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我是 Flutter 的新手，使用 Block 进行状态管理。我有两个屏幕

  1. 注册画面
  2. 验证屏幕

在“RegistrationScreen”中，我添加了我的 BlockConsumer，如下所示

      child: Center(
        child: Column(
          children: [
            BlocConsumer<RegistrationCubit, RegistrationState>(
              builder: (context, state) {
                return state.maybeWhen(null,
                    setUpRegistration: () =>
                        createRegistrationForm(context),
                    orElse: () {
                      return createRegistrationForm(context);
                    });
              },
              listener: (context, state) {
                state.maybeWhen(null,
                    registrationInProgress: () => {
                          showLoader(true),
                        },
                    registrationResponseReceived: (response) =>
                        requestForOTPOnSuccess(context, response),
                    registrationFailedGeneric: () =>
                        registrationFailureGeneric(
                            context,
                            "Error in registration",
                            "Something went wrong"),
                    orElse: () {});
              },
            ),
          ],
        ),
      ),

一旦我们从服务中获得成功，我们就会从“RegistrationScreen”推送到“VerifyScreen”

在“VerifyScreen”中，我试图在 BlockListner 中重用 RegistrationCubit，如下所示（单击按钮再次调用注册服务）

        BlocListener<RegistrationCubit, RegistrationState>(
          listener: (context, st) {
            st.maybeWhen(null,
                registrationInProgress: () => {
                      showLoader(true),
                    },
                registrationResponseReceived: (_) => showGenericAlert(
                    context,
                    'My App',
                    'Code sent mobile number.'),
                registrationFailedGeneric: () => showGenericAlert(context,
                    'Error', 'An error occurred. Please try again later.'),
                orElse: () {});
          },
          child: Container(),
        )

但不是调用“VerifyScreen”BlocListener，而是调用“RegistrationScreen”侦听器。

您能否指导为什么从“VerifyScreen”调用“RegistrationScreen”侦听器？

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0 回答 0