,flutter 3.44.x (current stable line),active,2026-08-13
39,Performance,Use const widgets,Reduce rebuilds,const for static widgets,No const for literals,const Icon(Icons.add),Icon(Icons.add),High,https://docs.flutter.dev/perf/best-practices#control-build-cost,flutter 3.44.x (current stable line),active,2026-08-13
40,Performance,Avoid rebuilding entire tree,Minimal rebuild scope,Isolate changing widgets,setState on parent,Consumer only around changing widget,setState on root widget,High,https://docs.flutter.dev/perf/best-practices#control-build-cost,flutter 3.44.x (current stable line),active,2026-08-13
41,Performance,Use RepaintBoundary,Isolate repaints,RepaintBoundary for animations,Full screen repaints,RepaintBoundary(child: AnimatedWidget()),Animation without boundary,Medium,https://api.flutter.dev/flutter/widgets/RepaintBoundary-class.html,flutter 3.44.x (current stable line),active,2026-08-13
42,Performance,Profile with DevTools,Measure before optimizing,Flutter DevTools profiling,Guess at performance,DevTools performance tab,Optimize without measuring,Medium,https://docs.flutter.dev/tools/devtools,flutter 3.44.x (current stable line),active,2026-08-13
43,Accessibility,Use Semantics widget,Screen reader support,Semantics for accessibility,Missing accessibility info,Semantics(label: 'Submit button'),GestureDetector without semantics,High,https://api.flutter.dev/flutter/widgets/Semantics-class.html,flutter 3.44.x (current stable line),active,2026-08-13
44,Accessibility,Support large fonts,Use TextScaler for nonlinear text scaling,Use MediaQuery.textScalerOf(context),Fixed font sizes,final scaler = MediaQuery.textScalerOf(context); scaler.scale(14),MediaQuery.textScaleFactor,High,https://api.flutter.dev/flutter/widgets/MediaQuery/textScalerOf.html,flutter 3.44.x (current stable line),active,2026-08-13
45,Accessibility,Test with screen readers,TalkBack and VoiceOver,Test accessibility regularly,Skip accessibility testing,Regular TalkBack testing,No screen reader testing,High,https://docs.flutter.dev/ui/accessibility-and-internationalization/accessibility#screen-readers,flutter 3.44.x (current stable line),active,2026-08-13
46,Testing,Use widget tests,Test widget behavior,WidgetTester for UI tests,Unit tests only,testWidgets('...' (tester) async {}),Only test() for UI,Medium,https://docs.flutter.dev/testing,flutter 3.44.x (current stable line),active,2026-08-13
47,Testing,Use integration tests,Full app testing,integration_test package,Manual testing only,IntegrationTestWidgetsFlutterBinding,Manual E2E testing,Medium,,flutter 3.44.x (current stable line),active,2026-08-13
48,Testing,Mock dependencies,Isolate tests,Mockito or mocktail,Real dependencies in tests,when(mock.method()).thenReturn(),Real API calls in tests,Medium,,flutter 3.44.x (current stable line),active,2026-08-13
49,Platform,Use Platform checks,Platform-specific code,Platform.isIOS Platform.isAndroid,Same code for all platforms,if (Platform.isIOS) {},Hardcoded iOS behavior,Medium,,flutter 3.44.x (current stable line),active,2026-08-13
50,Platform,Use kIsWeb for web,Web platform detection,kIsWeb for web checks,Platform for web,if (kIsWeb) {},Platform.isWeb (doesn't exist),Medium,,flutter 3.44.x (current stable line),active,2026-08-13
51,Packages,Use pub.dev packages,Community packages,Popular maintained packages,Custom implementations,cached_network_image,Custom image cache,Medium,https://pub.dev/,flutter 3.44.x (current stable line),active,2026-08-13
52,Packages,Check package quality,Quality before adding,Pub points and popularity,Any package without review,100+ pub points,Unmaintained packages,Medium,,flutter 3.44.x (current stable line),active,2026-08-13
1 No Category Guideline Description Do Don't Code Good Code Bad Severity Docs URL Applies To Status Verified At
2 1 Widgets Use StatelessWidget when possible Immutable widgets are simpler StatelessWidget for static UI StatefulWidget for everything class MyWidget extends StatelessWidget class MyWidget extends StatefulWidget (static) Medium https://api.flutter.dev/flutter/widgets/StatelessWidget-class.html flutter 3.44.x (current stable line) active 2026-08-13
3 2 Widgets Keep widgets small Single responsibility principle Extract widgets into smaller pieces Large build methods Column(children: [Header() Content()]) 500+ line build method Medium flutter 3.44.x (current stable line) active 2026-08-13
4 3 Widgets Use const constructors Compile-time constants for performance const MyWidget() when possible Non-const for static widgets const Text('Hello') Text('Hello') for literals High https://docs.flutter.dev/perf/best-practices#control-build-cost flutter 3.44.x (current stable line) active 2026-08-13
5 4 Widgets Prefer composition over inheritance Combine widgets using children Compose widgets Extend widget classes Container(child: MyContent()) class MyContainer extends Container Medium flutter 3.44.x (current stable line) active 2026-08-13
6 5 State Use setState correctly Minimal state in StatefulWidget setState for UI state changes setState for business logic setState(() { _counter++; }) Complex logic in setState Medium https://api.flutter.dev/flutter/widgets/State/setState.html flutter 3.44.x (current stable line) active 2026-08-13
7 6 State Avoid setState in build Never call setState during build setState in callbacks only setState in build method onPressed: () => setState(() {}) build() { setState(); } High https://api.flutter.dev/flutter/widgets/State/setState.html flutter 3.44.x (current stable line) active 2026-08-13
8 7 State Use state management for complex apps Provider Riverpod BLoC State management for shared state setState for global state Provider.of<MyState>(context) Global setState calls Medium flutter 3.44.x (current stable line) active 2026-08-13
9 8 State Prefer Riverpod or Provider Recommended state solutions Riverpod for new projects InheritedWidget manually ref.watch(myProvider) Custom InheritedWidget Medium https://riverpod.dev/ flutter 3.44.x (current stable line) active 2026-08-13
10 9 State Dispose resources Clean up controllers and subscriptions dispose() for cleanup Memory leaks from subscriptions @override void dispose() { controller.dispose(); } No dispose implementation High https://api.flutter.dev/flutter/widgets/State/dispose.html flutter 3.44.x (current stable line) active 2026-08-13
11 10 Layout Use Column and Row Basic layout widgets Column Row for linear layouts Stack for simple layouts Column(children: [Text(), Button()]) Stack for vertical list Medium https://api.flutter.dev/flutter/widgets/Column-class.html flutter 3.44.x (current stable line) active 2026-08-13
12 11 Layout Use Expanded and Flexible Control flex behavior Expanded to fill space Fixed sizes in flex containers Expanded(child: Container()) Container(width: 200) in Row Medium flutter 3.44.x (current stable line) active 2026-08-13
13 12 Layout Use SizedBox for spacing Consistent spacing SizedBox for gaps Container for spacing only SizedBox(height: 16) Container(height: 16) Low flutter 3.44.x (current stable line) active 2026-08-13
14 13 Layout Use LayoutBuilder for responsive Respond to constraints LayoutBuilder for adaptive layouts Fixed sizes for responsive LayoutBuilder(builder: (context constraints) {}) Container(width: 375) Medium https://api.flutter.dev/flutter/widgets/LayoutBuilder-class.html flutter 3.44.x (current stable line) active 2026-08-13
15 14 Layout Avoid deep nesting Keep widget tree shallow Extract deeply nested widgets 10+ levels of nesting Extract widget to method or class Column(Row(Column(Row(...)))) Medium flutter 3.44.x (current stable line) active 2026-08-13
16 15 Lists Use ListView.builder Lazy list building ListView.builder for long lists ListView with children for large lists ListView.builder(itemCount: 100, itemBuilder: ...) ListView(children: items.map(...).toList()) High https://api.flutter.dev/flutter/widgets/ListView-class.html flutter 3.44.x (current stable line) active 2026-08-13
17 16 Lists Provide itemExtent when known Skip measurement itemExtent for fixed height items No itemExtent for uniform lists ListView.builder(itemExtent: 50) ListView.builder without itemExtent Medium flutter 3.44.x (current stable line) active 2026-08-13
18 17 Lists Use keys for stateful items Preserve widget state Key for stateful list items No key for dynamic lists ListTile(key: ValueKey(item.id)) ListTile without key High https://api.flutter.dev/flutter/foundation/ValueKey-class.html flutter 3.44.x (current stable line) active 2026-08-13
19 18 Lists Use SliverList for custom scroll Custom scroll effects CustomScrollView with Slivers Nested ListViews CustomScrollView(slivers: [SliverList()]) ListView inside ListView Medium https://api.flutter.dev/flutter/widgets/SliverList-class.html flutter 3.44.x (current stable line) active 2026-08-13
20 19 Navigation Use Navigator 2.0 or GoRouter Declarative routing go_router for navigation Navigator.push for complex apps GoRouter(routes: [...]) Navigator.push everywhere Medium https://pub.dev/packages/go_router flutter 3.44.x (current stable line) active 2026-08-13
21 20 Navigation Use named routes Organized navigation Named routes for clarity Anonymous routes Navigator.pushNamed(context '/home') Navigator.push(context MaterialPageRoute()) Low flutter 3.44.x (current stable line) active 2026-08-13
22 21 Navigation Handle back button with PopScope Android back behavior and predictive back (Android 14+) Use PopScope with onPopInvokedWithResult Use WillPopScope PopScope(canPop: canPop, onPopInvokedWithResult: (didPop, result) { ... }) WillPopScope(onWillPop: ...) High https://api.flutter.dev/flutter/widgets/PopScope-class.html flutter 3.44.x (current stable line) active 2026-08-13
23 22 Navigation Pass typed arguments Type-safe route arguments Typed route arguments Dynamic arguments MyRoute(id: '123') arguments: {'id': '123'} Medium flutter 3.44.x (current stable line) active 2026-08-13
24 23 Async Use FutureBuilder Async UI building FutureBuilder for async data setState for async FutureBuilder(future: fetchData()) fetchData().then((d) => setState()) Medium https://api.flutter.dev/flutter/widgets/FutureBuilder-class.html flutter 3.44.x (current stable line) active 2026-08-13
25 24 Async Use StreamBuilder Stream UI building StreamBuilder for streams Manual stream subscription StreamBuilder(stream: myStream) stream.listen in initState Medium https://api.flutter.dev/flutter/widgets/StreamBuilder-class.html flutter 3.44.x (current stable line) active 2026-08-13
26 25 Async Handle loading and error states Complete async UI states ConnectionState checks Only success state if (snapshot.connectionState == ConnectionState.waiting) No loading indicator High https://api.flutter.dev/flutter/widgets/FutureBuilder-class.html flutter 3.44.x (current stable line) active 2026-08-13
27 26 Async Cancel subscriptions Clean up stream subscriptions Cancel in dispose Memory leaks subscription.cancel() in dispose No subscription cleanup High https://api.flutter.dev/flutter/dart-async/StreamSubscription/cancel.html flutter 3.44.x (current stable line) active 2026-08-13
28 27 Theming Use ThemeData Consistent theming ThemeData for app theme Hardcoded colors Theme.of(context).primaryColor Color(0xFF123456) everywhere Medium https://api.flutter.dev/flutter/material/ThemeData-class.html flutter 3.44.x (current stable line) active 2026-08-13
29 28 Theming Use ColorScheme Material 3 color system ColorScheme for colors Individual color properties colorScheme: ColorScheme.fromSeed() primaryColor: Colors.blue Medium flutter 3.44.x (current stable line) active 2026-08-13
30 29 Theming Access theme via context Dynamic theme access Theme.of(context) Static theme reference Theme.of(context).textTheme.bodyLarge TextStyle(fontSize: 16) Medium flutter 3.44.x (current stable line) active 2026-08-13
31 30 Theming Support dark mode Respect system theme darkTheme in MaterialApp Light theme only MaterialApp(theme: light, darkTheme: dark) MaterialApp(theme: light) Medium flutter 3.44.x (current stable line) active 2026-08-13
32 31 Animation Use implicit animations Simple animations AnimatedContainer AnimatedOpacity Explicit for simple transitions AnimatedContainer(duration: Duration()) AnimationController for fade Low https://api.flutter.dev/flutter/widgets/AnimatedContainer-class.html flutter 3.44.x (current stable line) active 2026-08-13
33 32 Animation Use AnimationController for complex Fine-grained control AnimationController with Ticker Implicit for complex sequences AnimationController(vsync: this) AnimatedContainer for staggered Medium flutter 3.44.x (current stable line) active 2026-08-13
34 33 Animation Dispose AnimationControllers Clean up animation resources dispose() for controllers Memory leaks controller.dispose() in dispose No controller disposal High https://api.flutter.dev/flutter/animation/AnimationController/dispose.html flutter 3.44.x (current stable line) active 2026-08-13
35 34 Animation Use Hero for transitions Shared element transitions Hero for navigation animations Manual shared element Hero(tag: 'image' child: Image()) Custom shared element animation Low https://api.flutter.dev/flutter/widgets/Hero-class.html flutter 3.44.x (current stable line) active 2026-08-13
36 35 Forms Use Form widget Form validation Form with GlobalKey Individual validation Form(key: _formKey child: ...) TextField without Form Medium https://api.flutter.dev/flutter/widgets/Form-class.html flutter 3.44.x (current stable line) active 2026-08-13
37 36 Forms Use TextEditingController Control text input Controller for text fields onChanged for all text final controller = TextEditingController() onChanged: (v) => setState() Medium flutter 3.44.x (current stable line) active 2026-08-13
38 37 Forms Validate on submit Form validation flow _formKey.currentState!.validate() Skip validation if (_formKey.currentState!.validate()) Submit without validation High https://api.flutter.dev/flutter/widgets/FormState/validate.html flutter 3.44.x (current stable line) active 2026-08-13
39 38 Forms Dispose controllers Clean up text controllers dispose() for controllers Memory leaks controller.dispose() in dispose No controller disposal High https://api.flutter.dev/flutter/widgets/TextEditingController-class.html flutter 3.44.x (current stable line) active 2026-08-13
40 39 Performance Use const widgets Reduce rebuilds const for static widgets No const for literals const Icon(Icons.add) Icon(Icons.add) High https://docs.flutter.dev/perf/best-practices#control-build-cost flutter 3.44.x (current stable line) active 2026-08-13
41 40 Performance Avoid rebuilding entire tree Minimal rebuild scope Isolate changing widgets setState on parent Consumer only around changing widget setState on root widget High https://docs.flutter.dev/perf/best-practices#control-build-cost flutter 3.44.x (current stable line) active 2026-08-13
42 41 Performance Use RepaintBoundary Isolate repaints RepaintBoundary for animations Full screen repaints RepaintBoundary(child: AnimatedWidget()) Animation without boundary Medium https://api.flutter.dev/flutter/widgets/RepaintBoundary-class.html flutter 3.44.x (current stable line) active 2026-08-13
43 42 Performance Profile with DevTools Measure before optimizing Flutter DevTools profiling Guess at performance DevTools performance tab Optimize without measuring Medium https://docs.flutter.dev/tools/devtools flutter 3.44.x (current stable line) active 2026-08-13
44 43 Accessibility Use Semantics widget Screen reader support Semantics for accessibility Missing accessibility info Semantics(label: 'Submit button') GestureDetector without semantics High https://api.flutter.dev/flutter/widgets/Semantics-class.html flutter 3.44.x (current stable line) active 2026-08-13
45 44 Accessibility Support large fonts Use TextScaler for nonlinear text scaling Use MediaQuery.textScalerOf(context) Fixed font sizes final scaler = MediaQuery.textScalerOf(context); scaler.scale(14) MediaQuery.textScaleFactor High https://api.flutter.dev/flutter/widgets/MediaQuery/textScalerOf.html flutter 3.44.x (current stable line) active 2026-08-13
46 45 Accessibility Test with screen readers TalkBack and VoiceOver Test accessibility regularly Skip accessibility testing Regular TalkBack testing No screen reader testing High https://docs.flutter.dev/ui/accessibility-and-internationalization/accessibility#screen-readers flutter 3.44.x (current stable line) active 2026-08-13
47 46 Testing Use widget tests Test widget behavior WidgetTester for UI tests Unit tests only testWidgets('...' (tester) async {}) Only test() for UI Medium https://docs.flutter.dev/testing flutter 3.44.x (current stable line) active 2026-08-13
48 47 Testing Use integration tests Full app testing integration_test package Manual testing only IntegrationTestWidgetsFlutterBinding Manual E2E testing Medium flutter 3.44.x (current stable line) active 2026-08-13
49 48 Testing Mock dependencies Isolate tests Mockito or mocktail Real dependencies in tests when(mock.method()).thenReturn() Real API calls in tests Medium flutter 3.44.x (current stable line) active 2026-08-13
50 49 Platform Use Platform checks Platform-specific code Platform.isIOS Platform.isAndroid Same code for all platforms if (Platform.isIOS) {} Hardcoded iOS behavior Medium flutter 3.44.x (current stable line) active 2026-08-13
51 50 Platform Use kIsWeb for web Web platform detection kIsWeb for web checks Platform for web if (kIsWeb) {} Platform.isWeb (doesn't exist) Medium flutter 3.44.x (current stable line) active 2026-08-13
52 51 Packages Use pub.dev packages Community packages Popular maintained packages Custom implementations cached_network_image Custom image cache Medium https://pub.dev/ flutter 3.44.x (current stable line) active 2026-08-13
53 52 Packages Check package quality Quality before adding Pub points and popularity Any package without review 100+ pub points Unmaintained packages Medium flutter 3.44.x (current stable line) active 2026-08-13