Internation­alizing issue

[alefcarlos]

Hi !

After I added Localizations into my app(following this tutorial ) I got this issue when I interact with the Picker:

[VERBOSE-2:ui_dart_state.cc(148)] Unhandled Exception: NoSuchMethodError: The method 'call' was called on null.
Receiver: null
Tried calling: call()
#0      _rootRun  (dart:async/zone.dart:1120:38)
#1      _CustomZone.run  (dart:async/zone.dart:1021:19)
#2      _FutureListener.handleWhenComplete  (dart:async/future_impl.dart:150:18)
#3      Future._propagateToListeners.handleWhenCompleteCallback  (dart:async/future_impl.dart:609:39)
#4      Future._propagateToListeners  (dart:async/future_impl.dart:665:37)
#5      Future._completeWithValue  (dart:async/future_impl.dart:483:5)
#6      Future._asyncComplete.<anonymous closure>  (dart:async/future_impl.dart:513:7)
#7      _rootRun  (dart:async/zone.dart:1124:13)
#8      _CustomZone.run  (dart:async/zone.dart:1021:19)

Do I need to implement something else ?

My app supported languages:

MaterialApp(
          localizationsDelegates: [
            AppLocalizationsDelegate(),
            GlobalMaterialLocalizations.delegate,
            GlobalWidgetsLocalizations.delegate,
            GlobalCupertinoLocalizations.delegate,
          ],
          supportedLocales: [
            const Locale('pt', 'BR'),
            const Locale('en', 'US'),
          ],

My AppLocalization`s load method:

  static Future<AppLocalizations> load(Locale locale) async {
    final String name =
        (locale.countryCode != null && locale.countryCode.isEmpty)
            ? locale.languageCode
            : locale.toString();
    final String localeName = Intl.canonicalizedLocale(name);
    await initializeMessages(localeName);

    Intl.defaultLocale = localeName;
    return AppLocalizations();
  }

flutter doctor:

[✓] Flutter (Channel stable, v1.7.8+hotfix.4, on Mac OS X 10.14.6 18G87, locale pt-BR)
    • Flutter version 1.7.8+hotfix.4 at /Users/alefcarlos/development/flutter
    • Framework revision 20e59316b8 (5 weeks ago), 2019-07-18 20:04:33 -0700
    • Engine revision fee001c93f
    • Dart version 2.4.0

 
[✓] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
    • Android SDK at /Users/alefcarlos/Library/Android/sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-28, build-tools 28.0.3
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1248-b01)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 10.3)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 10.3, Build version 10G8
    • CocoaPods version 1.7.5

[✓] iOS tools - develop for iOS devices
    • ios-deploy 1.9.4

[✓] Android Studio (version 3.3)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin version 33.4.1
    • Dart plugin version 182.5215
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1248-b01)

[✓] VS Code (version 1.37.1)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.3.0

[✓] Connected device (1 available)
    • iPhone Xʀ • 5023658E-C713-4EC6-9792-56D738EBB720 • ios • com.apple.CoreSimulator.SimRuntime.iOS-12-4 (simulator)

• No issues found!

Thank you for this amazing plugin !

[alefcarlos]

this is related to #40

[alefcarlos]

The problem is in this line

My onClose property is null, but it is a required parameter for whenComplete method.

void _showDatePicker({
    @required BuildContext context,
    @required DateTime maxDate,
    @required DateTime initDate,
    @required Function(DateTime, List<int>) onConfirm,
    DateTime minDate,
  }) {
    DatePicker.showDatePicker(context,
        minDateTime: minDate ?? null,
        maxDateTime: maxDate,
        dateFormat: 'dd-MMMM-yyyy',
        initialDateTime: initDate,
        locale: DateTimePickerLocale.pt_br,
        onConfirm: onConfirm);
  }

Should I make a PR to solve this ?

[dwikresno]

i got same issue, can you fix it soon please, because I used this for production already, thanks

[dwikresno]

sorry, it's #solved, just give onClose(){}

[alefcarlos]

@dwikresno: But don't you agree that must be explicitly? I thing this parameter must be annoted with @required. I'm gonna make a PR with this fix.

[dylanwuzh]

Please upgrade to version: v1.0.12, the onClose is not required.

[dwikresno]

okay, thanks

[yehongxia]

加载 flutter_cupertino_date_picker并运行flutter run 时报Error: The superclass, 'Diagnosticable', has no unnamed constructor that takes no arguments. 这个与什么有关