To help you troubleshoot the issue with the search function and UI update in your Flutter app using the Bloc state management, let’s go through a few steps. We will start by reviewing your code structure and the common pitfalls when using copyWith in Bloc. Steps to Diagnose and Fix the Issue: Example Implementation Here’s…
Category: BLoC & Cubit
Flutter Sign-In Page: Using Bloc with StatefulWidget vs StatelessWidget
In a Flutter application, the choice between using a StatefulWidget and a StatelessWidget often depends on how you manage the state and the specific requirements of your user interface. When using the Bloc pattern for state management, you might wonder why a StatefulWidget is still necessary if Bloc is handling the state. Here’s an explanation:…
Understanding Flutter BLoC: How to Trigger Events on Page Load in Stateless Widgets
Introduction Flutter is a powerful framework for building cross-platform applications, and the BLoC (Business Logic Component) pattern is a popular state management solution in the Flutter ecosystem. One common challenge is triggering an event when a stateless widget is first built. This article will provide a clear, step-by-step example of how to accomplish this using…
Make sure wait until build context is ready
To ensure that you only execute certain code when the build context is fully ready, you can make use of the WidgetsBinding.instance.addPostFrameCallback method. This method schedules a callback that will be executed after the current frame is drawn, ensuring that the build context is fully initialized and mounted. Here’s an example of how you can…
Flutter PopScope Context and BackButton
Here we will see how to use PopScope context and backbutton. Here you have bloc or provider, you can access them from PopScope. We need to use the onPopInvoked callback function. Within this function we can call our or use our context. So with this you can use context to go back based on your…
flutter: Unhandled Exception: Bad state: Cannot add new events after calling close
Error if you work with bloc. flutter: Unhandled Exception: Bad state: Cannot add new events after calling close The reason is framework is trying to add events after dispose() method being called. When the dispose() is called you can not call or add events for the bloc. Make sure you are not calling dispose() method…
Is Riverpod overrated? Is it difficult?
Yes, it’s overrated and difficult for beginners. Now, I am not saying this because I love other state management package or hate Riverpod. It causes problem and impossible to keep track of the error once you use Notifier Provider and AsyncNotifier Provider together. Riverpod does come with it’s benefit. Like AsyncLoading, AsyncData, AsyncValue. These are…
BlocProvider inside a List inject Blocs
Can you use BlocProvider inside a list? yes, you can. You can inject your bloc inside a list using BlocProvider. Here we have buildPage() widget, and it returns a screen or a widget based on the given parameter index. Inside the list you can see that we have two BlocProviders injecting blocs like SearchBlocs and…
Get_it dependency injection | BLoC | Cubit
How to inject dependency with Get_it if your dependencies are made of BLoC and Cubit? First you need to create the related BLoC or Cubit for your app and you also have the use cases ready for them. After that you need to create an instance of get_it and create a function called init(). Inside…
Do not use BuildContext across async gaps
You may see this if you BLoC or Riverpod or just context passing if you try to manage the states of your app. Actually it’s try to say that, you are using context in your function and you are using in between await keyword. See the last line, there’s wiggly line. If you hover over…