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OpenFlutter / flutter_screenutil

Flutter screen adaptation, font adaptation, get screen information
https://pub.dartlang.org/packages/flutter_screenutil
Apache License 2.0
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flutter_screenutil 6.0.0-alpha.1 #574

Open vinhqn opened 3 months ago

vinhqn commented 3 months ago

My code: 

 return MultiProvider(
        providers: [
          ChangeNotifierProvider(create: (_) => UserProvider()),
          ChangeNotifierProvider(create: (_) => TabProvider()),
          // ChangeNotifierProvider(create: (_) => HomeProvider()),
        ],
        child: ScreenUtil(
            key: screenUtilKey,
            options: const ScreenUtilOptions(
              enable: true,
              designSize: Size(360, 690),
              fontFactorByWidth: 2.0,
              fontFactorByHeight: 1.0,
              flipSizeWhenLandscape: true,
            ),
            child: ChangeNotifierProvider(
                lazy: true,
                create: (context) => ThemeProvider(),
                builder: (context, child) {
                  final themeProvider = Provider.of<ThemeProvider>(context);
                  return KeyboardDismissOnTap(
                    child: MaterialApp(
                      navigatorKey: NavigatorService.navigatorKey,
                      localizationsDelegates: context.localizationDelegates,
                      supportedLocales: context.supportedLocales,
                      debugShowCheckedModeBanner: false,
                      locale: context.locale,
                      title: 'FidoBox',
                      // builder: (context, child) =>
                      //     PersistentKeyboardHeightProvider(child: child!),
                      home: SplashScreen(),
                      themeMode: themeProvider.themeMode,
                      theme: MyTheme().light,
                      darkTheme: MyTheme().dark,
                      onGenerateRoute: (settings) =>
                          NavigatorConfig.onGenerateRoute(settings),
                      initialRoute: NavigatorName.splash,
                    ),
                  );
                })));

                ══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
The following _TypeError was thrown building Consumer<TabProvider>(dirty, dependencies:
[_InheritedProviderScope<TabProvider?>]):
Null check operator used on a null value

The relevant error-causing widget was:
  Consumer<TabProvider>
  Consumer:file:///Users/macbook/fidobox/lib/screens/main_tab/main_bottom_bar.dart:232:14

When the exception was thrown, this was the stack:
#0      ScreenUtilSingleton.h (package:flutter_screenutil/src/widgets/screen_util_singleton.dart:44:50)
#1      ScreenUtilSingletonExtension.h (package:flutter_screenutil/src/utils/extensions.dart:27:39)
#2      _MainBottomBar.build.<anonymous closure>.<anonymous closure> (package:fidobox/screens/main_tab/main_bottom_bar.dart:237:46)
#3      Consumer.buildWithChild (package:provider/src/consumer.dart:179:19)
#4      SingleChildStatelessWidget.build (package:nested/nested.dart:259:41)
#5      StatelessElement.build (package:flutter/src/widgets/framework.dart:5557:49)
#6      SingleChildStatelessElement.build (package:nested/nested.dart:279:18)
#7      ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5487:15)
#8      Element.rebuild (package:flutter/src/widgets/framework.dart:5203:7)
#9      ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:5469:5)
#10     ComponentElement.mount (package:flutter/src/widgets/framework.dart:5463:5)
#11     SingleChildWidgetElementMixin.mount (package:nested/nested.dart:222:11)
...     Normal element mounting (32 frames)
#43     Element.inflateWidget (package:flutter/src/widgets/framework.dart:4340:16)
#44     MultiChildRenderObjectElement.inflateWidget (package:flutter/src/widgets/framework.dart:6904:36)
#45     MultiChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:6916:32)
...     Normal element mounting (7 frames)
#52     SingleChildWidgetElementMixin.mount (package:nested/nested.dart:222:11)
...     Normal element mounting (25 frames)
#77     Element.inflateWidget (package:flutter/src/widgets/framework.dart:4340:16)
#78     MultiChildRenderObjectElement.inflateWidget (package:flutter/src/widgets/framework.dart:6904:36)
#79     MultiChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:6916:32)
...     Normal element mounting (340 frames)
#419    Element.inflateWidget (package:flutter/src/widgets/framework.dart:4340:16)
#420    MultiChildRenderObjectElement.inflateWidget (package:flutter/src/widgets/framework.dart:6904:36)
#421    Element.updateChild (package:flutter/src/widgets/framework.dart:3849:18)
#422    Element.updateChildren (package:flutter/src/widgets/framework.dart:4036:32)
#423    MultiChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6929:17)
#424    Element.updateChild (package:flutter/src/widgets/framework.dart:3827:15)
#425    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5512:16)
#426    StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5650:11)
#427    Element.rebuild (package:flutter/src/widgets/framework.dart:5203:7)
#428    StatefulElement.update (package:flutter/src/widgets/framework.dart:5673:5)
#429    Element.updateChild (package:flutter/src/widgets/framework.dart:3827:15)
#430    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5512:16)
#431    Element.rebuild (package:flutter/src/widgets/framework.dart:5203:7)
#432    ProxyElement.update (package:flutter/src/widgets/framework.dart:5816:5)
#433    Element.updateChild (package:flutter/src/widgets/framework.dart:3827:15)
#434    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5512:16)
#435    Element.rebuild (package:flutter/src/widgets/framework.dart:5203:7)
#436    ProxyElement.update (package:flutter/src/widgets/framework.dart:5816:5)
#437    _InheritedNotifierElement.update (package:flutter/src/widgets/inherited_notifier.dart:105:11)
#438    Element.updateChild (package:flutter/src/widgets/framework.dart:3827:15)
#439    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5512:16)
#440    StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5650:11)
#441    Element.rebuild (package:flutter/src/widgets/framework.dart:5203:7)
#442    StatefulElement.update (package:flutter/src/widgets/framework.dart:5673:5)
#443    Element.updateChild (package:flutter/src/widgets/framework.dart:3827:15)
#444    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5512:16)
#445    Element.rebuild (package:flutter/src/widgets/framework.dart:5203:7)
#446    ProxyElement.update (package:flutter/src/widgets/framework.dart:5816:5)
#447    _InheritedNotifierElement.update (package:flutter/src/widgets/inherited_notifier.dart:105:11)
#448    Element.updateChild (package:flutter/src/widgets/framework.dart:3827:15)
#449    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5512:16)
#450    StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5650:11)
#451    Element.rebuild (package:flutter/src/widgets/framework.dart:5203:7)
#452    StatefulElement.update (package:flutter/src/widgets/framework.dart:5673:5)
#453    Element.updateChild (package:flutter/src/widgets/framework.dart:3827:15)
#454    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5512:16)
#455    StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5650:11)
#456    Element.rebuild (package:flutter/src/widgets/framework.dart:5203:7)
#457    StatefulElement.update (package:flutter/src/widgets/framework.dart:5673:5)
#458    Element.updateChild (package:flutter/src/widgets/framework.dart:3827:15)
#459    SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6776:14)
#460    Element.updateChild (package:flutter/src/widgets/framework.dart:3827:15)
#461    SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6776:14)
#462    Element.updateChild (package:flutter/src/widgets/framework.dart:3827:15)
#463    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5512:16)
#464    Element.rebuild (package:flutter/src/widgets/framework.dart:5203:7)
#465    ProxyElement.update (package:flutter/src/widgets/framework.dart:5816:5)
#466    Element.updateChild (package:flutter/src/widgets/framework.dart:3827:15)
#467    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5512:16)
#468    Element.rebuild (package:flutter/src/widgets/framework.dart:5203:7)
#469    ProxyElement.update (package:flutter/src/widgets/framework.dart:5816:5)
#470    Element.updateChild (package:flutter/src/widgets/framework.dart:3827:15)
#471    ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5512:16)
#472    StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5650:11)
#473    Element.rebuild (package:flutter/src/widgets/framework.dart:5203:7)
#474    BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2905:19)
#475    WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:1136:21)
#476    RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:443:5)
#477    SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1392:15)
#478    SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1313:9)
#479    SchedulerBinding.scheduleWarmUpFrame.<anonymous closure> (package:flutter/src/scheduler/binding.dart:1035:9)
#480    PlatformDispatcher.scheduleWarmUpFrame.<anonymous closure> (dart:ui/platform_dispatcher.dart:837:16)
#484    _RawReceivePort._handleMessage (dart:isolate-patch/isolate_patch.dart:184:12)
(elided 3 frames from class _Timer and dart:async-patch)

════════════════════════════════════════════════════════════════════════════════════════════════════
Mounir-Bouaiche commented 3 months ago

@vinhqn When using Singleton approach, wrap your tree with ScreenUtilSingleton widget instead of ScreenUtil widget

Ref: