flutter - Flutter BLoC 不断重建 CircularProgressIndicator

Question

我的 CircularProgressIndicator 被重建 2-3 次，即使状态没有多次发出，它也会使旋转动画每次都重新启动。

我的 BlocBuilder：

BlocBuilder<DayDetailedCubit, DayDetailedState>(
              builder: (context, state) {
                if (state is Loading) {
                  print("loading");
                  // return LoadingIndicator();
                  return CircularProgressIndicator();
                } else if (state is Loaded) {
                  return Expanded(
                    child: ListView(
                      children: [
                        SizedBox(
                          height: CustomPaddings.tabListSpacing * 0.6,
                        ),
                        MoodSection(moodEntries: state.dayDetailed.moodEntries),
                        StressSection(stressEntries: state.dayDetailed.stressEntries,),
                        SectionAchievement(achievementEntries: state.dayDetailed.achievementEntries,),
                        SizedBox(
                          height: CustomPaddings.tabListSpacing,
                        ),
                      ],
                    ),
                  );
                } else if (state is Initial) {
                  return Text("initial");
                } else if (state is Error) {
                  return Text("error");
                }
                return Text("unknown");
              },
            ),

我正在从我的 Cubit 发出 Loading 状态：

Future<void> getDayDetailed(Timestamp timestamp) async {
emit(Loading());
print("cubit: get day detailed");
final failureOrDayDetailed = await getDayDetailedEntries(timestamp);
failureOrDayDetailed.fold(
    (l) {
      print("error");
      emit(Error());
    }, (dayDetailed) => emit(Loaded(dayDetailed)));

}

最后 getDayDetailed 仅从此处的初始状态调用：

 @override
 void initState() {
  super.initState();
  BlocProvider.of<DayDetailedCubit>(context).getDayDetailed(widget.timestamp);
  }

据我所知，即使状态被多次发出，如果内容没有不同，Bloc 也不会重建，所以我不确定为什么我的 CircularProgressIndicator 被重建了几次。

标签： flutterdartblocflutter-bloc